Chemistry, 17.12.2019 03:31 mohammedel04
Determine the oxidation number (oxidation state) of each element in the following six compounds. (a) cuco_3 cu: + 2 c: +4 o: - 2 (b) ch_4 c: - 4 h: + 1 (c)if 1: + 1 f: - 1(d) ch_2ci_2 c: - 4 h: + 1 ci: - 1 the sum of the oxidation numbers in a compound is zero. since you know there are two h (oxidation state +1) and two cl (oxidation state -1), you can determine the oxidation state for c. (e) so_2 s: + 4 o: - 2 (f) {nh_4}_2 cro_4 h: + 3 n: - 1 o: - 6 cr: + 1
Answers: 2
Chemistry, 21.06.2019 22:20
Calcium hydride (cah2) reacts with water to form hydrogen gas: cah2(s) + 2h2o(l) → ca(oh)2(aq) + 2h2(g) how many grams of cah2 are needed to generate 45.0 l of h2 gas at a pressure of 0.995 atm and a temperature of 32 °c?
Answers: 2
Chemistry, 22.06.2019 18:10
Given the following at 25c calculate delta hf for hcn (g) at 25c. 2nh3 (g) +3o2 (g) + 2ch4 (g) > 2hcn (g) + 6h2o (g) delta h rxn= -870.8 kj. delta hf=-80.3 kj/mol for nh3 (g), -74.6 kj/mol for ch4, and -241.8 kj/mol for h2o (g)
Answers: 1
Determine the oxidation number (oxidation state) of each element in the following six compounds. (a)...
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