The percentage composition of magnesium hydroxide in the substance (Mg(OH)2) is 41.67%.
Magnesium hydroxide (Mg(OH)2) is of one magnesium (Mg) atom and two hydroxides (OH) ions.
The atomic mass of Mg = 24.31 g/mol
the atomic mass of O and H = 15.99 g/mol & 1.01 g/mol
The molecular weight of Mg(OH)2 is:
Mg(OH)2 = (24.31 g/mol) + 2(15.99 g/mol + 1.01 g/mol)
= 58.32 g/mol
To calculate percentage composition, we need to calculate the mass of magnesium in one molecule of (Mg(OH)2)
Mass of Mg = 24.31 g/mol
The percentage composition of magnesium in Mg(OH)2 is:
(24.31 g/mol / 58.32 g/mol) x 100% ≈ 41.67%
Therefore, the percentage composition of magnesium in Mg(OH)2 is approximately 41.67%.
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6. After intravenous administration of aspartate with N' radioactive marker to experimental animals, the labeled nitrogen is revealed in nucleic acids ofdifferent tissues and organs. What atoms ni purine and pyrimidine bases will include the marker nitrogen? To answer the question, present the schemes of nucleotides synthesis. Indicate the label N ISin these schemes.
In the synthesis of nucleotides, the nitrogenous bases of purines and pyrimidines are synthesized separately and then attached to the sugar-phosphate backbone of the nucleotide.
What is synthesis ?
Synthesis refers to the process of combining simpler components or building blocks to create a more complex substance or system. In other words, it is the creation of something new from individual parts or elements. Synthesis can occur at various levels, from the molecular level to the level of complex systems or structures.
Purines and pyrimidines, which are nitrogenous bases, are produced separately and subsequently joined to the sugar-phosphate backbone of the nucleotide during the synthesis of nucleotides. These nitrogenous bases will synthesise with the marker nitrogen from aspartate already present.
The nitrogen atoms in the ring structure of purines are derived from both glutamine and aspartate. Inosine monophosphate (IMP), a precursor for the production of AMP and GMP, is formed as the first step in the synthesis of purine nucleotides. A simplified diagram of the production of purine nucleotides is shown below, with the nitrogen atoms from aspartate and glutamine indicated:
Aspartate + PRPP -> IMP (label N from aspartate)Glutamine + ATP -> PRPP (label N from glutamine)IMP + Aspartate + GTP -> AMP (label N from aspartate)IMP + Glutamine + ATP -> GMP (label N from glutamine)In the case of pyrimidines, the nitrogen atoms in the ring structure come from aspartate and glutamine. The synthesis of pyrimidine nucleotides starts with the formation of uridine monophosphate (UMP), which serves as a precursor for the synthesis of the other pyrimidine nucleotides. The following is a simplified scheme of the synthesis of pyrimidine nucleotides, indicating the nitrogen atoms that come from aspartate and glutamine:
Aspartate + Carbamoyl phosphate -> Carbamoyl aspartate (label N from aspartate)Carbamoyl aspartate + ATP -> Uridine monophosphate (UMP) (label N from aspartate)Glutamine + ATP -> Carbamoyl phosphate (label N from glutamine)UMP + Aspartate + GTP -> CTP (label N from aspartate)Therefore, the nitrogen atoms in the purine and pyrimidine bases that include the marker nitrogen from aspartate will be as follows:
In purines: the nitrogen atoms in the 6- and 7-membered rings (i.e., atoms N3, N7, and N9) will include the marker nitrogen from aspartate.In pyrimidines: the nitrogen atoms in the 6-membered ring (i.e., atoms N1 and N3) will include the marker nitrogen from aspartate.Learn more about synthesis of nucleotides click here:
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A 45.58 g sample of a substance is initially at 28.1 °C. After absorbing 1585 J of heat, the temperature of the substance is 124.2 °C. What is the specific heat ( ) of the substance?
c= Jg⋅∘C
Explanation:
We can use the formula for calculating the heat absorbed by a substance to find its specific heat:
q = mcΔT
where q is the heat absorbed, m is the mass of the substance, c is its specific heat, and ΔT is the change in temperature.
