In which step of the scientific method is information obtained through the senses

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.

Why sncl2 is solid while sncl4 is liquid at room temprature explain it in easy way

Acompound is isolated from the rind of lemons that is found to be 88.14% carbon and 11.86% hydrogen by mass how many grams of c and h?