pls help asap!!!!

3 gasses are mixed together (N2, O2, and He). The gauge of the N2 states a pressure of 1.23 atm. The gauge on the O2 tank shows 2.3 atm. The Helium gauge is broken. When the gasses are mixed, the total pressure of the tank is 6.50 atm. What is the pressure of the He?

a) 3.47 atm

b) 2.97 atm

c) 0.435 atm

d) 10.03 atm

Answers

Answer 1

Answer: The pressure of the He is 2.97 atm

Explanation:

According to Dalton's law, the total pressure is the sum of individual pressures.

[tex]p_{total}=p_{N_2}+p_{O_2}+p_{He}.[/tex]

Given : [tex]p_{total}[/tex] =total pressure of gases = 6.50 atm

[tex]p_{N_2}[/tex] = partial pressure of Nitrogen = 1.23 atm

[tex]p_{O_2}[/tex] = partial pressure of oxygen = 2.3 atm

[tex]p_{He}[/tex] = partial pressure of Helium = ?

putting in the values we get:

[tex]6.50atm=1.23atm+2.3atm+p_{He}[/tex]  

[tex]p_{He}=2.97atm[/tex]

The pressure of the He is 2.97 atm


Related Questions

need help to solve it

Answers

Answer:

Divide by the molar mass to get moles

Explanation:

A reaction is expected to produce 28.3 moles of hydrogen gas. If the hydrogen is collected at 297 K and 1.08 atm, what is the volume? 305 L H2 639 L H2 948 L H2 1,240 L H2

Answers

Answer:

The correct answer is 639 L H₂

Explanation:

We use the ideal gas equation:

We have the following data:

n = 28.3 mol

T= 297 K

P= 1.08 atm

R= 0.082 L.atm/K.mol (gas constant)

We introduce the data in the gas equation to calculate the volume (V):

PV=nRT

⇒V =nRT/P = (28.3 mol x 0.082 L.atm/K.mol x 297 K)/(1.08 atm) = 638.2 L ≅ 639 L

Therefore, the correct option is  639 L H₂

Answer:

639 L H2

Explanation:

took the quiz

ur welcome

what happens to the boiling point of hydrocarbon compounds when the number of carbon atom increases

A. Decreases
B. Increases
C. Remains the same
D. None of these

I NEED YOUR ANSWER RN GUYSS PLEASEE​

Answers

The boiling points of alkanes increases with increasing number of carbons. This is because the intermolecular attractive forces, although individually weak, become cumulatively more significant as the number of atoms and electrons in the molecule increases.



So therefore your answer choice will increase. (B)

How to convert celcius to Kelvin?​

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Answer:

temperature

Explanation:

Need help ASAP please and thank you

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The answer is the second choice

is lime flavor ionic or covalent​

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Answer:Calcium carbonate (CaCO3), essentially, is an ionic compound having the bivalent calcium and carbonate ions. But the carbonate anion is a polyatomic species. The carbon atom is bonded to all the three oxygen atoms by covalent bonds - two carbon-oxygen single bonds and one carbon-oxygen double bond.

Explanation:So it's ionic hope this helps u. Btw may i have brainlist plz.

Will mark BRAINLIEST. Molarity
Please no Bs answers. Only going to be reported.

If water is added to 145 mL of a 0.55 M KOH solution until the volume is 250 mL, what will the molarity of the diluted solution be?

What is the molarity of the solution that results from diluting 35.0 ml of a 9.02M solution to a new volume of 45.0 ml?​

Answers

We can use the equation for dilutions that relates concentration and volume:

[tex]M_1V_1=M_2V_2[/tex]

where M is the molarity, V is the volume, and 1 and 2 refer to the initial and final states of the solution, respectively. Here, we are given the molarity of the initial solution and the volumes of the initial and final (diluted) solutions. To find the final concentration (i.e., the molarity of the diluted solution), we would be solving for M₂:

[tex]M_2=\frac{M_1V_1}{V_2} = \frac{(0.55 \text{ M})(145 \text{ mL})}{250 \text{ mL}} \\ M_2 = 0.319 \approx 0.32 \text{ M}.[/tex]

The molarity is given to two significant figures as both our M₁ and V₂ are given to two significant figures.

Note: Although our volumes are in mL instead of L, we do not need to convert them to L for the purposes of our calculation since we would be multiplying our V₁ and V₂ by a common factor that would cancel out in division. All that matters is the ratio between the two volumes, which is the same whether the volumes are in mL or in L.

