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mr_godi [17]
2 years ago
14

If you use 19 mL of 0.100 M KMnO4, how many moles have you used? The answer has to be in four decimal places (do not forget the

leading zero). No scientific notation.
How much 5.0 M H2SO4 needs to be used to make 152 mL of 1.0 M? Round answer to nearest whole number and omit units.
Chemistry
1 answer:
Scorpion4ik [409]2 years ago
3 0
1)

Volume = 19 / 1000 = 0.019 L

n = M * V

n = 0.100 * 0.019

n = 0.0019 moles
__________________________

2)

 M₁ * V₁ = M₂* V₂

5.0 * V₁ = 1.0 * 152

5.0 V₁ = 152

V₁ = 152 / 5.0

V₁ = 30.4 mL
______________________________________

<span>hope this helps!</span>
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