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Sladkaya [172]
3 years ago
9

I need help on question 5

Chemistry
1 answer:
Naily [24]3 years ago
4 0
Pretty sure the answer is A, but you probably shouldn't use Brainly to answer test questions.
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CaC2 + 2H2O ⟶ C2H2 + Ca(OH)2<br><br> How many moles of water are needed to produce 56.8g C2H2?
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Amount of substance is n= m/M= 56.8 g / 26.036 g/mol= 2.18159 mol

Water is needed 2·2.18 mol = 4.36 mol

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