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mario62 [17]
3 years ago
10

2.0 grams of ZnSO4 reacts completely with Li2CO3; how many grams of Li2SO4 would be produced?

Chemistry
1 answer:
grin007 [14]3 years ago
3 0
Moles of ZnSO4 = Mass/Mr
= 2/(65.4 + 32.1 + (16 x 4))
= 0.012383.... mol

Since there is no chemical equation provided, I will assume that the ratio of ZnSO4:Li2CO3 is 1:1

Therefore there are 0.012383 mil of Li2SO4 as well
So the mass would be Moles x Mr = 0.012383.... x ((6.9 x 2) +32.1 + (4x16))
= 1.360 g of Li2SO4 produced
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The question is missing information. Here is the complete question.

A gas at a pressure of 2.0 atm is in a closed container. Indicate the changes (if any) in its volume when the pressure undergoes the following changes at constant temperature and constant amount of gas. Match the words in the left with the column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer.

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Explanation: According to the Ideal Gas Law, <u>Pressure</u>, <u>Volume</u> and <u>Temperature</u> of an ideal gas is related, as the following: PV = nRT.

In this case, since temperature (T) and amount of gas (n) are constant, the <em><u>Boyle's</u></em> <em><u>Law</u></em> can be used.

The law states that the volume of a given gas, under the conditios of temperature and amount of it are constant, is inversely proportional to the applied pressure: P₁.V₁ = P₂.V₂

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Initial P (P₁) = 2

Initial V (V₁) = V

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P₁.V₁ = P₂.V₂

2.V = 6.V₂

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When the pressure increases to 6 atm, volume <em><u>decreases</u></em> by 1/3.

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When pressure drops to 0.4 atm, volume <em><u>increases</u></em> by 5.

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Since there are no change in the pressure, the volume is the same from the beginning, so <em><u>does not change</u></em>.

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