NEED HELP ON MY CHEM REVIEW ASAP! 8.0 grams of oxygen gas is mixed with 8.0 gram

Question

NEED HELP ON MY CHEM REVIEW ASAP! 8.0 grams of oxygen gas is mixed with 8.0 grams of nitrogen gas in a container. Which has exerts the larger partial pressure? Why?
The answer is: nitrogen gas, more molecules are present. I need help understanding this, can this be explained? ....Why? How? NEED HELP ON MY CHEM REVIEW ASAP! 8.0 grams of oxygen gas is mixed with 8.0 grams of nitrogen gas in a container. Which has exerts the larger partial pressure? Why?
The answer is: nitrogen gas, more molecules are present. I need help understanding this, can this be explained? ....Why? How? 8.0 grams of oxygen gas is mixed with 8.0 grams of nitrogen gas in a container. Which has exerts the larger partial pressure? Why?
The answer is: nitrogen gas, more molecules are present. I need help understanding this, can this be explained? ....Why? How?

Explanation / Answer

number of moles of O2 = mass/molar mass
= 8.0/32
= 0.25 mol

number of moles of N2 = mass/molar mass
= 8.0/28
= 0.29 mol

since number of moles of N2 is more than number of moles of O2,
O2 will exert more pressure as per P*V = n*R*T
Because P and n are directly proportional

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