Balancing Practice (some of these may be in the simulation)
Balance the following equations. You may find it useful to use scratch paper to write how many atoms of each element you have on both sides of the reaction.

16. P4(s) + F2(g) → PF3(s)

17. ___C(s) + H2O(g) → CH4(g) + CO2(g)

18. HgO(s)→ O2(g) + Hg(l)

19. CaCO3(s) → CO2(g) + CaO(s)

see below

Explanation:

16. 1 P₄(s) + 6 F₂(g) → 1 PF₃(s)

17. 2 C(s) + 2 H₂O(g) → 1 CH₄(g) + 1 CO₂(g)

18. 2 HgO(s)→ 1 O₂(g) + 2 Hg(l)

19. 1 CaCO₃(s) → 1 CO₂(g) + 1 CaO(s)

sorry i was late, but i don't know what assignment your talking about, i'm in flvs as well, im in earth space science. but u are behind pace bc every class should be in the 3's or 4'