Some compounds, like carbon dioxide, are gaseous at room temperature, while others are solid at room temperature. why is this?

Plz me get these answer dubble cheak ur answer plz ppl i need it right

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.

Which property of water causes water drops to bead on a freshly waxed car?