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n200080 [17]
3 years ago
13

Calculate the number of moles present in 9.50g of co2

Chemistry
1 answer:
pshichka [43]3 years ago
3 0

Answer:

0.4318 mol

Explanation:

Moles= mass/ mollar mass

Moles= 9.50/22

Moles= 0.4318 mol

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8 0
2 years ago
a solution of HCI contains 36 percent HCI,by mass and calculate the mole fraction of HCI in the solution?​
denis-greek [22]

Explanation:

You have a solution that contains 36 g HCl dissolved in 64 g water

Molar mass HCl = 36.45 g/mol

Mol HCl in 36 g = 36 g / 36.45 g/mol = 0.9876 mol

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Mol H2O in 64 g = 64 g / 18 g/mol = 3.5556 mol

Total mol = 0.9875 + 3.5556 = 4.5431 mol

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Mol fraction H2O = 3.5556 / 4.5431 = 0.7826

The answer should have 2 significant digits:

Mol fraction HCl = 0.22

Mol fraction H2O = 0.78

Mol fraction has no units.

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4 0
2 years ago
Which group on the periodic table contains only metals?
Snezhnost [94]

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Explanation:

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3 years ago
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