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dexar [7]
3 years ago
8

I need help with the true or false

Chemistry
2 answers:
9966 [12]3 years ago
6 0

Answer:

1. True

2. True

3.True

4. False

5. True

6. False

7.True

Explanation:

denis-greek [22]3 years ago
3 0
Trueeeeeeeeeeeeeeeeeee
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grandymaker [24]

Answer:

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3 years ago
Calculate the mole fraction of the total ions in an aqueous solution prepared by dissolving 0.400 moles of CaI2 in 850.0 g of wa
Evgesh-ka [11]

Answer:

0.00840

Explanation:

The computation of the mole fraction is as follow:

As we know that

Molar mass = Number of grams ÷ number of moles

Or

number of moles = Number of grams ÷ molar mass

Given that

Number of moles of CaI2 = 0.400

And, Molar mass of water = 18.0 g/mol

Now  Number of moles of water is

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And, Total number of moles is

= 0.400 + 47.22

= 47.62

So, Molar fraction of CaI2 is

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= 0.00840

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In a kitchen, during preparation of food or tea, salt and sugar are
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