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Shkiper50 [21]
2 years ago
13

Which of the following is not part of our solar system?

Chemistry
2 answers:
andreyandreev [35.5K]2 years ago
4 0

Answer:

none of the above

Explanation:

Elodia [21]2 years ago
3 0

Answer:

none of the above

Explanation:

those are all things that are in our solar syestem

Hope this helps! :)

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Determine the percent water in MgSO4*7H20?
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Answer:

\% H_2O=51.2\%

Explanation:

Hello!

In this case, since the percent water is computed by dividing the amount of water by the total mass of the hydrate; we infer we first need the molar mass of water and that of the hydrate as shown below:

MM_{MgSO_4* 7H_2O}=120.36 g/mol+7*18.02g/mol\\\\MM_{MgSO_4* 7H_2O}=246.5g/mol

Thus, the percent water is:

\% H_2O=\frac{7*MM_{H_2O}}{MM_{MgSO_4* 7H_2O}} *100\%\\\\

So we plug in to obtain:

\% H_2O=\frac{7*18.02}{246.5} *100\%\\\\\% H_2O=51.2\%

Best regards!

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2 years ago
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