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VMariaS [17]
3 years ago
9

How many moles of KBr will be produced from 7 moles of BaBry? BaBr2+ K2SO4 → KBr +BaSO4

Chemistry
1 answer:
dalvyx [7]3 years ago
7 0

7 moles of BaBr₂ produces 14 moles of KBr.

<u>Explanation:</u>

Given reaction is

BaBr₂ + K₂SO₄ → KBr + BaSO₄

It can be balanced by putting 2 in front of KBr as,

BaBr₂ + K₂SO₄ → 2 KBr + BaSO₄

From the above balanced equation, it was found that, 1 mole of Barium bromide required to produce 2 moles of KBr.

Now the molar ratio of BaBr₂ to KBr is written as 1 : 2.

In the same way, the molar ratio for 7 moles of BaBr₂, can be written as 7:14.

So 7 moles of BaBr₂ produces 14 moles of KBr.

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An aluminum atom has a mass of 4.48 * 10-23 g and a small airplane has a mass of 5000 kg. Use this information to answer the que
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a. 27g/mol

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What is the relationship between a compound and the elements it is made from?
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An unknown gas effuses at one half the speed of oxygen. What is the molar mass of the unknown? It is either HBr or HI. Which gas
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  • Thomas Graham found that, at a constant  temperature and pressure the rates of effusion  of various gases are inversely proportional to  the square root of their masses.

Rate of effusion ∝ 1/√molar mass.

  • <em>(Rate of effusion of O₂) / (Rate of effusion of unknown gas) = (√molar mass of unknown gas) / (√molar mass of O₂).</em>
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∵ Rate of effusion of unknown gas = 1/2 (Rate of effusion of O₂)

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( √molar mass of unknown gas) = 2.0 x √32.0

By squaring the both sides:

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<em>So, the unknown gas is HI.</em>

<em></em>

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