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coldgirl [10]
3 years ago
7

A liquid that occupies a volume of 2.68 l has a mass of 2.40 kg what is the density of the liquid in kgl/?

Chemistry
1 answer:
SashulF [63]3 years ago
5 0
<span>As we know the formula for density is .. Density = Mass/ Volume
   
So therefore putting in the values we get..
   
D=2.40/2.68
   
D= 0.89 kg/l</span>
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Answer:

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How many neutrons does element X have if its atomic number is 31 and its mass number is 80?
MrRissso [65]

49 neutrons in each nucleus.

<h3>Explanation</h3>

For each nucleus:

Mass number = Number of protons + Number of neutrons.

The atomic number of a nucleus is the same as its number of protons. The atomic number of the nucleus here is 31. There are 31 protons in each nucleus.

  • Mass number = 80;
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Again,

Mass number = Number of protons + Number of neutrons.

80 = 31 + Number of neutrons.

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3 years ago
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scZoUnD [109]

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7 0
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5. A box with a volume of 22.4 L contains 1.0 mol of nitrogen and 2.0 mol of hydrogen at 0°C. Which of the following statements
love history [14]

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Given

volume = 22.4 L

1.0 mol of nitrogen and 2.0 mol of hydrogen at 0°C

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PV = nRT

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3 years ago
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gizmo_the_mogwai [7]
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