3 years ago

What is the main intermolecular force in H2CO?

Chemistry

1 answer:

aivan3 [116]3 years ago

5 0

Dipole-dipole interactions, and London dispersion interactions

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Determine the percent water in MgSO4*7H20?

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$\% H_2O=51.2\%$

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:

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

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

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