Calculating the number of moles of air


by Dooh
Tags: moles, number
Dooh
Dooh is offline
#1
Nov21-05, 07:13 PM
P: 43
BY only given the mass of air in a certain sample, how would one calculate the number of moles of air in the sample?

n = m / mass per mole

however, whats mass per mole? and how would you solve for it? thanks.
Phys.Org News Partner Science news on Phys.org
Lemurs match scent of a friend to sound of her voice
Repeated self-healing now possible in composite materials
'Heartbleed' fix may slow Web performance
Thanks4DaHelp
Thanks4DaHelp is offline
#2
Nov21-05, 07:20 PM
P: 1
Determine the molar mass of air, then use mass/molar mass to figure out the moles of air, then utilize that as you wish.
Dooh
Dooh is offline
#3
Nov21-05, 07:39 PM
P: 43
yea, thats exactly what im trying to figure out. How do you find the molar mass of air?

mezarashi
mezarashi is offline
#4
Nov21-05, 07:56 PM
HW Helper
P: 661

Calculating the number of moles of air


To solve for mass per mole (a.k.a molar mass) you need to know the composition of the air. What is air made out of? How would you find the molar mass of hydrogen, oxygen, or carbon? (hint: it's all in the periodic table).


Register to reply

Related Discussions
calculating the amount in moles Chemistry 18
Determining Number of Moles Question Biology, Chemistry & Other Homework 4
Calculating Moles of O Atoms? Biology, Chemistry & Other Homework 3
calculating moles, ratio, empirical formula Biology, Chemistry & Other Homework 3
Difficult AP Chemistry Question (Titration + Calculating Moles) Biology, Chemistry & Other Homework 6