We can first calculate the change in temperature:
ΔT = 124.2 °C - 28.1 °C = 96.1 °C
Next, we can substitute the given values into the formula and solve for c:
1585 J = (45.58 g) c (96.1 °C)
c = 1585 J / (45.58 g × 96.1 °C)
c = 0.357 J/g⋅∘C
Therefore, the specific heat of the substance is 0.357 J/g⋅∘C.
A person has $4000to invest. Part of the money is to be placed in a certificate of deposit paying %, per year. The rest is to be placed in corporate bonds paying %, per year. If he wishes to obtain an overall return of % per year, how much should be placed in each investment?
Answer:
Let x = amount invested in certificate of deposit (in dollars)
Let y = amount invested in corporate bonds (in dollars)
Total amount invested = $100: x + y = 100
CD pays 2% per year, corporate bonds pay 4% per year, total return is 3% per year
Total return on investments = 3% of $100 = $3: 0.02x + 0.04y = 3
Simplifying the equations:
x + y = 100
2x + 4y = 300
Solving for x:
x + y = 100
x = 50
Therefore, the person should invest $50 in the certificate of deposit and $50 in corporate bonds to obtain an overall return of 3% per year.
Explanation:
A chemist adds 0.10 L of a 2.1M potassium iodide (KI) solution to reaction flask. Calculate the mass in grams of potassium iodide the chemist has added to the flask. Be sure your answer has the correct number of significant digits.
The correct mass of potassium iodide added to the flask is 35g. To calculate the mass of potassium iodide added to the flask, we need to use the formula
mass = volume x concentration x molar mass
Putting the values -volume = 0.10 L (given)
concentration = 2.1 M (given)
molar mass of KI = 166.0028 g/mol (from periodic table)
Substituting these values in the formula, we get:
mass = 0.10 L x 2.1 mol/L x 166.0028 g/mol = 35.001484 g
Rounding off to the correct number of significant digits (two), the mass of potassium iodide added to the flask is:
mass = 35 g (rounded to two significant digits)
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A 30.6 g sample of the compound X2O3 contains 14.4g of oxygen atoms. What is the molar mass of element X?
To find the molar mass of element X, we need to use the given information to determine the number of moles of oxygen in the sample, and then use that to calculate the number of moles of element X in the sample. Then we can divide the mass of the sample by the number of moles of element X to get the molar mass.
First, we need to calculate the number of moles of oxygen in the sample. We can use the molar mass of oxygen (16.00 g/mol) to convert the mass of oxygen atoms to moles:
moles of oxygen = mass of oxygen / molar mass of oxygen
moles of oxygen = 14.4 g / 16.00 g/mol
moles of oxygen = 0.900 mol
Next, we need to use the formula of X2O3 to determine the number of moles of element X in the sample. The formula indicates that there are 2 moles of element X for every 3 moles of oxygen in the compound. Therefore:
moles of X = 2/3 × moles of oxygen
moles of X = 2/3 × 0.900 mol
moles of X = 0.600 mol
Now we can use the mass of the sample and the number of moles of element X to calculate the molar mass of X:
molar mass of X = mass of sample / moles of X
molar mass of X = 30.6 g / 0.600 mol
molar mass of X = 51.0 g/mol
Therefore, the molar mass of element X is 51.0 g/mol.
ANSWER ALL THE FOLLOWING
A. Cr2O3 (Chromium (III) Oxide); Stock Name: Chromic Oxide b. (NH4)3PO4 (Ammonium Phosphate); Stock Name: Ammonium Phosphate c. CaSO4 (Calcium Sulfate); Stock Name: Gypsum.
