Question

Dichlorosilane is a compound that contains silicon (Si), hydrogen (H), and chlorine (Cl) atoms. It has the chemical formula SiH2Cl2. Which statement accurately describes dichlorosilane?
Each molecule contains two chlorine atoms.
Each molecule contains three atoms.
Each molecule contains five different elements.
Each molecule contains five compounds.

A or D?

Answer 1

I think the correct answer is A. Dichlorosilane has a formula of SiH2Cl2. As we can see, for every mole of this compound there will be two atoms of chlorine, two atoms of hydrogen and one atom of silicon. There are 3 different types of atoms involved. And all of this makes up a compound.