75 points !!Classify the following reactions as to SYNTHESIS, DECOMPOSITION, COMBUSTION, SINGLE REPLACEMENT or DOUBLE REPLACEMENT reactions: N2 (g) + 3 H2 (g)→ 2NH3 (l)

2 H2(g) + O2(g--> 2 H2O(g)

CaCO3(s) → CaO(s) + CO2(g)

Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g)

14. many depressants reduce small muscle control, making it harder for a. you to steer b. your mind to consider complex problems c. the eye to scan, focus, or stay still d. the kidneys to filter alcohol out of the bloodstream

The following reaction shows sodium carbonate reacting with calcium hydroxide. na2co3 + ca(oh)2 → naoh + caco3 how many grams of naoh are produced from 20.0 grams of na2co3? (molar mass of na = 22.989 g/mol, c = 12.01 g/mol, o = 15.999 g/mol, ca = 40.078 g/mol, h = 1.008 g/mol) 12.2 grams 15.1 grams 24.4 grams 30.2 grams

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same