QA49 (N13/13/Q9) Use of the Data Booklet is relevant to this question.
When an evacuated fluorescent light tube of volume 300 cm^3 is filled with a gas at 300K and
101 kPa, the mass of the tube increases by 1.02g. The gas obeys the ideal gas equation
What is the identity of the gas?

A argon
B krypton
C neon
D nitrogen

One of the hopes for solving the world's energy problem is to make use of the fusion reaction 21h +31h --> 42he + 10n + energy how much energy is released when 1 mol of deuterium is fused with 1 mol of tritium according to the above reaction? the masses of the atoms and the neutrons are as follows: 21h = 2.0140 amu 31h = 3.01605 amu 42he = 4.002603 amu 10n = 1.008665 amu. the speed of light is 2.9979 x 108 m/s.