A balloon initially contains 7g of nitrogen and then 14g of nitrogen is added to the balloon to expand its - Science - Matter in Our Surroundings

Question

A balloon initially contains 7g of nitrogen and then 14g of
nitrogen is added to the balloon to expand its volume to 12L at the
same temperature and pressure Find the initial volume of the
balloon

Geetha · Accepted Answer

For an ideal gas,PV = nRTPV1 = n1RTPV1 = W1M1 × RTPV1   = 728 × RT   ---- 1P × 12 = 1428 × RT -----2PV1   = 728 × RTP×12= 1428 × RT  V1 = 12 × 714 = 6 L
Thus initial volume = 6 L

A balloon initially contains 7g of nitrogen and then 14g of nitrogen is added to the balloon to expand its volume to 12L at the same temperature and pressure . Find the initial volume of the balloon.