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28 grams calcium oxide (1 mole CaO/56.08 grams)

= 0.50 moles CaO

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How many moles of calcium oxide are produced when 36.5 grams of calcium reacts completely with oxygen gas?

2Ca + O2 --> 2CaO The molar mass of Calcium is 40g/mol. 36.5g/40g gives you 0.9125 moles of Calcium. The moles of calcium are equivalent to the moles of Calcium oxide. The answer is 0.9125 moles of calcium oxide. Correct me if I am wrong.


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How many grams is 3 moles of calcium?

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To find the number of moles in 5000 grams of calcium, you need to divide the given mass by the molar mass of calcium. The molar mass of calcium is approximately 40.08 g/mol. So, 5000 grams of calcium is equal to 5000/40.08 = 124.69 moles of calcium.


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