Picture of 2010 Todd Abronowitz Gas Laws problems, super fun if you’re in AP chem. Can you help a pre-AP struggling student out please?

Picture Of 2010 Todd Abronowitz Gas Laws Problems, Super Fun If Youre In AP Chem. Can You Help A Pre-AP

Answers

Answer 1

Answer:

1. 0.422 atmospheres

2. 633281.25 Pascals

3. (a) Move up

(b) 868 mmHg

4. 868 mmHg

5. 775 mmHg

6. Partial pressure of He is 0.64 atm.

Partial pressure of oxygen is 1.29 atm.

Partial pressure of N is 2.57 atm.

7. 445.72 torr.

Explanation:

1. To convert 321  torr to atmospheres

1  atmosphere = 760 torr

∴ 1 torr = 1/760 atmospheres

Hence, 321 torr = 321 × 1/760 = 321/760 atmospheres = 0.422 atmospheres

2. To convert 6.25 atmospheres to Pascals, we have;

1 atmosphere = 101325 Pascals

∴ 6.25 atmospheres = 6.25 × 101325 Pascals = 633281.25 Pascals

3. (a) Here we have, given that the value of the pressure on the bottle = 830 mmHg, when the valve is opened, the mercury in the open-end arm will move up because the pressure of the gas inside the flask is more than the pressure on the other side of the open-end arm

(b) After the mercury stops moving the difference between the two columns will be the difference between the two pressures, that is 830 mmHg - 745 mmHg = 85 mmHg

4. From the diagram, it is seen that the differenc beteen the two columns is 123 mm, therefore, the pressure in the flask is 123 mmHg more than the external pressure, hence the pressure of the as in the flask = 745 mmHg + 123 mmHg = 868 mmHg

5. Here we have that the height of the mercury in the open-end is less than the height of the mercury on the arm closer to the flask, therefore, the pressure of the gas in the flask = 825 mmHg - 50 mmHg = 775 mmHg

6. Number of moles of He = 1 mole

Number of moles of oxygen, O = 2 mole

Number of moles of nitrogen, N = 4 mole

From Dalton's law of partial pressure we have that, the total pressure of a given mass of gas is equal to the partial pressure of the individual gases

[tex]That \ is \ \chi _i = \frac{n_i}{n_{total}} \ and \ P_i = \chi_i \cdot P_{total}[/tex]

Hence;

Total number of moles = 1 + 2 + 4 = 7 moles

Mole fraction of He = 1/7

Partial pressure of He = 1/7×4.5 = 0.64 atm.

Mole fraction of oxygen, O = 2/7

Partial pressure of oxygen= 2/7×4.5 = 1.29 atm.

Mole fraction of N = 4/7

Partial pressure of N = 4/7×4.5 = 2.57 atm.

7. From Boyle's law

P₁×V₁ = P₂×V₂

Hence;

P₂ = P₁×V₁/V₂

Where:

P₁ = Initial pressure = 2.57 atm

V₁ = Initial volume =1.57 liters

V₂ = New volume = 6.88 liters

P₂ = New pressure = 2.57×1.57/6.88  = 0.59 atm.

To convert 0.59 atm. to torr, we multiply by 760 thus;

0.59 atm. = 0.59 × 760 torr = 445.72 torr.


Related Questions

A sample of carbon dioxide occupies a volume of 1.50L at 165KPå pressure. What pressure would the gas exert if the volume was increased to
2.5L?

a.0.023 kPa
b. 275 kPa
c. 99 L
d. 99 kPa​

Answers

Answer:

B. 275 kPa

Explanation:

Since we need to find the greater value, because 1.50<2.5, then the only greater value would be 275 kPa.

why do we see only one side of the moon from earth?

Answers

Answer:

The moon's period of rotation and revolution are equal

does gravity affect the orbit of the international space ​

Answers

Answer:

yes

Explanation:gergrgregbfbwerbebw

How many moles of NaCl are contained in 100.0ml of a 0.20m solution

Answers

M= 0.20 M
V= 100.0 ml = 0.100 L
n= ??

M = n/v

:. n = MV

n = 0.20M x 0.1000L

:. n = 0.020 mol

Which of the following human activities can increase the risks of flooding?

Answers

deforestation i hope this helps

Answer:

Deforestation and Cultivation

Explanation:

First I am going to give the definition of deforestation:

Deforestation is basically the removal of trees.

The removal of trees leaves leaves very little vegetative cover to hold heavy rain fall. This is why mudslides and things happen. When the land is clear and flat, the water keeps on going instead of going into the soil. That water that keeps on going is called runoff water. If we planted trees by the rivers, that could take down the height of the floods in towns by 20%

At first I was going to say widening rivers, but that is a way to manage river water. When we lengthen the river, it is so that the water can take more time to reach the river canal.

Definition of Cultivation: The production of food by preparing the land to grow crops (especially on a large scale) animal husbandry - breeding and caring for farm animals. agriculture, tree farming - the cultivation of tree for the production of timber.

I was also going to say Cultivation. Over-cultivation is the excessive use of farmland to the point where productivity falls due to soil exhaustion or land degradation. Now this is actually why we have floods in the USA. The soil cannot soak up any water, therefore the water over flows and that is when a flood starts to happen.

I know this took some time but hope I could help :)

Could somebody answer these questions for me? Thanks!

1. What percentage of the earth is covered by water?

2. What sorts of signals does the brain use to communicate sensations, thoughts and actions?

3. Did dinosaurs and humans ever exist at the same time?

4. What is Darwin's theory of the origin of species?

5. Why does a year consist of 365 days and a day of 24 hours?

Answers

Explanation:

1) %70 earth is water and %30 is land.

2)" The single cells in the brain communicatethrough electrical and chemical signals.

3) b'coz earth revolve around the sun in365 days and rotates on its axis in 24 hours. It takes 365 days , because it takes that much time to complete one revolution and it takes 24 hours,because it takes time to complete one rotation as mercury takes 81 earthdays to complete one revolution.

4) Human originated from Adam And Eve.

Cuando se queman combustibles que tienen algún compuesto de azufre se produce dióxido de azufre (SO2), un gas irritante que puede provocar lluvia ácida. En el análisis del aire de una ciudad se ha encontrado una concentración de SO2 de 14 mg/m^3 ¿Qué cantidad de SO2 habrá en 1 L de aire?

Answers

Answer:

See answer below

Explanation:

I have to answer this question in english because is the rule here. I hope you can understand this.

Now, in order to answer this, is really easy. We already have the quantity of SO₂ in the air of a city. This concentration is 14 mg/m³, so we want to know the quantity in 1 L. This quantity can be expressed in mass.

If concentration according to the units is: mg/m³ This means that we have units of mass and volume. So, in order to know the quantity of SO₂ in mass, we need to convert the units of volume m³ to liter.

1 m³ is covered in 1000 L, therefore:

14 mg/m³ * 1 m³/1000 L = 0.014 mg/L

Then, the mass will be:

m = 0.014 mg/L * 1 L

m = 0.014 mg of SO₂

This is the quantity of SO₂ in 1 L.

1. Why is hot air hot?

Answers

Answer:

Explanation:

Radiation from the sun heats the ground, then the ground heats the air by process of conduction. When that happens air temp. and density start to change causing air convection currents. Hope I help.

can someone Fing answer this PLEASE! NOW
Chemical Reactions Performance Task


Description: A student conducted two different demonstrations in their science class that started with copper chloride (CuCl₂). They have provided you with the following data tables to help you determine if a physical change or chemical reaction occurred during the demonstrations.


Demonstration 1:



Reactants

substances at beginning of reaction

Products

substances at the end of the reaction

Substance

(Chemical Formula)

Copper Chloride

(CuCl₂)

Water

(H₂O)

Copper Chloride

(CuCl₂)

Water

(H₂O)

Properties

Density: 2.51 g/cm³

Melting Point: 100ºC

Boiling Point: 993ºC

Density: 1 g/cm³

Melting Point: 0ºC

Boiling Point: 100ºC

Density: 2.51 g/cm³

Melting Point: 100ºC

Boiling Point: 993ºC

Density: 1 g/cm³

Melting Point: 0ºC

Boiling Point: 100ºC


Based on the patterns (similarities and differences) in the properties of the reactants and products in the table above, is this a physical or chemical reaction? Cite specific evidence from multiple properties in the data table to support your answer. (5pts)

Claim



Evidence



Reasoning





Demonstration 2:



Reactants

substances at beginning of reaction

Products

substances at the end of the reaction

Substance

(Chemical Formula)

Copper Chloride

(CuCl₂)

Iron

(Fe)

Iron Chloride

(FeCl₂)

Copper

(Cu)

Properties

Density: 2.51 g/cm³

Melting Point: 100ºC

Boiling Point: 993ºC

Density: 7.86 g/cm³

Melting Point: 1538ºC

Boiling Point: 2682ºC

Density: 3.16 g/cm³

Melting Point: 677ºC

Boiling Point: 1023ºC

Density: 8.96 g/cm³

Melting Point: 1085ºC

Boiling Point: 2562ºC


Based on the patterns (similarities and differences) in the properties of the reactants and products in the table above, is this a physical or chemical reaction? Cite specific evidence from multiple properties in the table to support your answer. (5pts)

Claim



Evidence



Reasoning





Using the data from Demonstrations 1 and 2, fill out the table below to describe the difference between a physical and chemical reaction in terms of the rearrangement and/or conservation of atoms and molecules. Choose conserved or not conserved for atoms. Choose rearranged or not rearranged for molecules. (4pts)




Physical Changes

Chemical Reactions

Atoms:

(conserved/not conserved)





Molecules

(Rearranged/Not rearranged)

Answers

Answer:

Need to broken down more.