What is Gypsum ?
Gypsum is a soft, white, mineral composed of calcium sulfate dehydrate. It is typically found in the form of sedimentary rock and is an important component of soil. Gypsum can be used in a variety of industrial and commercial applications. It is often used in the production of plaster and drywall, as well as in cement and concrete.
II. a. Iron(II) Chloride
b. Barium Hydroxide
c. Lithium Cyanide
d. Lead(II) Chloride
The correct pairing is d. P4Q10: tetraphosphorus decoxide. Phosphorus can form up to four single bonds with oxygen, so the correct compound name would be tetraphosphorus decoxide.
IV.a. C2H2
b. C2H4
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10
Select the correct answer.
Which property of a substance can be determined using a pH indicator?
OA. acidity
OB. boiling point
O C. density
OD. electrical conductivity
OE
Which property of a substance can be determined using a pH indicator
Answer: (A) acidity
Explanation: Acidity is a measure of how acidic a substance is. pH is a system used to measure the H+ ion concentration in a substance. Using the equation -log([H+]=pH, if given a pH value less than 7, a substance is acidic, and greater than 7 indicates basicity.
Common indicators are phenolphthalein and bromthymol blue which turn different colors depending on the acidity of the solution they're in. This color tells us nothing about the boiling point, density, or electrical conductivity.
Hope this helps!
if 54.9g of aluminum hydroxide, al(oh)3, is neutralized with 91.9g of sulfuric acid, h2so4. how many grams of al₂(so₄)₃ will be produced
Answer:
120.2 g of aluminum sulfate will be produced
Explanation:
The balanced chemical equation for the reaction between aluminum hydroxide and sulfuric acid is:
2Al(OH)3 + 3H2SO4 → Al2(SO4)3 + 6H2O
According to the equation, it takes 2 moles of aluminum hydroxide to react with 3 moles of sulfuric acid to produce 1 mole of aluminum sulfate.
To find out how many grams of aluminum sulfate will be produced, we first need to calculate the number of moles of each reactant.
The molar mass of aluminum hydroxide (Al(OH)3) is:
Al = 26.98 g/mol
O = 15.99 g/mol (3 atoms)
H = 1.01 g/mol (9 atoms)
Total = 78.00 g/mol
Therefore, 54.9 g of aluminum hydroxide is equal to 54.9 g / 78.00 g/mol = 0.7038 moles of aluminum hydroxide.
The molar mass of sulfuric acid (H2SO4) is:
H = 1.01 g/mol (2 atoms)
S = 32.07 g/mol
O = 15.99 g/mol (4 atoms)
Total = 98.08 g/mol
Therefore, 91.9 g of sulfuric acid is equal to 91.9 g / 98.08 g/mol = 0.9361 moles of sulfuric acid.
Since 2 moles of aluminum hydroxide react with 3 moles of sulfuric acid to produce 1 mole of aluminum sulfate, the limiting reactant in this case is aluminum hydroxide, as it is present in the smaller amount.
The number of moles of aluminum sulfate produced can be calculated as:
0.7038 moles Al(OH)3 × (1 mole Al2(SO4)3 / 2 moles Al(OH)3) = 0.3519 moles Al2(SO4)3
The molar mass of aluminum sulfate (Al2(SO4)3) is:
Al = 26.98 g/mol (2 atoms)
S = 32.07 g/mol (3 atoms)
O = 15.99 g/mol (12 atoms)
Total = 342.15 g/mol
Therefore, the mass of aluminum sulfate produced is:
0.3519 moles Al2(SO4)3 × 342.15 g/mol = 120.2 g
Therefore, 120.2 g of aluminum sulfate will be produced.
How many grams of NaOH reacted
3.49 grams of NaOH reacted in this precipitation reaction.
How to find the amount of NaOHFrom the balanced chemical equation
1 mole of Fe(NO3)3 reacts with 3 moles of NaOH to produce 1 mole of Fe(OH)3 and 3 moles of NaNO3.
