Question

According to the following reaction, how many moles of zinc hydroxide are necessary to form 0.908 moles zinc sulfate?

sulfuric acid (aq) + zinc hydroxide (s) = zinc sulfate (aq) + water (l)

Nitrogen monoxide is produced by combustion in an automobile engine. According to the following reaction, how many moles of oxygen gas are necessary to form 0.230 moles nitrogen dioxide?

nitrogen monoxide (g) + oxygen (g) = nitrogen dioxide (g)

According to the following reaction, how many moles of water are necessary to form 0.456 moles oxygen gas?

water (l) = hydrogen (g) + oxygen (g)

Answer 1

@ H₂SO4 (92) + Zn(OH) (s) — Enso (aq) + 240 (1) ACCORDING TO Balanced Epw. I molt zn (64) PRODUCES 1 mole of En sog. so 0.908 molt anso PRODUCED BY = 0:808 mol x 1 =10.908 moe] so 0.230 moli NO2 IS FORMED = 0.230 mol x 10.115 mol of O2 ③ 2H₂O (1) ► 2H₂ (9) + O₂ (8) ACCORDING TO Balanced EPN. 2 mol Hyo Glues 1 moli Oz. so 0.456 moe Og is FORMED from = 0.450 ml x 2 = 10.912 mee] of Zinc HYDROXIDE. 2 2w10 (8) + 0. (9) + 2NO, () ACCORDING TO BALANCED EQN. 1 molf Oz FORMS a moli NO₂. of H₂O.