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Nesterboy [21]
2 years ago
8

One mole of silver has a mass of 107.9 grams. Approximately how many atoms of silver are present in one mole of silver?

Chemistry
2 answers:
steposvetlana [31]2 years ago
7 0

Answer  C) 6 × 1023 atom

Gemiola [76]2 years ago
3 0

Answer:

C

Explanation:

I took the quiz

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<span>The density of the solution =1.05 g/ml.
</span><span>The total mass of the resulting solution is = 398.7 g (CaCl2 + water)
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Find moles of CaCl2 and water.
Molar mass of CaCl2 = 110 (approx.)

Moles of CaCl2 = 23.7 / 110  = 0.22
so, moles of Cl- ion = 2 x 0.22 = 0.44  (because each molecule of CaCl2 will give two Cl- ions)
Moles of water = 375 / 18 = 20.83

Now, Mole fraction of CaCl2 =  (moles of CaCl2) / (total moles)

total moles = moles of Cl- ions + moles of Ca2+ ions + moles of water

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=21.49


So, mole fraction = 0.44 / (21.49) = 0.02

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