---

We follow the exact same procedure in the second question as we did in the first problem: solve for M₂ given M₁ = 9.02 M, V₁ = 35.0 mL, and V₂ = 45.0 mL:

[tex]M_2=\frac{M_1V_1}{V_2} = \frac{(9.02 \text{ M})(35.0 \text{ mL})}{45.0 \text{ mL}} \\ M_2 = 7.02 \text{ M}.[/tex]

if answered correctly i will give brainlest​

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Answer: Earthquake location

Explanation:

Answer:

Volcano chains and arcs, and earthquake locations

If Steve throws a football 57 meters in 3 seconds, what is the average speed of the football?​

Answers

Answer:

19 m/s

Explanation:

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Question 1
1. Na2O + H20 --->
NaOH
A. Single Replacement
B. Double Replacement
c. Decomposition
D. Synthesis
E. Combustion

Answers

Answer: D. Synthesis

Explanation:

Sodium Oxide + Water = Sodium Hydroxide

What are the
invisible lines
revealed by the
Iron fillings
surrounding a
magnet called?

Answers

Answer:

At each end of a magnet is a pole. These lines of flux (called a vector field) can not be seen by the naked eye, but they can be seen visually by using iron fillings sprinkled onto a sheet of paper or by using a small compass to trace them out.

hope it's help

#carryONlearning
A magnetic field is the area around a magnet, magnetic object, or an electric charge in which magnetic force is exerted.” ... The invisible area around a magnetic object that can pull another magnetic object toward it or push another magnetic object away from it is called a magnetic field.

What 3 things will you do to dissolve a solid (salt) faster in a liquid (water)

Answers

Answer:

There are three ways to make solids dissolve faster: Break the solute into smaller pieces. Stir the mixture. * Heat the mixture.

Explanation:

Substances can dissolve in water three ways—by dissociation, dispersion, and ionization.

A brick measures 0.018 dam by 6.5 cm by 17.3 cm. What is the volume of the brick in cubic centimeters

Answers

Answer:

volume of brick= length × breadth × height

=0.000018 ×6.5×17.3

=

Is the reaction above a replacement reaction? Explain.

Answers

Replacement I don't see anything

A horse weighs 240 kg. If its running at a speed of 18 m/s, what's the linear momentum of the horse

Answers

Answer: The answer is 4320

Explanation:

I got the answer correct

Which of the following best describes a solution?
a heterogenous compound
a homogenous compound
a homogenous mixture
O O a heterogenous mixture

Answers

Answer:

homogeneous mixture

The answer would be C) Homogeneous mixture

80 ml of carbon monoxide (CO) are reacted with 40 ml of oxygen (O2). What volume of carbon dioxide (CO2) is formed? 2CO + O2 → 2CO2



a. 200 ml


b. 120 ml


c. 80 ml


d. 40 ml

Answers

The volume of carbon dioxide is formed is Option C i.e. 80 ml.

Given that,

80 ml of carbon monoxide (CO) are reacted with 40 ml of oxygen ([tex]O_2[/tex]).

Based on the above information, the calculation is as follows:

Here the volume should be 80ml

Therefore we can conclude that The volume of carbon dioxide is formed is Option C i.e. 80 ml.

Learn more: brainly.com/question/16911495

The mass of a single gold atom is 3.27X10^-22 grams. How many gold Adams with there be in 57.8 mg of gold.

Answers

Answer:

18 * 10^19 atoms

Explanation:

We must first convert 57.8 mg to grams.

If 1000 mg = 1g

  57.8 mg = 57.8/1000 = 57.8 * 10^-3 g

Now;

If 1 gold atom has a mass of 3.27X10^-22 grams

x gold atoms have a mass of 57.8 * 10^-3 g

x = 57.8 * 10^-3 g/3.27X10^-22 g

x = 18 * 10^19 atoms

How to make copper chloride from copper carbonate

Answers

Answer:

Describe how a sample of copper chloride crystals could be made from copper carbonate and dilute hydrochloric acid. Add excess copper carbonate to hydrochloric acid in a beaker, stirring until there is no further reaction. Filter the mixture to remove the remaining copper carbonate, then heat the remaining solution to the point of crystallisation.

Explanation: Hope this is right.

What is the formula for the compound formed by Al3+ and N3- ?



Answers

Answer:

[tex]\boxed {\boxed {\sf AlN}}[/tex]

Explanation:

The goal when forming compounds is to achieve a net charge of 0.

We are given aluminum with a charge of 3+  and nitrogen with a charge of 3-.

These charges are equal and opposite, so one of each will equal 0.

3+ (Al) + 3- (N) = 0

Therefore, we do not need any subscripts. List the metal's symbol (aluminum) then the nonmetal.

AlN

Th formula for the compound, which is aluminum nitride, is AlN.

Use the balanced chemical equation below to answer the following: How many moles of
oxygen are required to react along with 6 moles of butane (C4H10) according to the
following equation? Do not list units in your final answer.
2 C4H10 + 13O2 ------> 8CO2 + 10H2O

Answers

hmm, i not sure i come back later with the answer.


Which of these indicates that a liquid has transferred thermal energy to the air?
O The liquid increases in temperature, and its particles lose kinetic energy
O The liquid decreases in temperature, and its particles gain kinetic energy
O The liquid increases in temperature, and its particles gain kinetic energy.
O The liquid decreases in temperature, and its particles lose kinetic energy
No

Answers

Answer:

The liquid decreases in temperature and its particles lose kinetic energy.

