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)

How many neutrons does a atom of cobalt have?

Select the correct answer. when carbon dioxide dissolves in water, it sometimes reacts with water to form carbonic acid as in this balanced equation: co2 + h2o → h2co3. if 495 milliliters of carbon dioxide at 25°c and 101.3 kilopascals reacts with excess water, what is the theoretical yield of carbonic acid? use the periodic table and the ideal gas resource a. 0.889 g b. 1.10g c. 1.27g d. 2.02g what's the answer! quick!

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory