Answer: 1.25.173.
Explanation:just caluate
URGENT (will give brainliest)
The overall energy change for the combustion of one mole of methane according to given chemical equation is 2648 kJ/mole.
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
The combustion involves reactants that is 413×4 +498×2=2648 kJ.
Thus, overall energy change for the combustion of one mole of methane according to given chemical equation is 2648 kJ/mole.
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Find the ion symbol for the atom and its charge
Answer:
Oxygen 17 isotope with neutral charge
Explanation:
The atom has 8 red protons and 8 black electrons so it is neutral. Since it has 8 protons, it has atomic number of 8, which is oxygen (O).
There are 9 blue neutrons. The mass number = #protons + #neutron = 8 + 9 = 17. Therefore it is the oxygen 17 isotope.
I have 1.4 moles of a gas at a pressure of 4.7 atm and a volume of 23 liters, what is the temperature in Kelvin?
6 mol of KClO3 decomposes. How many mass of O2 will be produced? [8pts]
KClO3 → KCl + O2
6 mol of KClO3 will produce 288 grams of O2, when 6 mol of KClO3 decomposes.
How to calculate mass of O2 for this problem?
The balanced chemical equation for KClO3 decomposition is:
2 KClO3 →
2 KCl + 3 O2
According to the equation, 2 moles of KClO3 produce 3 moles of O2.
Therefore, 6 moles of KClO3 will produce (6/2) x 3 = 9 moles of O2.
To calculate the mass of O2 produced, we need to use the molar mass of O2, which is approximately 32 g/mol.
So, the mass of O2 produced will be:
mass = number of moles x (molar mass)
mass = 9 mol x 32 g/mol
mass = 288 g
Therefore, 6 mol of KClO3 will produce 288 grams of O2.
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If a solid dissolves in a liquid. Sedimentation and decantation method cannot be used. Why?
Explanation:
Sedimentation and decantation are separation techniques that rely on the differences in densities of the solid and liquid components. In the case of a solid dissolving in a liquid, the solid particles become uniformly dispersed throughout the liquid, forming a homogeneous mixture.
Since the solid particles are not settling down due to gravity and instead are evenly distributed throughout the liquid, sedimentation cannot be used to separate the solid from the liquid. Similarly, decantation, which involves pouring off the liquid while leaving the settled solid behind, is not applicable because there is no settled solid.
To separate a dissolved solid from a liquid, other separation techniques such as filtration or evaporation may be used. Filtration involves passing the mixture through a filter medium that retains the solid particles while allowing the liquid to pass through. Evaporation involves heating the mixture to vaporize the liquid component, leaving the solid behind.
2. When administering an oral liquid to a patient what PPE is required?
Single chemo-therapy gloves
Double chemo-therapy gloves
Protective gown
Respiratory protection
Double chemo-therapy gloves and Protective gown
Answer:
Among the options you provided, the correct answer would be Double chemo-therapy gloves and Protective gown, as administering oral liquid to a patient carries a risk of splashing or splattering, and healthcare workers may want to avoid any contact with the patient's body fluids or the medication. However, it is important to note that this may depend on the specific policies and regulations in the healthcare setting, and healthcare workers should always follow the appropriate protocols and guidelines. Respiratory protection is not typically necessary for administering oral liquid. Single chemo-therapy gloves may be used for standard precautions, but the use of double gloves may provide additional protection.
Explanation:
Greg's doctor has ordered a PET scan of his heart. In radiological imaging such as PET or CT scans, dosages of pharmaceuticals are based on body mass. If Greg weighs 216-lb, what is his body mass in grams? Please make sure to include the correct unit symbol with the answer choice.
The doctor would then be aware of Greg's weight of 108.6 kg.
What safety measures are necessary for a PET-CT scan?Typically, you won't be allowed to eat or drink for six hours prior to the procedure, although you can drink water. Moreover, you should refrain from intense activity for 24 hours before to your consultation. It's wise to dress comfortably and loosely.
