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mafiozo [28]
3 years ago
9

A laboratory bottle of helium gas occupies a volume of 2.0 L at 760 mm Hg. Calculate the new pressure if the volume falls to 1.8

L.
Chemistry
1 answer:
irina1246 [14]3 years ago
6 0

Answer: 844 mm Hg

Explanation:

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What are some uses of the mineral gypsum?
Damm [24]

Explanation:

Chemical formula of gypsum is CaSO_{4}.2H_{2}O and it is a soft sulfate mineral that consists of calcium sulfate dihydrate.

Some uses of gypsum are as follows.

  • It is used for manufacturing wall board.
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  • It is also used as a fertilizer.

Thus, we can conclude that out of the given options, fertilizer, wallboard, and plaster of paris are some uses of the mineral gypsum.

4 0
3 years ago
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a gas cylinder contains 2.0 mol of gas X and 6.0 mol of gas Y at a total pressute of 2.1 atm. what is he partial pressure of gas
Igoryamba

The answer is 1.6 atm. Let's first calculate the mole fraction of gas Y.

The mole fraction (x) is: x = n1/n, where n1 is a number of moles of an

individual gas in a mixture and n is total moles of the gas mixture. We

know that n1 of gas Y is 6.0 mol (n1 = 6.0 mol) and that there are in

total 8. mol of the gas mixture (n = 2.0 + 6.0 = 8.0 mol). Now calculate

the mole fraction of gas Y. x = 6.0/8.0 = 0.75. Now, let's use the mole

fraction of gas Y (x) and the total pressure (P) to calculate the

partial pressure of gas Y (P1): x = P1/P. P1 = x * P. If x = 0.75 and P =

2.1 atm, then the partial pressure of gas Y is: P1 = 0.75 * 2.1 atm =

1.6 atm.

6 0
4 years ago
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Which state of matter has a definite volume and takes the shape of its container?
maksim [4K]

Answer:

Explanation:

liquid only is the matter which has a definite volume and takes the shape of its container

5 0
4 years ago
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3. The drop factor (gtts/cc) is the number of drops it takes to equal 1 cc for specific tubing in intravenous fluids. All
viva [34]

Answer:

30gtts/min

Explanation:

To solve this problem we need to divide the volume(mL) and time(min) then multiply by the drop factor. Note that 1hr = 60min.

120/60 * 15 = 30gtts/min

Best of Luck!

7 0
3 years ago
Circle the correct one from given alternatives.
mash [69]

Answer:

24 is the correct anwer

this the anwer text this u no

3 0
2 years ago
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