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Answer:
here is no question (e).............
Related Questions
Please help me with all ASAP I’ll mark brainly
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Answer:
Explanation:
1.c
2.j
3.h
4.b
5.f
6.d
7.a
8.i
9.e
10.g
Using the standardized NaOH solution in the previous
question, the titration of 5.00 mL of vinegar required
42.25 mL of NaOH. What is the % of acetic acid in the
vinegar? Previous standardized NaOH solution = 0.098
Answers
Answer: Using the standardized NaOH solution in the previous question, the titration of 5.00 mL of vinegar required 42.25 mL of NaOH. What is the % of acetic acid in the vinegar? Concentration of NaOH from previous question= 0.0986 M. David C.
Explanation:
Please mark as brainliest for me.Thank you so much
The percentage of acetic acid in vinegar is 4.988 %., When the titration of 5.00 mL of vinegar required 42.25 mL of NaOH.
What is titration?Titration is defined as the process of chemical analysis method in which the amount of a sample's constituent is determined by mixing a precisely measured amount of the desired constituent with another material in a precise, known proportion. The equivalence point, or the point at which chemically equivalent amounts of the reactants have been combined, is to be detected by the titration.
According to the titration principle, V1=the volume of acetic acid and V1S1=V2S2
S1 is the acetic acid's strength
V1 = 42.25 ml * 0.0986 M / 5 ml = 0.833 M where V2 = Volume of NaOH S2 = Strength of NaOH
Hence, 1000 ml Vinegar contains 0.833 moles of acetic acid per 100 ml of vinegar (0.0833*60). G=4.998 grams of acetic acid
The amount of acetic acid in vinegar is 4.988%.
Thus, the percentage of acetic acid in vinegar is 4.988 %., When the titration of 5.00 mL of vinegar required 42.25 mL of NaOH.
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______help in increasing rates of reactions
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Answer:
Catalysts help in increasing rates of reactions
Answer:
тємρєяαтυяє
Explanation:
Temperature. Usually reactions speed up with increasing temperature.
Radar images storms by
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Which pair of compounds has the same empirical formula? C_{3}*H_{8} and C_{3}*H. C_{2}*H_{2} and C_{2}*H C_{4}*H_{10} and C_{6}*H C_{4}*H_{10} and C_{2}*H_{5}
Answers
Considering the definition of empirical and molecular formula, the pair of compounds C₄H₁₀ and C₂H₅ has the same empirical formula.
The empirical formula is the simplest expression to represent a chemical compound and indicates the elements that are present and the minimum proportion in whole numbers that there are between their atoms. This formula is also known as the "minimum formula".
On the other side, the molecular formula is the chemical formula that indicates the number and type of different atoms present in the molecule. But unlike the chemical formula, it shows the actual number of atoms that make up a molecule.
In this case, you can observe that if you divide the amount of each element by 2 in compound C₄H₁₀, you get C₂H₅, which is the empirical formula of the compound.
Finally, the pair of compounds C₄H₁₀ and C₂H₅ has the same empirical formula.
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https://brainly.com/question/6960643What is the mass of a baseball that has kinetic energy of 105 and is traveling at 10 m/s
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Answer:
K.E =1/2 Mass×(velocity)2
Explanation:
1/2mass=K.E/Velocity 2
1/2mass=105/(10m/s)2
1/2mass=105/100m/s
1/2mass=21/20m/s
mass=21/20m/s ×2
mass=21/10
mass=2.1 Kilogram (put the value)
what is the percent by volume of a solution formed by mixing 25ml of isopropanol with 45ml water
Answers
Answer:
I assume that you mix the 25 mL alcohol with 45 mL water.
The answer depends on a big IF : IF the volumes are additive. Very often volumes of liquids are not additive
Total volume = 70 mL
isopropyl alcohol %(v/v) = 25mL/ 70 mL * 100 % = 35.7% v/v
The answer should have only 2 significant digits: 36%v/v
Explanation:
Hope it helps
The percent by volume of a solution formed by mixing 25 ml of isopropanol with 45 ml of water is 35.71% which is rounded off to 36%.
What is meant by percent by volume of a solution?Percent volume is defined as the concentration of a particular solute which is measured in terms of volume present in a solution. The volume of the solution is present in the denominator which indicates the total volume of all components .
It is expressed as,
percent volume= volume of solute/volume of solution×100
It is used for solutions which are made by mixing two components . It is one of the ways of expressing concentrations of mixture with a dimensionless quantity.
