Which subatomic particles are primarily responsible for giving an atom its mass?

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

Which element is the least metallic between cadmium, silver, zinc, or iron?

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?