Which of the following reactions is a DECOMPOSITION reaction? *
2 points
O
NaOH + KCI – KOH + NaCl
2CaO2Ca + O2
O
Br2 + 2K1 — 12 + 2KBr
2H2 + O2 + 2H20
O
C2H6 + 02 → CO2 + H20
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Explanation:

Atoms don't disappear in chemical reactions, nor do they appear. ... Let's look at one of your examples: C2H6 + O2 = CO2 + H2O Assume that ... the equation: C2H6 + O2 = CO2 + H20 2*C, 6*H, 2*O 1*C, 3*O, 2*H This can't be ... 2 C2H6 + O2 = 4 CO2 + 6 H20 4*C, 12*H, 2*O 4*C, 14*O, 12*H Now we can

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;