We can start by calculating the number of moles of Fe(OH)3 produced:
molar mass of Fe(OH)3
= 55.85 g/mol + 3(16.00 g/mol + 1.01 g/mol)
= 106.88 g/mol
moles of Fe(OH)3 = 28.0 g / 106.88 g/mol = 0.262 moles
According to the stoichiometry of the balanced equation,
1 mole of Fe(OH)3 is produced by reacting with 3 moles of NaOH. Therefore, the number of moles of NaOH used in the reaction is:
moles of NaOH = 0.262 moles / 3 = 0.0873 moles
Convert the number of moles to grams:
molar mass of NaOH
= 22.99 g/mol + 16.00 g/mol + 1.01 g/mol
= 40.00 g/mol
grams of NaOH
= moles of NaOH x molar mass of NaOH
= 0.0873 moles x 40.00 g/mol
= 3.49 g
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Mg(s)+2HCl(aq)=MgCl2(aq)+H2(g)
How many g of Magnesium metal are required to obtain 2.6L of hydrogen gas?
The answer is 21.5 L ,So, start with the balanced chemical equation for the decomposition of hydrochloric acid.
What is hydrochloric used for?An liquid solution of hydrogen chloride is what is known as hydrochloric acid, also referred to as muriatic acid. It has an unmistakably strong odour and is translucent. It is categorised as a powerful acid. In the digestive processes of the majority of mammal species, including humans, it is a part of the gastric acid. A crucial commercial substance and reagent for laboratories is hydrochloric acid.
Chemical burns from hydrochloric acid can be extremely painful if they come into touch with skin or other organs. Ingestion of hydrochloric acid can result in blindness. The concentration of the acid and how long it remains in touch with the organs determine how severe the burns are.
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Help me!
“When nucleotides are changed in the DNA what happens to the codons in mRNA, and what effects result during protein synthesis?”
Answer:
the ribosome will read the mRNA sequence differently
Explanation:
The change can cause the amino acid to be produced
Hydrogen peroxide breaks down, releasing oxygen, in the following reaction:
2H.02(ag) - 2H,0(1) + 02(g)
a. What mass of oxygen is produced when 1.840 mol of H,O, decomposes?
b. What mass of water is produced when 5.0 mol O, is produced by this reaction?
The mass of oxygen produced when 1.840 mol of H2O2 decomposes is 29.44g and the mass of water produced when 5.0 mol O, is produced by this reaction is 180.02g.
Given that the Hydrogen peroxide breaks down, releasing oxygen as:
[tex]2H2O2(g) -- > 2H2O(1) + O2(g)[/tex]
a.) The mass of oxygen is produced = m
Given the number of moles of H2O2 = 1.840
We know The molecular weight of H2O2 is = 34.01 g/mol
the molecular weight of O2 is = 32.00 g/mol.
We know that number of moles is equal to mass of substance divided by its molar mass such that:
number of moles of O2 = 1.840 mol H2O2 x (1 mol O2 / 2 mol H2O2)
The mass of O2 = 0.920 mol O2 * 32 g/mol O2 = 29.44g
b.) Given the number of moles of O = 5.0
Then number of moles of H2O produced = 5.0 mol O2 x (2 mol H2O / 1 mol O2) = 10 mol H2O
mass of H2O produced = 10 mol H2O * (18.02 g H2O / 1 mol H2O) = 180.02 g H2O
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who are the molecules that would hydrogen have an oxydation state of zero
Answer:
It does not have an overall charge, and is a neutral molecule. For free elements, the oxidation number is zero. Hence, the oxidation number of hydrogen in ${H_2}$ is zero as well. Some examples of free elements having zero oxidation state are: $Na,\,Fe,\,{O_2},\,{S_8}$ et cetera.
