MCQ
A sample was weighted using two different balances. The result’s were (i) $3.929\, g$ (ii) $4.0\, g$. How would the weight of the sample be reported......$g$
- A$3.929$
- B$3 $
- C$3.9 $
- ✓$3.93$
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$2H_2(g) + O_2(g) \to 2H_2O(l)$ ; $\Delta _fH^o_{298}(H_2O(l)) = -285.5\, kJ/mol$
What is $\Delta S^o_{298}$ for the given fuel cell reaction ?
Given $: O_2(g) + 4H^+(aq) + 4e^- \to 2H_2O(l)$ $E^o = 1.23\, V$