Why do metals decrease in mass in acids?
Well masses are constant in chemical reactions.........
So I assume you are asking why you might get more mass out of a reaction between a metal and an acid with respect to the mass of the metal you put in.......
Metals tend to form salts in acids....... And for a simple reaction we could advance.......
And thus were to use a
And thus mass of
What mass of dihydrogen gas would be evolved in this reaction? Why would it be easier to measure the volume of the gas evolved?