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aleksandr82 [10.1K]
4 years ago
11

Density is given in ____. a. Pa/cm3 c. g/s2 b. N/m2 d. g/cm3 Please select the best answer from the choices provided A B C D

Chemistry
2 answers:
Ray Of Light [21]4 years ago
7 0
Density is given in Mass/Volume so the answer is D
serg [7]4 years ago
7 0
Indeed Density (d) is in fact given in
g \div {cm}^{3}
Answer [D].

Since density (d) is a measurement of a substance's mass per volume, or d = m/v, we can see that units would be in g, kg, etc for mass and mL, L, etc for volume. And then where does
{cm}^{3}
come from?? Well 1 mL of water occupies a cylindrical space of 1 cubic cm.
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The concentration in molality of hcl in a solution that is prepared by dissolving 5.5 g of hcl in 200.0 g of c2h6o is __________
PIT_PIT [208]

Molality is one way of expressing concentration of a solute in a solution. It is expressed as the mole of solute per kilogram of the solvent. To calculate for the molality of the given solution, we need to convert the mass of solute into moles and divide it to the mass of the solvent.

<span>
Moles of HCl = 5.5 g HCl ( 1 mol HCl / 36.46 g HCl ) = 0.1509 mol HCl</span>

<span>
Molality = 0.1509 mol HCl / 200 g C2H6O ( 1 kg / 1000 g )
Molality = 0.7543 mol / kg</span>


<span>The concentration in molality of hcl in a solution that is prepared by dissolving 5.5 g of hcl in 200.0 g of c2h6o is 0.7453 molal.</span>
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1. Write the name meaning
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A chemist determines by measurements that .060 moles of nitrogen gas participate in a chemical reaction. Calculate the mass of n
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In order to convert moles of nitrogen gas (N₂) to grams, we'll use its molar mass:

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0.060 only has two significant digits, so the reported answer should have two significant digits as well. Meaning the answer is 1.7 g.

4 0
3 years ago
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