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MatroZZZ [7]
3 years ago
9

Find the moles in 245g of lithium bromide

Chemistry
1 answer:
s2008m [1.1K]3 years ago
3 0

245gLiBr/86.84(molar mass of LiBr)=2.82128 moles

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hodyreva [135]

Answer:

28.16 g/mol

Explanation:

From Graham's law;

Let the rate of diffusion of gas X be 1.25

Let the rate of diffusion of CO2 be 1

Molecular mass of gas X= M

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1.25/1=√44/M

(1.25/1)^2 = 44/M

1.5625 = 44/M

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M= 28.16 g/mol

4 0
3 years ago
2. Nitric oxide contains 46.66% nitrogen and 53.34% oxygen. Water contains 11.21% hydrogen and 88.79% oxygen. Ammonia contains 1
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Answer:

The law of reciprocal proportions states that if two elements react individually with a given weight of a third element, the ratio of the masses with which they combine with the third element are either the same or a simple multiple of the ratio of the masses with which they combine with each other

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Oxygen = 53.34% × 30.01 = 16

2) Water, H₂O

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Oxygen = 88.79% × 18.01528 ≈ 16

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The ratio in which hydrogen and oxygen combine with nitrogen = 3/16

The ratio of hydrogen and oxygen combine with each other in water = 2/16

Therefore, the ratio with which hydrogen and oxygen combine with nitrogen, is (2/3) times the ratio with which they combine with each other, which verifies the law of reciprocal proportions

Explanation:

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How many moles of iron can be produced from 4.20 moles of iron (III) oxide?
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Hope this helps, have a nice day ahead!

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