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erik [133]
3 years ago
12

What is the molar mass of lead nitrate (Pb(NO3)2) from the equation below?

Chemistry
1 answer:
AveGali [126]3 years ago
3 0

Answer:

331.2 g/molExplanation:

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A 2.4 L balloon holds 3.7 mol He. If 1.6 mol He are added to the balloon, what is the new volume?
Elanso [62]
For this question, lets apply Avagadro's law
when Pressure and temperature are constant, the volume occupied is directly proportional to the number of moles of gases.
\frac{V}{n} = k
where V-volume, n-number of moles and k - constant 
Therefore at 2 instances 
\frac{V1}{n1} =  \frac{V2}{n2}
where V1 and n1 are for 1st instance 
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V1 = 2.4 L
n1 = 3.7 mol
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since more He moles are added at the 2nd instance its the sum of the moles.
V2 needs to be calculated \frac{2.4}{3.7}  = \frac{V2}{5.3}
V2 = 2.4 x 5.3 / 3.7
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Answer is 1st option 3.4 L


6 0
3 years ago
Most minerals on earth's surface contain what
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How many elements are in P4I10
artcher [175]

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