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Mazyrski [523]
3 years ago
11

Will any of these properties change after a couple of hours in the sun

Chemistry
1 answer:
Rudiy273 years ago
4 0

Explanation:

what properties are you talking about?

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Give the answer to the problem below using the correct number of significant digits. (1.3 x 103) x (5.724 x 104)
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Balance the following equations:
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7 0
3 years ago
An aqueous solution contains 32.7% KCl (wt/wt%). what is the mole fraction of KCl in the solution
inna [77]

The mole fraction of KCl in the solution is 0.1051

calculation

mole fraction of KCl in solution = moles of KCl / total number of moles(moles of KCl +moles of H2O)

moles=mass/molar mass

mass of KCl=32.7g

molar mass of KCl= 39 +35.5

moles of KCl is therefore= 32.7g/74.5 g/mol=0.439 moles

find the moles of H2O= mass of H2O/molar mass

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5 0
3 years ago
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