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leva [86]
3 years ago
12

1 How is the density of a substance calculated? 

Chemistry
1 answer:
user100 [1]3 years ago
4 0
Sorry for the scribbles lol

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Because it has atomic no. = 1 (according to modern periidic table)
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The average volume of a cotton ball is about 5.50 mL. If the mass of the cotton ball is 8.53 g, what is the density of cotton?
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Explanation:

5.5 I believe.

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A sample of wine consists of water, sugar, some amount of ethyl alcohol, and grape juice. These ingredients blend together unifo
NeTakaya

Answer: The sample of wine could be described as numbers 1, 3 & 4

Explanation:

It is a mixture because it is the physical combination of two or more substances

It is a homogeneous mixture because any solid, liquid, or gaseous mixture that has the same proportions of its components throughout any given sample is regarded as a homogeneous mixture

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3 years ago
Calculate the molarity of a solution with 233.772g sodium chloride dissolved in 2,000mL of water
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233,772 g--------x= (233,772 g x1 mol NaCl)/58,5 g= 4 mol NaCl

<em>A solution molar--> moles of solute in 1 L of solution:</em>

2 L-----4 mol NaCl

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3 0
2 years ago
The heat of vaporization for water is 40.7 kJ/mol. How much heat energy must 150.0 g of water absorb to boil away completely? Us
ollegr [7]

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i picked b

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but its based on your own opinion, good luck.

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