What is the electrical charge of a cation? a. zero b. positive c. negative

What is the molar mass of a gas that has density of 2.054 g/l

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.

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.