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2 years ago

Convert 6.75 atm to torr Hg (using dimensional analysis method)

1 answer:

5 0

Well, torr and Hg are different units, but they have the same conversiton with atm.

The conversion for atm to torr or mmHg is 1 atm = 760 torr = 760 mmHg.

Because you have 6.75 atm you can find both the torr and mmHg.

To use dimensional analysis just make sure that you cancel out your units as you go.

6.75 atm * (760 torr / 1 atm) = 5130 torr or 5.13 x 10 to the -3 torr with significant figures.

I hope this helped.

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A 4.215 g sample of a compound containing only carbon, hydrogen, and oxygen is burned in an excess of oxygen gas, producing 9.58

Scilla [17]

Answer:

$\% O=27.6\%$

Explanation:

Hello,

In this case, for the sample of the given compound, we can compute the moles of each atom (carbon, hydrogen and oxygen) that is present in the sample as shown below:

- Moles of carbon are contained in the 9.582 grams of carbon dioxide:

$n_C=9.582gCO_2*\frac{1molCO_2}{44gCO_2}*\frac{1molC}{1molCO_2} =0.218molC$

- Moles of hydrogen are contained in the 3.922 grams of water:

$n_H=3.922gH_2O*\frac{1molH_2O}{18gH_2O} *\frac{2molH}{1molH_2O} =0.436molH$

- Mass of oxygen is computed by subtracting both the mass of carbon and hydrogen in carbon dioxide and water respectively from the initial sample:

$m_O=4.215g-0.218molC*\frac{12gC}{1molC} -0.436molH*\frac{1gH}{1molH} =1.163gO$

Finally, we compute the percent by mass of oxygen:

$\% O=\frac{1.163g}{4.215g}*100\% \\\\\% O=27.6\%$

Regards.

5 0

3 years ago

What kind of compound has two atoms in it

statuscvo [17]

H20 can be a molecule or a compound because it is made up of Hydrogen(H)

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2 years ago

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2 years ago

How many molecules are there in 122 grams of Cu(NO3)2?

ipn [44]

Cu =63.5
2 times N =28.02
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96=63.5=28.02=127.07
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2 years ago

Which gas occupies the highest volume at STP?

Vedmedyk [2.9K]

The gas, 2 mol of H2, occupies the highest volume at STP since at STP the volume of this gas is approximately 44.8 mol as compared to other options this has the greatest amount.

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3 years ago

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