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podryga [215]
4 years ago
11

What happens when two or more atoms react?

Chemistry
1 answer:
lisabon 2012 [21]4 years ago
7 0

Atoms bond to form molecules: Two or more atoms may bond with each other to form a molecule. When two hydrogens and an oxygen share electrons via covalent bonds, a water molecule is formed.

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CaC2 + 2H2O → C2H2 + Ca(OH)2 If 2.8 moles of CaC2 are consumed in this reaction, how many grams of H2O are needed?
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A sample of gas is kept at a temperature of 300 k, a volume of 1.45L, and a pressure of 3.00 kPa. How many moles of has are in t
klasskru [66]

Answer:

the number of moles of the gas is 0.00174 mol.

Explanation:

Given;

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The number of moles of the gas is calculated using Ideal gas equation, as follows;

PV = nRT

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n = PV / RT

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Why do ashes from fire have a much lower mass than the wood that was burned
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