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12 June, 19:38

In the reaction 2Ca + O2 → 2CaO for every 2 Ca you will need how much O2? a. 1 c. 3 b. 2 d. 4

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Answers (2)
  1. 12 June, 21:11
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    The balance numbers are 2 1 2. Since the 1 is in front of the O 2, then you need 1 mole of O 2. The equation does not show the 1.
  2. 12 June, 22:34
    0
    The answer will be b. 2
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