Explanation:

Answer:

its FIND NOT fing

Explanation:

10 mL of 6 M HCL are diluted to 1 L with distilled water. What is the molarity of the dilute solution?

Answers

Answer:

The correct answer is 0.06 M

Explanation:

The concentration of the dilute solution (Cd= dilute concentration) can be calculated from the concentrated solution (Cc) and the volumes (Vi and Vf) as follows:

Cc x Vc = Cd x Vd

Cd = (Cc x Vc)/Vd

We have:

Cc= 6 M

Vc = 10 ml (volume of concentrated solution)

Vd= 1 L= 1000 ml (volume of dilute solution)

⇒Cd= (6 M x 10 ml)/1000 ml

  Cd = 0.06 M

Which phrase provides the best definition of mass movement?

the movement of material caused by erosion
the slow flow of a glacier as it moves through the valley of a mountain
the movement of large amounts of soil and rock debris down a slope
the fast movement of a boulder rolling down a slope

Answers

The movement of large amounts of soil and rock debris down a slope

Answer:

the movement of large amounts of soil and rock debris down a slope

Explanation:

yeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeet

* I’ll give you BRAINLIST * ( have to get it right ) Joshua has learned that the human body is made up of many body systems that work together to function for life. Which of the following does NOT
provide an example of two human body systems working together?

Answers

Answer:

Kidney & lungs

heart & bladder

bladder & lungs

Explanation:

HOPE THIS HELPS

Which of the following is stored in the skeletal system?
A. potassium
B. calcium
phosphorous
D. sodium

Answers

Answer:

b calcium

Explanation:

During light-dependent reactions, carbon dioxide is converted to glucose.

Group of answer choices

True

False

Answers

Answer:The light-independent reactions use the ATP and NADPH from the light-dependent reactions to reduce carbon dioxide and convert the energy to the chemical bond energy in carbohydrates such as glucose.

Explanation:step-by-step

Answer:

FALSE

Explanation:

I just took the test and put true and it was wrong so it's false. Hope this helps and please mark brainliest!

HELP MEHHHHH were does the first stage of cellular respiration occur ?

Answers

Answer:

mitochondria

Explanation:

Cellular respiration occurs primarily in the mitochondria of your cells. The mitochondria is like the powerhouse of cells .

If 23.6 grams of a substance reacts with 42.5 grams of another substance, what would we expect the mass of the products to be after the reaction?

Answers

Answer:

The correct answer is 66.1 g

Explanation:

According to Law of Conservation of the Mass, the mass of an isolated system is neither created or destroyed during chemical reactions. It is transformed. So, in a chemical reaction, the atoms of reactants are reoganizated by forming other compounds but the mass is conserved. Thus, the total mass of reactants is always equal to the total mass of products. If 23.6 g of a substance reacts with 42.5 g of another substance, the total mass of the products will be equal to the total mass of reactants:

23.6 g + 42.5 g = 66.1 g reactants = 66.1 g products

A sample of air has a volume of 140.0 mL at 67C. To w
hat temperature must the gas
be lowered to reduce its volume to 50.0 mL at constant pressure?​

Answers

Answer:

What that means is that when pressure and number of moles are kept constant, increasing the temperature will result in an increase in volume. Likewise, a decrease in temperature will result in a decrease in volume. In your case, the volume of the gas decreased by a factor of about 3, from "140.0 mL" to "50.0 mL".

what percentage of water on earth is fresh water

Answers

Answer:

only 2.5% is fresh water on earth

Answer:

The answer is 3%

Explanation:

An example of a double replacement chemical reaction takes place in batteries. In an alkaline battery, Manganese oxide reacts with water to form a different manganese oxide and hydroxide. Which is the correct balanced equation for this?

Answers

Answer:

2MnO2 + H2O => Mn2O3 + 2OH is the correct balanced equation.

When manganese oxide reacts with water to form a different manganese oxide and hydroxide, the correct balanced equation for this is 2MnO₂ + H₂O ⇾ Mn₂O₃ + 2OH.

What do you mean by balanced chemical equation ?

The term balance chemical equation is define as the equation which satisfy the law of conservation of mass, i.e., “Total mass of the products is equal to the total mass of all the reactants”.