Explanation:
2 LiOH + CO2 > Li2CO3 + H2O
How many milliliters H20(density = .997 g/mL could form from 29.3g LiOH
Answer:
We can use stoichiometry to determine the amount of water produced when 29.3 g of LiOH reacts with CO2.
First, we need to convert 29.3 g of LiOH to moles:
moles of LiOH = mass/molar mass = 29.3 g / (6.941 g/mol + 15.999 g/mol + 1.008 g/mol) = 0.5 mol
From the balanced chemical equation, we see that 2 moles of LiOH react with 1 mole of CO2 to produce 1 mole of H2O. Therefore, we can say:
0.5 mol LiOH × (1 mol H2O / 2 mol LiOH) = 0.25 mol H2O
Now, we can use the molar mass of water to convert moles to grams:
mass of H2O = moles × molar mass = 0.25 mol × 18.015 g/mol = 4.504 g
Finally, we can use the density of water to convert grams to milliliters:
volume of H2O = mass / density = 4.504 g / 0.997 g/mL = 4.52 mL
Therefore, approximately 4.52 mL of water could form from 29.3 g of LiOH.
Light is emitted by atoms that have been excited by
which of the following?
Which of the following statements is NOT true about what happens in all chemical reactions? The ways in which atoms are joined together are changed. New atoms are formed as products. The starting substances are called reactants. The bonds of the reactants are broken and new bonds of the products are formed.
The statement that is not true about what happens in all chemical reactions is as follows: the ways in which atoms are joined together are changed (option A).
What is a chemical reaction?Chemical reaction is a process, typically involving the breaking or making of interatomic bonds, in which one or more substances are changed into others.
A chemical reaction is different from physical change being that a chemical reaction involves the breaking of bonds in the substance called reactants to form new substances called products.
Characteristics of a chemical reaction are as follows:
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Please help fast
Thankssssssss
The total number of moles of ammonia produced when 10 moles of hydrogen reacts with a mole of nitrogen would be = 6.7 moles of ammonia.
How to calculate the calculate the total number of moles of ammonia?From the balanced chemical equation given above, 1 mole of nitrogen reacts with 3 moles of hydrogen to produce 2 moles of ammonia.
This means that;
3 moles of Hydrogen = 2 moles of ammonia
10 moles of hydrogen = X moles of ammonia
Make X the subject of formula;
X = 10×2/3
= 20/3
= 6.7 moles of ammonia.
Therefore when 10 mole of hydrogen reacts with nitrogen, 6.7 mole of ammonia will be produced.
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The diagram below shows a gas with an initial pressure of 3060 mm Hg in a cylinder constant temperature. The gas expands inside the cylinder and pushes the piston
the final pressure of the gas inside the cylinder is 784 mm Hg.
What is Boyle's law?
To solve this problem, we can use Boyle's Law, which states that the pressure of a gas is inversely proportional to its volume at constant temperature. Mathematically, this can be written as:
P1V1 = P2V2
where P1 and V1 are the initial pressure and volume, and P2 and V2 are the final pressure and volume.
Substituting the given values into the equation, we get:
3060 mm Hg x 0.520 L = P2 x 2.03 L
P2 = (3060 mm Hg x 0.520 L) / 2.03 L
P2 = 784 mm Hg
Therefore, the final pressure of the gas inside the cylinder is 784 mm Hg.
The answer is (B) 784 mm Hg.
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I've been trying to Understand what this problem met, along with I don't know which law I'm using
Can anyone help me out on this?
If 60.0 L of nitrogen is collected over water at 40.0 °C when the atmospheric pressure (total pressure) is 760.0 mm Hg, what is the partial pressure of the nitrogen? (hint: one the gases is water vapor)
(The vapor pressure of water of water at 40°C is 55.3 mmHg, at 50°C is 92.5 mmHg)
According to the question the partial pressure of nitrogen is 704.7 mmHg.
