Answer:
4.1 moles Li2O = 94 g (incorrect)
4.1 mole of Li2O = 122.6g(correct)
Explanation:
1. Molar mass of O2 = 32
0.2 mole of 32 = 0.2×32 = 6.4g (correct)
2. Molar mass of H2CO3 = 62.03
0.75 mole of 62.03 = 0.75×62.03 = 46.5g (47 is correct)
3. Molar mass of CO = 28
3.42 moles of 30 = 3.42×28 = 95.76 (95.8 is correct)
4. Molar mass of Li2O = 29.9
4.1 mole of Li2O = 4.1×29.9 = 122.59g (94g is incorrect)
