How many hydrogen atoms are there in total in the following formula?"

12

Explanation:

The answer is 12 because You are looking for hydrogen which is the big H. you look to the number below it and it is 12. So H stands for hydrogen and there are 12 Hydrogen getting you your answer of 12.

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.