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worty [1.4K]
3 years ago
8

. How many moles are there in 8.5 x 1024 molecules of sodium sulfate, Na2SO4?

Chemistry
1 answer:
NeTakaya3 years ago
5 0

Answer: To solve this question, we need to use the Avogadro's Number, which is a constant first discovered by Amadeo Avogadro, an Italian scientist. He discovered that in a mole of a substance, there are 6,02*10²³ molecules. Using this relationship, we apply the following conversion factor:

So, 8,50 * 10²⁴ molecules of Na₂SO₃ represent 14,12 moles of Na₂SO₃

Explanation:

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Here:

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calculation
heat  =  number of moles  x  delta H

delta H = - 65.2  Kj/mol

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