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Ne4ueva [31]
3 years ago
9

What are the standard ways to make a solution of known concentration? (select all that apply.)?

Chemistry
1 answer:
MatroZZZ [7]3 years ago
8 0

1- Molar solutions: based on number of moles of chemical in 1 litre of solution

2- Weight % solution:  the weight of chemical divided by the total weight of the solution (chemical + water) and multiplied by 100.

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What is the number of moles of solute in a .3 molality solution containing .10 kg of solvent?
denpristay [2]
Concentration can be expressed in different forms: molarity, molality, normality, percentage, part per million and many more. For molality, it is a unit of concentration expressed as moles of solute per kilogram of solvent. Therefore,

0.3 = moles solute/0.10 kg solvent
moles solute = 0.03 moles
4 0
3 years ago
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What would be the vapor pressure at 25.0 °c of a solution of 5.00 g of glucose (c6h12o6) in 100.0 g of ethanol (c2h5oh)?
Crank
Use Raoult's Law:
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Explain why ionic compound do not form molecules.
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Explanation:

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3 years ago
Nucleic acids are made of which of the following?
abruzzese [7]

Answer: I believe the correct answer would be A.

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Determine the percent composition by mass of a 100g salt solution which contains 20g salt
prisoha [69]

Answer:

Mass of solution=100g

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glad to help you

hope it helps

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