What is pressure?Pressure is a physical quantity that describes the amount of force applied to an object per unit area. It is measured in units of force per unit area, such as pascals (Pa) or pounds per square inch (psi). Pressure is an important factor in many scientific fields such as thermodynamics, fluid dynamics, and mechanics. Pressure is also a measure of how much energy is stored in a given material or system. Pressure is a scalar quantity, meaning that it has a magnitude but no direction. Pressure can be created by a number of sources, such as gravity, the exertion of force, and the application of heat.
The partial pressure of nitrogen is equal to the total pressure of the system minus the vapor pressure of water vapor. In this case, the total pressure is 760.0 mmHg, and the vapor pressure of water at 40°C is 55.3 mmHg. Thus, the partial pressure of nitrogen is:
Partial pressure of nitrogen = 760.0 mmHg - 55.3 mmHg = 704.7 mmHg
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The periodic table shown below can be used to help determine how the properties of different compounds compare.
How do the physical and chemical properties of calcium iodide (CaI2) compare to carbon disulfide (CS2) and sodium fluoride (NaF)?
The table below lists the chemical and physical features of sodium fluoride (NaF), sulfite (CS2), and calcium iodide (CaI2):
What does the term periodic table mean?Scientists can easily identify the properties of specific features, like its mass, electron number, and electron, thanks to the periodic table's organization.
At normal temperature, CaI2 is a solid, CS2 is a liquids, and NaF is a stable.
Melting Point: CaI2, CS2, and NaF all have high melting temperatures of 819°C, -110.8°C, and 993°C, respectively.
Boiling Point: The specific heats of CaI2, CS2, and NaF are 1,309°C, 46.3°C, and 1,705°C, respectively.
Water Reactivity: CaI2 combines with water to produce calcium hydroxide and hydroiodic acid. As CS2 cannot disintegrate in water, it does not mix with it. NaF interacts with water to generate alkaline solution and hydrofluoric acid.
CaI2 is a salt that decomposes in water to produce calcium metal ions and iodide anions, giving it acid-base properties. In water, the acid CS2 and the basic salt NaF separate to produce sodium metal ions and fluoride anions.
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A--B--> 3-ethyl-4- methylhexanal + C --D --> E + F
A =
B =
C =
D =
E =
F =
The structure of the compound is shown in the image attached
How do you deduce the structure of an organic compound?The molecular formula gives information about the types and number of atoms in the compound. This can be used to determine the possible functional groups and the degree of unsaturation (the number of rings or double bonds) in the compound.
When we look at the name of the compound, we can be able to tell the bonds and the substituents that we have in the compound and that would help us to deduce its structure.
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A metal object has a mass of 16.7 g. It was placed in a graduated cylinder containing
100.0 mL of water, the water level rose to 106.2 mL. What is the density and identity of
this metal?
To determine the density and identity of the metal, we need to first calculate the volume of the metal object, and then use its mass and volume to calculate the density.
The volume of the metal object can be calculated by measuring the change in the volume of the water in the graduated cylinder before and after the object was placed in it. The difference between the final volume (106.2 mL) and the initial volume (100.0 mL) is equal to the volume of the metal object.
Volume of metal object = final volume - initial volume
Volume of metal object = 106.2 mL - 100.0 mL
Volume of metal object = 6.2 mL
Next, we can calculate the density of the metal using the formula:
Density = mass / volume
Substituting the values we have:
Density = 16.7 g / 6.2 mL
Density = 2.69 g/mL
The density of the metal is 2.69 g/mL.
To identify the metal, we can compare its density to the densities of known metals. A quick search shows that the density of aluminum (Al) is around 2.7 g/mL, which is close to the calculated density of the metal in question. Therefore, it is possible that the metal object is made of aluminum. However, we cannot be certain without further testing.
how is the diaphragm needed for the muscular system
2.72 Name the following ionic compounds: (a) KCN, (b) NaBrO2, (c) Sr(OH)2, (d) CoTe, (e) Fe2(CO3)3, (f) Cr(NO3)3, (g) (NH4)2SO3, (h) NaH2PO4, (i) KMnO4, (j) Ag2Cr2O7.