What distinguishes a CT scan from a PET-CT scan?The internal organs and tissues of your body are depicted in great detail by a CT scan. A PET scan can be more sensitive than other imaging procedures and can detect aberrant activity. Also, it can cause your body to alter sooner. PET-CT scans are used by doctors to reveal more details about the cancer.
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CAN SOMEONE HELP WITH THESE QUESTIONS?✨
Hello there! Here are the answers you're looking for!
1: displacement reaction
2: (I can't really answer this one for you because i don't know what the items you used in your lab were, But ill just say Highly Toxic Chemicals)
3: a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
4: (same thing here, i don't know what your lab was about! So i cant answer how it was used here.)
Sorry, i could not answer 2 of them, But hopefully, you get a good grade! Hope this helps!!
Which of the following isotopes contains the same number of protons as 23Na+? And why
23Na
22Na
24Mg
24Al-
Answer:
23Na
Explanation:
23Na+ has 11 protons since the atomic number of sodium (Na) is 11.
Therefore, the isotope that contains the same number of protons as 23Na+ is 23Na itself.
22Na has 10 protons, 24Mg has 12 protons, and 24Al- has 13 protons. Therefore, they dont contain the same number of protons as 23Na+.
Consider the following reaction.
2NO2(g)⇌N2O4(g)
When the system is at equilibrium, it contains NO2
at a pressure of 0.716 atm
, and N2O4
at a pressure of 0.0513 atm
. The volume of the container is then reduced to half its original volume. What is the pressure of each gas after equilibrium is reestablished?
The pressure of NO2 after equilibrium is re-established is 1.432 atm and that of N2O4 is 0.1026 atm.
How do you calculate the pressure of each gas after equilibrium is reestablished?Writing the equilibrium expression for the specified reaction is the first step.
Kp is equal to (P(N2O4))²/(P(NO2))²
Next, using the partial pressures of NO2 and N2O4 at equilibrium provided, we must determine the value of the equilibrium constant Kp.
Kp = (0.0513)2 / (0.716)2 = 0.00201
The new equilibrium partial pressures of NO2 and N2O4 are P'(NO2) and P'(N2O4), respectively. Then:
P'(NO2)=2 x 0.716 = 1.432 atm
P'(N2O4) is equal to two times 0.0513 atm.
Last but not least, we may determine whether the new equilibrium partial pressures satisfy the expression for the equilibrium constant:
Kp = (P'(N2O4))²/ (P'(NO2)² = (0.1026) (0.1026)² / (1.432) (1.432)² = 0.00201
As a result, when equilibrium is restored, the pressures of NO2 and N2O4 are both 1.432 atm for NO2 and 0.1026 atm for N2O4, respectively.
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When 33 g of a metal at 89 ◦C is added to
43 g of water at 21 ◦C, the temperature of the
water rises to 30 ◦C. What is the specific heat
capacity of the metal? Assume no heat was
lost to the surroundings.
Answer in units of J
g ·
◦C
To get a positive specific heat capacity, we would need to reverse the sign of ΔT1. However, the magnitude of c would still be the same. Therefore, the specific heat capacity of the metal is 0.137 J/(g·◦C).
What is specific heat capacity?Specific heat capacity is the amount of heat energy required to raise the temperature of one unit of mass of a substance by one degree Celsius (or one Kelvin). It is a property that describes how much heat energy a material can absorb or release when its temperature changes.
The specific heat capacity of a substance depends on its chemical composition and physical state.
Assuming that no heat is lost to the surroundings, we can write:
heat gained by metal = heat lost by water
The heat gained by the metal can be calculated as:
q1 = mcΔT1
where m is the mass of the metal, c is its specific heat capacity (which we need to find), and ΔT1 is the change in temperature of the metal.
