Question

Calculate the number of moles in 140g of nitrogen gas and then also find its volume at STP?N=14

Answer 1

Answer:

Explanation:

moles= mass/molar mass

moles= 140/28

moles= 10/2

moles= 5 mol

moles= volume/22.4

5 = volume/22.4

volume= 5 × 22.4

volume= 112 L

Answer 2

Answer:

5moles and 112L

Explanation:

Since, no of moles= Mass÷GMM

n=Mass÷GMM

 = 140÷28= 5 moles

Since, Vol (at STP)= no of moles ×22.4L

vol(at stp)= n×22.4

               =5×22.4L

               =112L