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galina1969 [7]
3 years ago
10

What exactly are impurities?

Chemistry
1 answer:
Tatiana [17]3 years ago
4 0

Answer:

An impurity is something that ruins the uncontaminated nature of something. If someone accuses you of impurity, they think you or your nature has been spoiled in some way by sin. When water is pure, the only thing in that water is water.

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Express the answer in scientific notation and with the correct number of significant figures: (6.32 x 10-4) ÷ 12.64
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Which of the following statements BEST explains dissolution?
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A 3.56 L balloon is compressed to 1.00 L at constant temperature. If the initial pressure in the balloon was 101.3 kPa, what is
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Calculate the molarity of each solution.
weeeeeb [17]
Q1)
molarity is defined as the number of moles of solute in 1 L solution 
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since molarity is number of moles in 1 L 
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Q2)
the mass of C₂H₆O in the solution is 72.8 g
molar mass of C₂H₆O is 46 g/mol 
number of moles = mass present / molar mass of compound
the number of moles of C₂H₆O - 72.8 g / 46 g/mol 
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volume of solution - 2.34 L
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Q3)

Mass of KI in solution - 12.87 x 10⁻³ g
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number of mole of KI = mass present / molar mass of KI
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volume of solution - 112.4 mL 
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therefore number of moles in 1000 mL- 0.0775 x 10⁻³ mol / 112.4 mL x 1000 mL
molarity of KI - 6.90 x 10⁻⁴ M
8 0
2 years ago
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