The reactants of a chemical equation are 3H2 and Nz. Which set of atoms must make up the equation's products so that the equation models the law of
conservation of mass?
A. 2 H and 2 Na
B. 4 Hg and 3 N
C. 6 H and 2 N
D. 8 H and 2 Na

If you mean N2 and not Nz, it should be C.

Explanation:

B.) 6 H and 2 N

Explanation:

:p

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.