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Anna11 [10]
3 years ago
9

a huge tank contains 80,000 liters of oxygen, at a pressure of 760mmHg. If the oxygen is to be replaced into cylinder of 20 lite

rs capacity at a pressure of 3040mmHg, how many cylinders will be needed?​
Chemistry
1 answer:
bearhunter [10]3 years ago
7 0
Ooooooogoogogoogoggunnmko
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What is the mass of 2.80 grams of H2O
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How many pounds of ice are required to absorb 4900 kJ of heat as the ice melts? The heat of fusion of water is 0.334 kJ/g.
Goshia [24]

Answer:

m = 32.34 pounds of ice.

Explanation:

In this case we need to use the following expression of heat:

q = m * ΔHf   (1)

Where:

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m: mass of the compound in g

ΔHf: heat of fusion of the water in kJ/g

We are asked to look for the mass of ice in pounds, so after we get the grams, we need to convert the grams to pounds, using the following conversion:

1 pound --------> 453.59 g   (2)

So, we have the heat and heat of fusion, from (1) let's solve for the mass, and then, using (2) the conversion to pounds:

q = m * ΔHf  

m =  q / ΔHf

m = 4900 / 0.334 = 14,670.66 g of ice

Now, the conversion to pounds:

m = 14,670.66 g * 1 pound/453.59 g

<h2>m = 32.34 pounds of ice.</h2>

Hope this helps  

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A chemist reported that 100 gallons of a gas were available in a laboratory. Which property of the gas did the chemist report?
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It would be volume

Explanation:

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Read 2 more answers
Most oxygen in our atmosphere _____. has two oxygen atoms has three oxygen atoms combines with carbon has a single oxygen atom
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Answer:

has Two oxygen atoms

Explanation:

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