KCN is potassium cyanide, and NaBrO2 is sodium bromide, strontium hydroxide (SrOH), iron carbonate (Fe2CO3)3, and chromium nitrate (CrNO3)3.
Why is the compound NH4 2SO4 an ionic one?Ammonium NH4+ and sulfate SO42- are the two polyatomic ions that make up the ionic compound Ammonium Sulfate. To balance the sulfate ions, Ammonium Sulfate (NH4)2SO4 is produced by removing one electron from ammonium. Two NH4+ particles and one SO4 2-particle is found in every atom of ammonium sulfate.
What is the ionic compound of NaH2PO4 that follows?Monosodium phosphate, monosodium dihydrogen orthophosphate, and monosodium phosphate are the three types of sodium phosphate. Formula Linear: NaH2PO4.
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A heated sample was found to contain
85.25 g of anhydrous compound and
14.75 g H₂O. The molar mass of the
anhydrate is 208 g/mol. What is the value
of "n" in the hydrate formula?
A. 15
B. 1
C. 2
D. 10
Anhydrous Compound - nH₂O
.
This means that the ratio of anhydrous compound to water in the hydrate is 1:2. Therefore, the value of "n" in the hydrate formula is 2.
What is a hydrate and how to find ?To determine the value of "n" in the hydrate formula, we need to use the given information to calculate the number of moles of anhydrous compound and water in the sample, and then use the mole ratio between them to determine the value of "n".
First, we can calculate the number of moles of anhydrous compound:
moles of anhydrous compound = mass / molar mass
moles of anhydrous compound = 85.25 g / 208 g/mol
moles of anhydrous compound = 0.4091 mol
Next, we can calculate the number of moles of water:
moles of water = mass / molar mass
moles of water = 14.75 g / 18.015 g/mol
moles of water = 0.8180 mol
Anhydrous Compound - nH₂O
The mole ratio between the anhydrous compound and water is:
moles of anhydrous compound : moles of water
0.4091 mol : 0.8180 mol
We can simplify this ratio by dividing both sides by the smaller value:
0.4091 mol / 0.4091 mol : 0.8180 mol / 0.4091 mol
1 : 2
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The antibiotic gramicidin A can transport Na+ ions into a certain cell at the rate of 5.0 × 107 Na+ ions/channel · s. Calculate the time in seconds to transport enough Na+ ions to increase its concentration by 7.10 × 10−3 M in a cell whose intracellular volume is 1.60 × 10−10 mL.
The amount of ions is caculated by, the formula of follows [tex]$$c=M \times V$$[/tex][tex]$C$[/tex] is the amount [tex]$M$[/tex] is the molarity and[tex]$V$[/tex] is the volume.
What is called chemical reaction?In the chemical reaction, the reaction bate is the change in concentration of reactant per unit time. The time for a reaction is calculated by the formula of fallers.
Convey the volume from [tex]$m L$ to $L$[/tex] by the conversion factor as follows
[tex]\begin{aligned}1 \mathrm{~mL} & =10^{-3} \mathrm{~L} \\1.80 \times 10^{-10} \mathrm{~mL} & =1.80 \times 10^{-10} \mathrm{mc} \times \frac{10^{-3}}{1 \mathrm{~mL}} \\& =1.80 \times 10^{-13} \mathrm{~mL}\end{aligned}[/tex]
Calculate the time by the eq [tex]$83.464 \times 10^7$[/tex]Io runt, of
[tex]$$\begin{aligned}t & =\frac{83.464 \times 10^7 \mathrm{Na}^{-1} \text { ions }}{5.0 \times 10^7 \mathrm{Na}^{-1} \text { io ry / chanel } \mathrm{s}} \\& =16.69 \text { chanel }-\mathrm{s}\end{aligned}$$[/tex]
The time required is 16.69chanel-s
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A sample liquid is heated in a closed container until it changes to a gas. What happens to the size of the particles in the sample? What happens to the number of particles in the sample? What happens to the average speed of the particles?
