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Ksivusya [100]
3 years ago
11

The mixture which contains elements only is (a) air (b) brass (c) mineral water (d) seawater

Chemistry
2 answers:
Olin [163]3 years ago
6 0

Answer:

Air is an great example of elemental mixture.

Sholpan [36]3 years ago
4 0

Answer:

So yes! A mixture can contain just elements if those elements are not chemically reactive to one another. Air is a great example of an elemental mixture as it contains nitrogen, oxygen, and argon (along with some other compounds).

Explanation:

hope this helps you :)

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Explanation:

5 0
2 years ago
A gas occupies 5.31 liters at a pressure of 0.55 atm. Determine the volume at standard pressure.
yuradex [85]

Answer:

Option A; V =  2.92 L

Explanation:

If we assume a lot of things, like:

The gas is an ideal gas.

The temperature is constant.

The gas does not interchange mass with the environment.

Then we have the relation:

P*V = n*R*T = constant.

Where:

P = pressure

V = volume

n = number of moles

R = constant of the ideal gas

T = temperature.

We know that when P = 0.55 atm, the volume is 5.31 L

Then:

(0.55 atm)*(5.31 L) = constant

Now, when the gas is at standard pressure ( P = 1 atm)

We still have the relation:

P*V = constant = (0.55 atm)*(5.31 L)

(1 atm)*V = (0.55 atm)*(5.31 L)

Now we only need to solve this for V.

V = (0.55 atm/ 1 atm)*(5.31 L) = 2.92 L

V = 2.92 L

Then the correct option is A.

7 0
3 years ago
How much cesium (half-life = 2 years) would remain from a 10 g sample after 4 years?
Ksenya-84 [330]
It would be 2.5 g or A.
7 0
2 years ago
Which pairing below does not correctly match the scientist with the contribution to the understanding of the atom? A. Proust and
Lyrx [107]
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5 0
3 years ago
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