Percent volume of the given solution is calculated by substituting the given values in the formula like, 25/70×100=35.71%
Thus, the percent by volume concentration of the solution is 35.71%≈36%.
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Il See Periodic Table See Hint
A gas composed of chlorine and oxygen has a density of 2.875 g/L at 750.0 mm Hg and 11°C. What is the most likely molecular formula
of the gas?
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х
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Answers
The molecular formula shows the number of atoms present. The molecular formula of the gas is most likely ClO2.
In terms of gas density and molar mass, the ideal gas equation can be written in the form; PM = dRT
Where;
P = pressure of the gas
M = molar mass of the gas
d = density of the gas
R = molar gas constant
T = temperature of the gas
Making the molar mass of the gas the subject of the formula;
M = dRT/P
d = 2.875 g/L
R = 0.082 atmLmol-1K-1
T = 11°C + 273 = 284 K
P = 750.0 mm Hg or 0.99 atm
Substituting values;
M = 2.875 g/L × 0.082 atmLmol-1K-1 × 284 K/ 0.99 atm
M = 67.6 g/mol
The gas is most likely ClO2.
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Which of the following has more atoms?
One mole of zinc
One mole of gold
One mole of silver
One mole of magnesium
O They all have the same number of atoms
Answers
Answer:
They all have the same number of atoms
Explanation:
Which of the following has more atoms?
One mole of zinc
One mole of gold
One mole of silver
One mole of magnesium contians
O They all have the same number of atomst
a mole of anything contains Avogadros number of 6.022X10^23 things
which has the greatest number of thing? a dozen eggs, a dozen cookies, a dozen pizzas?
a dozen is a number means 12
a mole is a number that that means 6.022 X 10^23 you calculate the molar mass from the chemical formula, but every j mole contains 6.022X10^23
particles.
just like every dozen contains 12
so
They all have the same number of atoms
What happens when the two atoms are fairly close?
Answers
Question 5 of 5
The rows in the periodic table are called periods. What is true about elements
in the same period?
O A. They have the same atomic mass.
B. Their atomic numbers increase by 1 from left to right.
C. Their magnetism increases in strength from left to right.
D. They have similar chemical properties.
SUBMIT
Answers
Answer:
B. Their atomic numbers increase by 1 from left to right
What is the mass of 2.3 x 10²¹ atoms of bromine?
Answers
Answer:0.305g
Explanation:
mass = 79.9x(2.3 x 10^21) / (6.02 x 10^23)
= 0.305
Is water wet? Why or why not
Answers
Answer: umm, yes? DUH
Explanation: touch some falling out of a tap
Answer:
Water is wet,
Explanation:
in the sense of being a liquid which flows easily, because its viscosity is low, which is because its molecules are rather loosely joined together. So it is wet.
If the atomic mass of an atom is 16 and its atomic number is 7. how many
neutrons does it have?
Answers
Answer:
8
Explanation:
Look at the numbered locations. Our solar system can be found at_____
Location 1
Location 2
Location 3
Location 4
Answers
Answer:
location 3...........
6. What is the atomic mass of Hafnium if out of every 200 atoms, 10 have mass 176.00 g/mol, 38 have mass
177.00 g/mol, 54 have mass 178.00 g/mol, 28 have mass 179.00 g/mol, and 70 have mass 180.00 g/mol?
Answers
Answer:
fg
Explanation:
How many protons, neutrons, and electrons are there in a neutral atom of 60 Co (cobalt- 60 )?
Answers
Cobalt-60 is comprised of 27 protons, 33 neutrons, and 27 electrons. Nuclear reactors are used to artificially create it.
What is cobalt- 60?A radioactive isotope containing cobalt with something like a half-life of 5.2713 centuries is called cobalt-60 (60Co). Nuclear reactors are used to artificially create it. Neutron irradiation of bulk material of the monoisotopic as well as mononuclidic cobalt element 59 Co is necessary for deliberate industrial manufacture.
The accidentally generated 60 Co in the latter instance (inside the absence of additional cobalt) is mostly the product of many phases involving neutron activation on iron isotopes inside the reactor. Cobalt-60 is comprised of 27 protons, 33 neutrons, and 27 electrons.
Therefore, cobalt-60 is comprised of 27 protons, 33 neutrons, and 27 electrons.
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What did you include in your response? Check all that
apply.
o Organisms eat food to obtain carbohydrates, lipids,
and proteins, which are found in food.
Organisms use these molecules for energy and
growth.
