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Morgarella [4.7K]

2 years ago

13

đốt cháy hoàn toàn một luongj hỗn hợp etyl axetac và etyl propyionic thu đc 15,68 lít khí CO2 ( đktc ). Khối lượng H2) thu được

là

1 answer:

IRINA_888 [86]2 years ago

6 0

Answer: 12,6 gam

Explanation: Hãy thử xem bạn có đồng ý không, tôi đang bối rối

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The molecular weight of a gas that has a density of 5.75 g/l at stp is __________ g/mol.

Ira Lisetskai [31]

Answer : The molecular weight of a gas is, 128.9 g/mole

Explanation : Given,

Density of a gas = 5.75 g/L

First we have to calculate the moles of gas.

At STP,

As, 22.4 liter volume of gas present in 1 mole of gas

So, 1 liter volume of gas present in $\frac{1}{22.4}=0.0446$ mole of gas

Now we have to calculate the molecular weight of a gas.

Formula used :

$\text{Moles of gas}=\frac{\text{Mass of a gas}}{\text{Molecular weight of a gas}}$

Now put all the given values in this formula, we get the molecular weight of a gas.

$0.0446mole=\frac{5.75g}{\text{Molecular weight of a gas}}$

$\text{Molecular weight of a gas}=128.9g/mole$

Therefore, the molecular weight of a gas is, 128.9 g/mole

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39. Consider the following molecules:

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I) cc14
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