The heat lost by the water can be calculated as:
q2 = mcΔT2
where m is the mass of the water, c is the specific heat capacity of water (which is 4.184 J/(g·◦C)), and ΔT2 is the change in temperature of the water.
We know the initial and final temperatures of the metal and water, so we can calculate the changes in temperature:
ΔT1 = (30 ◦C) - (89 ◦C) = -59 ◦C
ΔT2 = (30 ◦C) - (21 ◦C) = 9 ◦C
We also know the masses of the metal and water:
m1 = 33 g
m2 = 43 g
Using the law of conservation of energy, we can set q1 equal to q2 and solve for c:
mcΔT1 = mcΔT2
c = (m2/m1) * (ΔT2/ΔT1) * 4.184 J/(g·◦C)
Plugging in the given values, we get:
c = (43 g / 33 g) * (9 ◦C / -59 ◦C) * 4.184 J/(g·◦C)
c = -0.137 J/(g·◦C)
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Which is made by weathering?
Question 5 options:
sediments
ash
magma
minerals
Answer: sediments
Explanation: Weathering of volcanic ash and pumice is unique regarding minerals formed and mineral formation. These minerals include allophane, imogolite, opaline silica, and some halloysites, and have distinctive structures and properties. Mar 10, 1987
Erosion and weathering transform boulders and even mountains into sediments, such as sand or mud. A dissolution is a form of weathering—chemical weathering. With this process, water that is slightly acidic slowly wears away the stone. These three processes create the raw materials for new, sedimentary rocks.
Which one is a molecular formula Na2SO4, C6H5Cl, N2O4, Sn3(PO4)4
Answer:
The molecular formula is Sn3(PO4)4.
Explanation:
The molecular formulas are:
Na2SO4: Sodium sulfate
C6H5Cl: Chlorobenzene
N2O4: Dinitrogen tetroxide
Sn3(PO4)4: Tin(IV) phosphate
These are all chemical compounds represented by their molecular formulas.
Can someone please help with these multiple choice questions?
1) It would be a supercritical fluid
2) The approximate rate constant is 0.5 Ms-1
3) Can not be deduced from the graph alone
4) The threshold energy is A
5) rate = k[A]^2 [B]^2
What is the supercritical fluid?A supercritical fluid is a substance that is heated and pressurized to a point where it exists in a state that is intermediate between a gas and a liquid. This state is known as the supercritical state.
Supercritical fluids have properties of both gases and liquids. Like gases, they can expand to fill their containers, but like liquids, they have a high density and can dissolve other substances. In the supercritical state, the fluid has a higher density and viscosity than a gas, but a lower density and viscosity than a liquid.
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Suppose that Daniel has a 3.00
L bottle that contains a mixture of O2
, N2
, and CO2
under a total pressure of 4.90
atm. He knows that the mixture contains 0.270
mol N2
and that the partial pressure of CO2
is 0.250
atm. If the temperature is 273
K, what is the partial pressure of O2
?
Answer:
To solve this problem, we can use the equation for the ideal gas law:
PV = nRT
where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.
First, we need to find the total number of moles of gas in the bottle. We know that the bottle contains 0.270 mol of N2, and we can find the number of moles of CO2 by using the partial pressure and the total pressure:
P(CO2) / P(total) = n(CO2) / n(total)
0.250 atm / 4.90 atm = n(CO2) / n(total)
n(CO2) = 0.0128 mol
The total number of moles is then:
n(total) = n(O2) + n(N2) + n(CO2) = n(N2) + n(CO2) + n(O2) = 0.270 mol + 0.0128 mol + n(O2)
n(total) = 0.2828 mol + n(O2)
Next, we can use the ideal gas law to find the number of moles of O2:
PV = nRT
n(O2) = PV / RT
We can rearrange this equation to solve for P(O2):
P(O2) = n(O2)RT / V
We know that R = 0.08206 L·atm/mol·K and T = 273 K. We also know that P(total) = 4.90 atm, and we can find the volume of the bottle by using the given information that it contains 3.00 L:
n(O2) = P(O2) V / RT
0.2828 mol + n(O2) = P(O2) (3.00 L) / (0.08206 L·atm/mol·K) (273 K)
0.2828 mol + n(O2) = 35.75 P(O2)
We can use the information that the partial pressure of CO2 is 0.250 atm to find the partial pressure of N2:
P(N2) = P(total) - P(O2) - P(CO2) = 4.90 atm - P(O2) - 0.250 atm
P(N2) = 4.65 atm - P(O2)
Finally, we can use the fact that the total pressure is the sum of the partial pressures to find P(O2):
P(total) = P(O2) + P(N2) + P(CO2)
4.90 atm = P(O2) + (4.65 atm - P(O2)) + 0.250 atm
4.90 atm = 4.90 atm
Solving for P(O2), we get:
P(O2) = 0.990 atm
Therefore, the partial pressure of O2 is 0.990 atm.
What is the de Broglie wavelength (in m) of a 0.053 g object moving at a speed of 0.16 m/s?
Answer:
The equation gives the de Broglie wavelength of an object:
λ = h / p
Where λ is the de Broglie wavelength, h is Planck's constant (6.626 x 10^-34 J s), and p is the object's momentum.
The momentum of an object can be calculated using the equation:
p = m * v
Where m is the mass of the object and v is its velocity.
In this case, the mass of the object is 0.053 g, which is equivalent to 0.053 x 10^-3 kg. The velocity of the object is 0.16 m/s. So, the momentum of the object is:
p = (0.053 x 10^-3 kg) * (0.16 m/s) = 8.48 x 10^-6 kg m/s
Substituting this value of momentum and Planck's constant into the de Broglie wavelength equation, we get:
λ = (6.626 x 10^-34 J s) / (8.48 x 10^-6 kg m/s)
Simplifying, we get:
λ = 7.82 x 10^-28 m
Therefore, the de Broglie wavelength of a 0.053 g object moving at a speed of 0.16 m/s is 7.82 x 10^-28 m.
Explanation:
Conclusion Using complete sentences, write a conclusion that addresses the following: • The purpose of the lab, what you explored, what you learned • An explanation of how percent yield can be affected during experimentation • A description of the sources of errors that impacted your data measurements
The purpose of this lab was to explore the concept of percent yield and to determine how it can be affected during experimentation. We learned that percent yield is the ratio of the actual yield of a product.
What is ratio?Ratio is a mathematical comparison of two related values or quantities. It is expressed as a fractional relationship, such as "2 to 4," "1:4," or "2/4." In mathematics, ratios are used to make comparisons between two or more quantities. Ratios can be used to measure how one quantity is related to another, or to compare two or more items. For example, if a person weighs 120 pounds and their height is 5 feet, the ratio of their weight to their height is 120:5 or 24:1. Ratios can also be used to compare items in different categories, such as the number of people in a group to the number of cars they own, or the number of apples to oranges in a basket.
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Which statement is completely accurate?
Responses
Atoms of the same element always have different atomic weights.
Atoms of the same element always have different atomic weights.
Atoms of the same element can have neutrons but exist without protons.
Atoms of the same element can have neutrons but exist without protons.
Atoms of the same element always have different numbers of neutrons.
Atoms of the same element always have different numbers of neutrons.
Atoms of the same element can have different numbers of neutrons.
Answer:
Atoms of the same element can have different numbers of neutrons.
Explanation:
This statement is true because atoms of the same element have the same number of protons, which determines the element's atomic number. However, they can have different numbers of neutrons, which gives rise to different isotopes of that element. These isotopes have the same number of protons, but different numbers of neutrons, leading to different atomic weights. So, while the number of protons is fixed for a particular element, the number of neutrons can vary.
Type at least 3 adaptions they have and explain how these adaptions help them survive in their environments
White-tailed deer have eyes on the sides of their heads. This provides them with a broad range of view for identifying predators.
What is adaptation?Adaptation has three meanings in biology. For starters, natural selection is a dynamic evolutionary process that adapts organisms towards their environment, increasing their evolutionary fitness.
Second, it is a condition attained by the population as a result of that process. The fawns depend on their behavioral and physical adaptations to survive their first few weeks. White-tailed deer are quick and nimble. White-tailed deer have eyes on the sides of their heads. This provides them with a broad range of view for identifying predators.
Therefore, white-tailed deer have eyes on the sides of their heads. This provides them with a broad range of view for identifying predators.
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What Mass of h20 reacted?
The mass of water reacted is 17.67g.
What is STP?STP stands for standard temperature and pressure. STP refers to a specific pressure and temperature used to report on the properties of matter.
According to IUPAC( International Union of Pure and Applied Chemistry), it is defined as -
Temperature of 0 degree celsius (273K)Pressure of 1 atmIt is generally needed to test and compare physical and chemical processes where temperature and pressure plays an important role as they keep on varying from one place to another.
One mole of a gas under STP conditions occupies a volume of 22.4L.
Given,
Volume of oxygen = 11L
Since 1 mole of a gas occupies 22.4 L of volume at STP.
Moles of oxygen produced = 11 ÷ 22.4
= 0.49 moles
From the reaction,
1 mole of oxygen is produced by 2 moles of water.
Thus, 0.49 moles of oxygen is produced by 0.49 × 2 moles of water
So, moles of water = 0.98 moles
mass = moles × molar mass
= 0.98 × 18
= 17.67g
Therefore, mass of water reacted is 17.67g.
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Answer the following:
IV. a. C₂H₂
b. C₂H₄
V. a. C₅H₄
b. C₆H₆
VI.
a. Reactants: Na₂SO₄(aq) + Ca(NO₃)₂(aq) Products: CaSO₄(s) + 2NaNO₃(aq). Type of reaction: Double displacement or precipitation reaction.
b. Reactants: Mg(s) + N₂(g) Products: Mg₃N₂(s). Type of reaction: Synthesis reaction.
VII.
a. 2Hg(NO₃)₂(s) → 2Hg(l) + 2NO₂(g) + O₂(g)
b. Ca₃(PO₄)2(aq) + 6H₃PO₄(aq) → 3Ca(H₃PO₄)₂(aq)
c. 3NaOH(aq) + FeCl₃(aq) → Fe(OH)₃(s) + 3NaCl(aq)
What is the chemical equation about?In part IV, we were asked to write the molecular formula of given compounds based on the given elemental components. For example, acetylene is composed of 2 carbon atoms and 2 hydrogen atoms, so its molecular formula is C₂H₂. Similarly, ethylene has 2 carbon atoms and 4 hydrogen atoms, so its molecular formula is C₂H₄.
Lastly, In part VII, we were asked to balance given chemical reactions. Balancing a chemical equation involves adjusting the coefficients in front of the reactants and products to ensure that the number of atoms of each element is equal on both sides of the equation. For example, in the reaction where solid mercury (II) nitrate is heated to produce liquid mercury, nitrogen gas, and oxygen gas, the balanced equation is 2Hg(NO₃)₂(s) → 2Hg(l) + 2NO₂(g) + O₂(g). Also, we can balance the other two equations given in part VII by adjusting the coefficients.
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Which statement describes how using solar panels on a large scale to obtain energy can negatively impact the environment
The solar energy is a massive source of energy which can generate electricity and reduce the global warming emissions. But the set up of solar panels have both positives and negatives.
What are the negative impacts of solar panels?The manufacturing process of solar panels requires hazardous chemicals and materials for cleaning the semiconductors. The chemicals include hydrofluoric acid, sulfuric acid, etc.
In addition to the release of these chemicals, the solar panel manufactures inhale silicon dust which threatens the public health. The solar energy systems require a large area of land which can lead to the loss of wildlife habitats.
The construction of solar panels also affect soil compaction and erosion.
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How many grams of Na form when 100.0 grams NaN3 react ?
Answer:
35.4g
Explanation:
Na = 23 g/mol
NaN3 = 23 + 3(14) = 65 g/mol
2NaN3 -> 3N2 + 2Na
=> 2 moles of NaN3 will produce 2 moles of Na
or 1 mole of NaN3 will produce 1 mole of Na
the moles of NaN3 with mass of 100.0 g is 100/65 moles
so mass of Na is: (100/65) x 23 = 35.38 or 35.4g
what is the mass of mercury produced from the decomposition of 1.25g of orange mercury(II) oxide?
The mass of mercury produced when 1.25g of mercury(II) oxide (HgO) is decomposed will be 1.247 g.
What is decomposition?Decomposition means to break up into component parts by chemical activity. Chemical decomposition, also known as chemical breakdown, is the activity of breaking down a single chemical entity (such as a regular molecule, reaction intermediate, etc.) into two or more pieces.
The precise opposite of chemical synthesis is often understood and characterized as chemical breakdown.
The reaction for the given question is:
2 HgO(s) → 2 Hg(l) + O₂(g)
Molar mass of Hg = 200.59 g/mol
Given, mass of HgO = 1.25g
Thus, moles of Hg = 1.25 g / 200.59 g/mol = 0.006225 mol
Therefore, mass of mercury produced from HgO by decomposition = 0.006225 mol × 200.59 g/mol = 1.247 g.
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Based on the balanced chemical equation, 2Al(s) + 3H₂SO4(aq) -> Al2(SO4)3(aq) + 3H2(g), how much 4.00 M sulfuric acid is needed to produce 2 moles of aluminum sulfate?
Aluminum sulfate is very non-toxic, having acute and chronic oral LD50 values above 5,000mg/kg (5). Alum, on the other hand, can cause irritation, burns, and breathing problems.
What is Aluminium sulfate used for?
Aluminum sulfate is a crystalline (sand-like) solid that is odorless, white or colorless. It is utilized in sewage treatment, water purification, paper production, and leather tanning. Aluminum sulfate is also known as alum or papermaker's alum; however, the term "alum" refers to any double sulfate salt having the general formula XAl(SO4)212H2O, where X is a monovalent cation such as potassium or ammonium (5).
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How many formula units make up 13.8 g of magnesium chloride ( MgCl2 )?
13.8 g of magnesium chloride is equal to 8.73 x 10 22 formula units ( MgCl2 ). chlorhydrate of magnesium. a two-chloride ion and one magnesium-based inorganic molecule.
Why is magnesium chloride useful?This drug is a mineral supplement used to prevent and cure low levels of magnesium in the blood. Certain brands are also used to treat symptoms of too much stomach acid, including indigestion, heartburn, and stomach discomfort.
What does the mineral magnesium chloride do in food?Chloride of magnesium
It serves as a crucial coagulant in the production of tofu, soy, drinks, and infant formula milk. Magnesium chloride is also employed in the brewing of beer as a taste ingredient and in food coloring.
MgCl2 mass = 13.8 g
Molar mass of MgCl2 = 95.2 g/mol
Number of moles of MgCl2 = ( mass of MgCl2 / Molar mass of MgCl2)
= ( 13.8g ) / ( 95.2g/mol) = 0.14496 mol
Number of MgCl2 moleucles ( or number of formula units) = Moles of MgCl2 x avagadro number
= 0.14496 mol x 6.022 x 10^ 23
= 8.73 x 10^ 22
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CO(g) + Cl₂ (g) = COCh₂2 (g)
If Ke 5.0 at 600 K for this reaction, what are the equilibrium partial pressures of the three gases
if a reaction vessel initially contains a mixture of the reactants in which Pco = Pc2=0.265 atm
and there is no COCl₂?