Answers
Answer:
WHAT DID YOU INCLUDE IN YOUR RESPONSE
which among the materials have a varying amount of components are they compounds or mixtures
Answers
Answer:
Matter can be broken down into two Zalo categories: pure substances and mixtures. Pure substances are further broken down into elements and compounds. Mixtures are physically combined structures that can be separated into their original components.
What are the substances you start with in a chemical reaction called?
A. The intermediates
B. The products
C. The mixture
D. The reactants
Answers
where does fertilization occurs in human beings
Answers
In human beings fertilization occurs in fallopian tube
Answer:
Fertilization usually takes place in a fallopian tube that links an ovary to the uterus. If the fertilized egg successfully travels down the fallopian tube and implants in the uterus, an embryo starts growing.
How many grams are in 0.990 mol of neon?
mass in grams:
Answers
Explanation:
Multiply the given moles times the molar mass of neon, 20.180 g/mol (periodic table).
Answer:
Multiply the supplied moles by 20.180 g/mol, the molar mass of neon (periodic table).
Explanation:
need help :( number 5 and 6
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The genesis of a poem for me is usually a cluster of words. The only good metaphor I can think of is a scientific one: dipping a thread into a supersaturated solution to induce crystal formation. I don't think I solve problems in my poetry; I think I uncover the problems.
Number 6.
Unsaturated solutions: found in the vast majority of solutions. eg. blood, soda, alcoholic drinks, cell sap, battery acid.
Supersaturated solutions: invert sugar (a mixture of glucose and fructose), gasses dissolved in crude oil when it is still untapped, some clouds (those that cause cloudbursts).
saturated solution: the carbon dioxide dissolved in sodas (unopened), nitrogen in the air in the earth.
If the number of neutrons in the nucleus of the atom is 41, and the atomic number is 40, what is the mass number of that atom
Answers
If the number of neutrons in the nucleus of the atom is 41, and the atomic number is 40, the mass number of that atom will be 81
What is mass number?Mass number is the sum of the number of protons which is the atomic number and neutrons of an atom.
It is represented using the letter ‘A.’
How to calculate the mass numberMass number = atomic number + neutrons
We have the atomic number as 40 and the number of neutrons as 41
The mass number = 40 + 41 = 81
Therefore, the mass number of the atom will be 81
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Is
M
For the following reaction, 43.1 grams of iron are allowed to react with 86.8 grams of chlorine gas.
ts
M
iron (s) + chlorine (g)
iron(III) chloride (s)
ts
M
What is the maximum amount of iron(III) chloride that can be formed?
grams
ots
M
What is the FORMULA for the limiting reagent?
ots
M
ots
What amount of the excess reagent remains after the reaction is complete?
grams
Ots2req
O
Submit Answer
Retry Entire Group
9 more group attempts remaining
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Answer:
here is your answer
enjoy
what happens to the matter in water as it evaporates
Answers
Answer:
It changes from a liquid to a gas. I hope this helps you! :D
Si un átomo tiene 18 electrones, cuántos protones tiene?
Answers
Answer:
huhhhhhhhhj
hshshhshshshshshsh
Sinong pilipino dito kawaykaway naman kayo dyan haha
Answers
Answer:
ako po because I'm pilipino
Explanation:
HAHAH same too
Determine whether the bonds in CCl4 and N2 are polar or non-polar. If the bond is polar, assign the partial positive and negative charges. Electronegativity values: C = 2.5, Cl= 3.0, N= 3.0
Answers
Refer to the attachment
According to the molecular geometry, bonds in carbon tetrachloride are polar and that in nitrogen are non polar.
What is molecular geometry?Molecular geometry can be defined as a three -dimensional arrangement of atoms which constitute the molecule.It includes parameters like bond length,bond angle and torsional angles.
It influences many properties of molecules like reactivity,polarity color,magnetism .The molecular geometry can be determined by various spectroscopic methods and diffraction methods , some of which are infrared,microwave and Raman spectroscopy.
They provide information about geometry by taking into considerations the vibrational and rotational absorbance of a substance.Neutron and electron diffraction techniques provide information about the distance between nuclei and electron density.
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Observe: Turn on Show molecular view, and notice the water molecules. Set the Water volume to 100 mL and the Powder mass to 20 g, and then click Play. Click Pause () after adding the powder. You should now see show some sodium acetate in the water.
What color represents the bonds between the particles of NaC2H3O2?
Click Play. Watch the animation a few times. What happens to the NaC2H3O2 bonds?
What happens to the bonds between water molecules?
Answers
Answer: how old are you
Explanation: