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Alex787 [66]
4 years ago
6

What is 3/2(x-5)=-6

Chemistry
1 answer:
shepuryov [24]4 years ago
3 0

3/2(x-5)=-6 3x-15=-6*2 3x=-12+15 3x=3 x=3/3 x=1

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The total mass of the atmosphere is about 5.00 x 1018 kg. How many moles each of air, O2, and CO2 are present in the atmosphere?
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<u>Answer:</u> The moles of oxygen and carbon dioxide in air is 3.63\times 10^{19}mol and 7.18\times 10^{16}mol respectively

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Given mass of atmosphere = 5.00\times 10^{18}kg=5.00\times 10^{21}g

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Putting values in above equation, we get:

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We know that:

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Percent of carbon dioxide in air = 0.0415 %

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Moles of carbon dioxide in air = \frac{0.0415}{100}\times 1.73\times 10^{20}=7.18\times 10^{16}mol

Hence, the moles of oxygen and carbon dioxide in air is 3.63\times 10^{19}mol and 7.18\times 10^{16}mol respectively

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