chemestry lab

In the reactions presented below, how many redox reactions are there?
HCl(aq) NaOH(aq) → NaCl(aq) H2O(l)
CH4(g) 2O2(g) → CO2(g) 2H2O(l)
AgNO3(aq) NaCl(aq) → AgCl(s) NaNO3(aq)
2H2(g) O2(g) → 2H2O(l)
HCl(aq) NaHCO3(aq) → NaCl(aq) CO2(g) H2O(l)
2C6H6(l) 15O2(g) → 12CO2(g) 6H2O(l)
CuSO4(aq) Mg(s) → Cu(s) MgSO4(aq)

Group of answer choices

1

5

3

2

4

0

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