12. When 2.00 g of H2 reacts with 32.0 g of O2 in an explosion, the final gas mixture will contain:

a. H2, H2O, and O2

b. H2 and H20 only

c. O2 and H20 only

d. H2 and O2 only

e. H20 only

they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)