At chemical equilibrium, the partial pressure of the three gases is 0.265 atmospheres.
What is chemical equilibrium?Chemical equilibrium is defined as the condition which arises during the course of a reversible chemical reaction with no net change in amount of reactants and products.A reversible chemical reaction is the one wherein the products as soon as they are formed react together to produce back the reactants.
At equilibrium, the two opposing reactions which take place take place at equal rates and there is no net change in amount of the substances which are involved in the chemical reaction.At equilibrium, the reaction is considered to be complete . Conditions which are required for equilibrium are given by quantitative formulation.
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Count the atoms of 2 (NH4)2Cr2O7
The formula for ammonium dichromate is (NH4)2Cr2O7. The number of atoms in this compound is 36 .
What is atom?
An atom is the basic unit of matter. It is the smallest particle of an element that retains the chemical properties of that element. Atoms are made up of three types of particles: protons, neutrons, and electrons. Protons and neutrons are located in the nucleus of the atom, while electrons orbit around the nucleus in shells or energy levels. The number of protons in an atom's nucleus determines the element it represents. Atoms can combine with other atoms to form molecules, which make up all the matter in the universe. The study of atoms and their behavior is known as atomic physics or atomic chemistry.
The formula for ammonium dichromate is (NH4)2Cr2O7. To count the number of atoms in this compound, we need to first determine the number of atoms for each element present in the compound and then multiply those values by their respective coefficients:
There are 2 nitrogen atoms (N) for each ammonium ion, so there are a total of 2 x 2 = 4 nitrogen atoms.
There are 8 hydrogen atoms (H) for each ammonium ion, so there are a total of 8 x 2 = 16 hydrogen atoms.
There are 2 chromium atoms (Cr) in the compound.
There are 7 oxygen atoms (O) for each dichromate ion, so there are a total of 7 x 2 = 14 oxygen atoms.
Therefore, the total number of atoms in (NH4)2Cr2O7 is:
4 nitrogen atoms + 16 hydrogen atoms + 2 chromium atoms + 14 oxygen atoms = 36 atoms
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a tiger with a mass of 31kg is running to the east with a velocity of 15m/s. Find the momentum of the tiger
When a tiger with a mass of 31kg is running to the east with a velocity of 15m/s, the momentum of the tiger is 465kg-m/s.
What is momentum?
3 words that are used to define momentum is "Mass in motion". If an object is moving, then it has momentum because all the objects have particular masses, those will be then called as masses in motion. Linear momentum is denoted by P. Mathematically, it is represented as-
P = m × v
where m = mass of the object
v = velocity of the object in a particular direction
Momentum that is involved with circular motion is called as Angular momentum.
Given,
mass of a tiger = 31kg
velocity of tiger = 15m/s
Momentum = p = 31 × 15 = 465kg-m/s
Therefore, when a tiger with a mass of 31kg is running to the east with a velocity of 15m/s, the momentum of the tiger is 465kg-m/s.
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Question 8 (2 points)
A gas occupies 50.5 mL at 72 degrees Celcius and 3 atm. Find the new volume of this gas at 5 degrees Celcius and 2 atm.
Ex: 92 cm
The 25 is the new volume of this gas at 5 degrees Celcius and 2 atm.
What is temperature ?
Temperature is a unit used to represent how hot or cold something is. It can be stated using the Celsius or Fahrenheit scales, among others. Temperature shows which way heat energy will naturally flow, i.e., from a hotter (body with a higher temperature) to a colder (body with a lower temperature) (one at a lower temperature).
What is volume ?
Space is occupied by every three-dimensional object. Its volume serves as a gauge for this area. The area contained by an object's limits in three-dimensional space is referred to as its volume. Another name for it is an object's capacity.
Therefore, 25 is the new volume of this gas at 5 degrees Celcius and 2 atm.
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