Temperature is proportional to kinetic energy, so if temperature decreases, kinetic energy decreases. Energy has been removed from the liquid, because it is in the air

The liquid decreases in temperature,and its particales lose kinetic energy

Which formula equation represents the burning of sulfur to produce sulfur dioxide?

Answers

Answer

The balanced reaction that describes the reaction between sulfur and oxygen to produce sulfur dioxide is expressed S(s) + O2 (g) = SO2 (g). In many manufacturing plants, sulfur dioxide is furhter reacted to oxygen to form sulfur trioxide then added with water to produce sulfuric acid.

Explanation: The balanced reaction that describes the reaction between sulfur and oxygen to produce sulfur dioxide is expressed S(s) + O2 (g) = SO2 (g).

Answer:

The balanced reaction that describes the reaction between sulfur and oxygen to produce sulfur dioxide is expressed S(s) + O2 (g) = SO2 (g). In many manufacturing plants, sulfur dioxide is further reacted to oxygen to form sulfur trioxide then added with water to produce sulfuric acid.

Which of the following examples best describes an effect of urbanization?

A More land is available in large cities to grow crops.
B Wildlife diversity increases due to more open spaces within the city.
C Emissions from motor vehicles increase smog in the air that can block radiation.
D The greater concentration of people in large cities reduces overall waste production and accumulation on Earth.
please help

Answers

C) Emission from motor vehicles increase smog the air that can block radiation, which makes sense because urbanization means more people in one area=lots of pollution

Emissions from motor vehicles increase smog in the air which can block radiation. Hence, option C is correct.

What does it mean to live in an urban area?

An urban area is a region surrounding a city. Most inhabitants of urban areas have nonagricultural jobs. Urban areas are very developed, meaning there is a density of human structures such as houses, commercial buildings, roads, bridges, and railways. "Urban area" can refer to towns, cities, and suburbs.

Emission from motor vehicles increases smog in the air that can block radiation, which makes sense because urbanization means more people in one area=lots of pollution.

Hence, option C is correct.

Learn more about urbanization here:

brainly.com/question/12007420

#SPJ2

b. What useful functions do oxidation numbers
serve?
20.
b. How many molecules are in 1 mole of
molecules?
c. What is the name given to the number of
molecules in 1 mole?
21. a. What is the molar mass of an element?
b. Write the molar mass rounded to two
decimal places of carbon, neon, iron and
uranium.

Answers

Explanation:

b. What useful functions do oxidation numbers  serve?

It is used to show oxidation and reduction (loss and gain of electrons)

b. How many molecules are in 1 mole of  molecules?

1 mole = 6.022 * 10^23 molecules

c. What is the name given to the number of  molecules in 1 mole?

Avogadro's Number of molecules

21. a. What is the molar mass of an element?

This is the mass of an element divided by the number of moles.

Molar mass = Mass / Number of moles

b. Write the molar mass rounded to two  decimal places of carbon, neon, iron and  uranium.

amu = Atomic Mass Unit

Carbon = 12.01 amu

Neon = 20.18 amu

Iron = 55.85 amu

Uranium = 238.03 amu


which substance will evaporate first???????????????????

Answers

Answer:

I think it would be a liquid.

Explanation:

If the temperature hits a certain point, it will turn to ice. If the ice gets exposed to heat, it will melt and return back to it's natural form, a lqiuid. If the liquid is exposed to enough heat, it will evaporate. Not sure if this is right, but I tried my best!  

Calculate the number of grams of sulfur in 4.52 mol of sulfur.

Answers

The answer is 1.27 grams. 4.52 mol = 1.27 g

If a reaction is endothermic,
1 point
More energy is released when the bonds in the products are formed than is used to
break the bonds in the reactants
The temperature increases
The same amount of energy is used to break the bonds of the reactants as is released
when the bonds in the products are formed
О O
It takes more energy to break the bonds of the reactants than is released when the
bonds in the products are formed

Answers

Answer: It takes more energy to break the bonds of the reactants than is released when the  bonds in the products are formed

Explanation:

Endothermic reactions are defined as the reactions in which energy of the product is greater than the energy of the reactants. The total energy is absorbed in the form of heat. Thus it takes more energy to break the bonds of the reactants than is released when the  bonds in the products are formed

Exothermic reactions are defined as the reactions in which energy of the product is lesser than the energy of the reactants. The total energy is released in the form of heat. Thus More energy is released when the bonds in the products are formed than is used to  break the bonds in the reactants

How many significant digits are in this number?
742800
1.6
2.5
3.4
4.3

Answers

3. There are 4 significant digits. The significant digits are 7428.

Na2SO4
How many oxygen stems are?

Answers

Answer:

Na2SO4 means: two moles sodium (45.98 g), one mole sulfur (32.06 g), and four moles oxygen (64.00 g) combine to form one mole of sodium sulfate (142.04 g).

Explanation:

Answer:

As we can see in the formulae, Na₂SO₄

We can see that 4 is the subscript of O and that means There are 4 atoms of oxygen.

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