If a chemical equation is not balanced, it will break the law of conservation of mass. It will indicate that either mass is created or destroyed, which is impossible.

Balanced chemical equations have the equal number and type of each atom on both sides of the equation.  

Thus, When manganese oxide reacts with water to produce a different manganese oxide and hydroxide, the correct balanced equation for this reaction is 2MnO₂ + H₂O ⇾ Mn₂O₃ + 2OH.

To learn more about the balanced chemical equation, follow the link;

https://brainly.com/question/28294176

#SPJ2

Does anyone know how to solve this

Answers

Answer:

Beta

Explanation:

Beta has signal 0 above and -1 under

Temperature and volume are
_____ related, which means as temperature______
the volume decreases.

Answers

Answer:

They are directly related.

Temp decrease then volume decrease

Temp increase then volume increase

when does thermal energy stop moving

Answers

Answer:

at absolute zero.

Explanation:

absolute zero or 0 kelvin, is where all kinetic movement of electrons ceases in a molecule.

Which statement best describes the difference between nuclear fission and nuclear fusion reactions?

Answers

Answer:

They are both nuclear reactions that produce energy.

Fission is the splitting of heavy, unstable nucleus into two lighter nuclei.Fusion is the process where two light nuclei combine together (this process releases a vast amount of energy)

Both fission and fusion are nuclear reactions that produce energy, but the applications are not the same. Fission is the splitting of a heavy, unstable nucleus into two lighter nuclei, and fusion is the process where two light nuclei combine together releasing vast amounts of energy

A sample of water is heated from 10.0 degrees Celcius to 15.0 degrees Celcius by the addition of 125 Joules of heat. What is the mass of the water?

Answers

Answer:

125 = 5*4.186*m

m = 125 / 5*4.186 = 5.97g of water.

Explanation:

The water is increased by 5 degrees. This means that for every gram of water, it takes 5*4.186 J to increase the temperature by 5 degrees, aka 5*4.186 J/g

hope this help:)

Explain why matter takes space

Answers

Due to the exclusion principle and other fundamental interactions, some "point particles" known as fermions (quarks, leptons), and many composites and atoms

What is the solvent in blood?

Answers

Answer:

Water serves to suspend the red blood cells to carry oxygen to the cells. It is the solvent for the electrolytes and nutrients needed by the cells, and also the solvent to carry waste material away from the cells. With water as the solvent, osmotic pressure acts to transport the needed water into cells.

Explanation:

In the following reaction 6.13g of water (H,O) is produced the theoretical
yield of water (H,O) is 8.17g, what is the percent yield of water?*
C3H8+ 5 O2 → 3 CO2 + 4 H2O
85.0%
72.0%
75.0%
0 67.0%

Answers

The answer 75.0 fam good luck

what is the mass of 7.525 x10^24 particles of sulfur difluoride SF2?

Answers

Answer:

Mass will be equal to 874.56 gram

Explanation:

Molar mass of sulfur = 32 u

Molar mass of Florine = 19 u

Therefore molar mass of [tex]SF_2[/tex] [tex]=32+2\times 19=70u[/tex]

So mass of [tex]6.023\times 10^{23}[/tex] particle is 70 gram

Therefore mass of 1 particle

[tex]=\frac{70}{6.023\times 10^{23}}=11.62\times 10^{-23}g[/tex]

Therefore mass of [tex]7.525\times 10^{24}[/tex] particle is

[tex]7.525\times 10^{24}\times 11.62\times 10^{-23}=874.56gram[/tex]

A chemistry student mixes 25 milliliters of 3.0 M hydrochloric acid (HCl) with excess sodium hydroxide. The chemicals react according to this chemical equation:

HCl + NaOH → NaCl + H2O.

If the volume of the resulting solution is 68 milliliters, what is the concentration of sodium chloride?

Answers

Answer:

1.1 mol/liter

Explanation:

You would use the M1V1 = M2V2 equation to solve this.

We know M1 is 3.0 M, V1 is 25 milliliters, and V2 is 68 milliliters. We need to find M2.

To find M2, first plug in what you know.

(3.0 M)(25 mL) = M2(68 mL)

Then, divide everything by 68 mL to get M2 by itself

Your answer should be a quite large decimal but I rounded it to 1.1 mol/liter.

Answer:

The concentration of sodium chloride is 1.1 moles/liter.

Explanation:

which term names a small icy object that orbits the sun?

Answers

Answer:

It a comet

Explanation:

that why they are also called dirty snowballs

Answer:

A comment

Explanation:

Because I took the test and that 100 and because comets are icy and sometimes lead tale of water droplets behind them

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