Can anyone help me with my chemistry problems? I would REALLY appreciate it!

Question

jayfafr · Answer

sure screenshot?

xxxKrisxxx · Answer

@jayfafr wrote:

sure screenshot?

Yea hold on, I have a few....But I've been stuck on this quiz for a few hours

jayfafr · Answer

alr just tag me when your done it

xxxKrisxxx · Answer

Okay I hope 4 is okay? @jayfafr

xxxKrisxxx · Answer

It's college chemistry....

jayfafr · Answer

yea chem isnt really my strong suit but i can try to figure it out

jayfafr · Answer

gimme a sec

xxxKrisxxx · Answer

Anything helps! Thank you

jayfafr · Answer

ok so the first one

jayfafr · Answer

To find the pressure to which the volume of air must be compressed, we can use the ideal gas law, which states:

jayfafr · Answer

Pv=nRT

jayfafr · Answer

P is the pressure of the gas (in atmospheres)

jayfafr · Answer

V is is the volume of the gas (in liters),

jayfafr · Answer

omg my brain

jayfafr · Answer

ok im sure its 2.30 atm

xxxKrisxxx · Answer

Trust me I know it's hard and I'm sorry, thank you! You don't have to do all if you don't want! Any is great!

jayfafr · Answer

oh im going to its just im helping other people rn

xxxKrisxxx · Answer

@jayfafr wrote:

oh im going to its just im helping other people rn

That's nice of you

jayfafr · Answer

im just gonna give you the answers if your fine with tht?

jayfafr · Answer

8.4 atm or more spefic is 8.438 atm

jayfafr · Answer

thats for the second one

xxxKrisxxx · Answer

I'm totally fine with just the answers! Thank you again

jayfafr · Answer

np ok for the 3rd one

jayfafr · Answer

can you copy and paste it?😭

jayfafr · Answer

or the last two

WSP6969 · Answer

ofc jayden is helpin 😭😭

xxxKrisxxx · Answer

@jayfafr wrote:

can you copy and paste it?😭

Okay I'll try to

xxxKrisxxx · Answer

You mean the questions right?

xxxKrisxxx · Answer

Dinitrogen difluoride gas is collected at -4.0 degrees Celsius in an evacuated flask with a measured volume of 45.0 L. When all the gas has been collected, the pressure in the flask is measured to be 0.200 atm.
Calculate the mass and number of moles of dinitrogen difluoride gas that were collected. Round your answer to 3 significant digits.

Mass:
Mole:

xxxKrisxxx · Answer

Some N2 gas is mixed with some O2 gas, and the sketch below shows a representative sample of the mixture. The total pressure of the mixture is measured, and found to be 1050. torr.

key		
	carbon			hydrogen
	nitrogen			sulfur
	oxygen			chlorine
Calculate the mole fraction and partial pressure of each gas in this mixture. Round your answers to 4 significant digits. You may assume each gas behaves as an ideal gas.

xxxKrisxxx · Answer

attachment

jayfafr · Answer

@xxxkrisxxx wrote:

Dinitrogen difluoride gas is collected at -4.0 degrees Celsius in an evacuated flask with a measured volume of 45.0 L. When all the gas has been collected, the pressure in the flask is measured to be 0.200 atm. Calculate the mass and number of moles of dinitrogen difluoride gas that were collected. Round your answer to 3 significant digits. Mass: Mole:

this one is mass=26.8 g moles=0.406 mol

xxxKrisxxx · Answer

Wish I could like all of your responses

jayfafr · Answer

yea i gotta give u a direct answer my brain fried rn😭

xxxKrisxxx · Answer

@jayfafr wrote:

yea i gotta give u a direct answer my brain fried rn😭

You're totally fine! I'm sorry your brain is going through it

jayfafr · Answer

@xxxkrisxxx wrote:

Some N2 gas is mixed with some O2 gas, and the sketch below shows a representative sample of the mixture. The total pressure of the mixture is measured, and found to be 1050. torr. key carbon hydrogen nitrogen sulfur oxygen chlorine Calculate the mole fraction and partial pressure of each gas in this mixture. Round your answers to 4 significant digits. You may assume each gas behaves as an ideal gas.

for this can you give me the proportions or mole fractions of nitrogen and oxygen

xxxKrisxxx · Answer

@jayfafr wrote:

@xxxkrisxxx wrote:

Some N2 gas is mixed with some O2 gas, and the sketch below shows a representative sample of the mixture. The total pressure of the mixture is measured, and found to be 1050. torr. key carbon hydrogen nitrogen sulfur oxygen chlorine Calculate the mole fraction and partial pressure of each gas in this mixture. Round your answers to 4 significant digits. You may assume each gas behaves as an ideal gas.

for this can you give me the proportions or mole fractions of nitrogen and oxygen

Yea the mole fraction of Nitrogen is 0.781 and for Oxygen is 0.210

jayfafr · Answer

@xxxkrisxxx wrote:

@jayfafr wrote:

@xxxkrisxxx wrote:

Some N2 gas is mixed with some O2 gas, and the sketch below shows a representative sample of the mixture. The total pressure of the mixture is measured, and found to be 1050. torr. key carbon hydrogen nitrogen sulfur oxygen chlorine Calculate the mole fraction and partial pressure of each gas in this mixture. Round your answers to 4 significant digits. You may assume each gas behaves as an ideal gas.

for this can you give me the proportions or mole fractions of nitrogen and oxygen

Yea the mole fraction of Nitrogen is 0.781 and for Oxygen is 0.210

Partial pressure of nitrogen ≈ 820.05 torr Partial pressure of oxygen ≈ 220.50 torr

xxxKrisxxx · Answer

@jayfafr wrote:

@xxxkrisxxx wrote:

@jayfafr wrote:

@xxxkrisxxx wrote:

Some N2 gas is mixed with some O2 gas, and the sketch below shows a representative sample of the mixture. The total pressure of the mixture is measured, and found to be 1050. torr. key carbon hydrogen nitrogen sulfur oxygen chlorine Calculate the mole fraction and partial pressure of each gas in this mixture. Round your answers to 4 significant digits. You may assume each gas behaves as an ideal gas.

for this can you give me the proportions or mole fractions of nitrogen and oxygen

Yea the mole fraction of Nitrogen is 0.781 and for Oxygen is 0.210

Partial pressure of nitrogen ≈ 820.05 torr Partial pressure of oxygen ≈ 220.50 torr

Tysm! Now you can rest your brain on behalf of my sake!

jayfafr · Answer

lmao ty

xxxKrisxxx · Answer

3 out of 4 was correct, which is good enough! Thanks, you're a life savor lol

jayfafr · Answer

WHAT

jayfafr · Answer

nah we redo that shii

xxxKrisxxx · Answer

I'll copy and paste it here lol

xxxKrisxxx · Answer

A marine biologist is preparing a deep-sea submersible for a dive. The sub stores breathing air under high pressure in a spherical air tank that measures 68.0 cm wide.
The biologist estimates she will need 5600. L of air for the dive. Calculate the pressure to which this volume of air must be compressed in order to fit into the air tank. Write your answer is atmostpheres. Round your answer to 3 significant digits.

xxxKrisxxx · Answer

The answer is 34.0 atm

@xxxkrisxxx wrote:

A marine biologist is preparing a deep-sea submersible for a dive. The sub stores breathing air under high pressure in a spherical air tank that measures 68.0 cm wide. The biologist estimates she will need 5600. L of air for the dive. Calculate the pressure to which this volume of air must be compressed in order to fit into the air tank. Write your answer is atmostpheres. Round your answer to 3 significant digits.

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