3 years ago

Why is energy a conceptual model?

Chemistry

1 answer:

alexgriva [62]3 years ago

3 0

Answer:

Conceptual energy modeling does not produce the same accurate results as energy modeling with building elements

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How many molecules of oxygen are produced when a sample of 38.9 g of water is decomposed by electricity?

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A) $6.5\times 10^{23}\ \text{molecules}$

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m = Mass of water = 38.9

M = Molar mass of water = 18 g/mol

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The reaction of electrolysis would be

$2H_2O(l)\rightarrow 2H_2(g)+O_2(g)$

Number of moles of $H_2O$

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From the reaction it can be seen that 2 moles of $H_2O$ gives 1 mole of $O_2$

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So, $6.5\times 10^{23}\ \text{molecules}$ of oxygen is produced.

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