According to the forces of attraction and kinetic theory of gases , the size and number of particles in the sample remains same while the average speed of the particles increases.
What are forces of attraction?Forces of attraction is a force by which atoms in a molecule combine. it is basically an attractive force in nature. It can act between an ion and an atom as well.It varies for different states of matter that is solids, liquids and gases.
The forces of attraction are maximum in solids as the molecules present in solid are tightly held while it is minimum in gases as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.
The physical properties such as melting point, boiling point, density are all dependent on forces of attraction which exists in the substances.
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Explain why not all sugar is bad for you give some examples of good sugars in your explanation
Answer:
Not all sugars are bad for you because there are different types of sugars that have different effects on the body.
For example, natural sugars found in fruits, vegetables, and dairy products are considered good sugars because they are accompanied by fiber, vitamins, and minerals that are beneficial for the body. These sugars are also absorbed more slowly by the body, which helps to regulate blood sugar levels and prevent spikes in insulin.
Another example of a good sugar is honey, which contains antioxidants and has antibacterial properties. It is also a natural sweetener that can be used in moderation to add flavor to foods and drinks.
On the other hand, added sugars found in processed foods and drinks are considered bad sugars because they are often high in calories and low in nutrients. These sugars can contribute to weight gain, inflammation, and other health problems when consumed in excess.
Examples of added sugars to avoid include high fructose corn syrup, table sugar, and syrups used in processed foods and drinks. It is important to read food labels and limit intake of added sugars to maintain a healthy diet.
Question 3Describe the energy in nuclear fuel and the way in witch it’s converted to electrical energy
The energy in nuclear fuel comes from the fission (splitting) or fusion (merging) of atomic nuclei. When the nucleus of an atom is split or merged, a large amount of energy is released in the form of heat and radiation. This energy is known as nuclear energy, and it is one of the most concentrated forms of energy known to us.
To convert nuclear energy into electrical energy, we typically use a nuclear reactor, which is a device that uses controlled nuclear reactions to generate heat. The heat is then used to produce steam, which drives a turbine connected to a generator. The generator converts the mechanical energy of the turbine into electrical energy, which can be distributed to homes and businesses through a power grid.
In more detail, the nuclear reactor contains fuel rods that are made of a radioactive material, such as uranium-235 or plutonium-239. When a neutron strikes the nucleus of one of these atoms, it causes the nucleus to split into two smaller nuclei, along with the release of additional neutrons and a large amount of heat. This process is known as nuclear fission, and it is sustained in the reactor by controlling the rate of neutron production and absorption.
The heat produced by nuclear fission is transferred to a coolant, such as water or gas, which carries the heat to a heat exchanger. In the heat ex
Calculate the number of moles in 80.0 g of phosphorus
There are 2.586 moles of phosphorus in 80.0 g of phosphorus.
This number is known as Avogadro's number, which is approximately 6.022 x 10^23.
What is Moles?
Moles are a unit of measurement used in chemistry to express the amount of a substance. One mole of a substance is the volume of that substance that has the same number of atoms as there are in 12 grammes of pure carbon-12. Other terms for moles include molecules and ions.This number is known as Avogadro's number, which is approximately 6.022 x 10^23.
To calculate the number of moles in 80.0 g of phosphorus, we need to divide the mass of phosphorus by its molar mass. The molar mass of phosphorus is 30.97 g/mol.
Number of moles of phosphorus = 80.0 g / 30.97 g/mol
Number of moles of phosphorus = 2.586 moles
Therefore, there are 2.586 moles of phosphorus in 80.0 g of phosphorus.
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