kayumajoy31 kayumajoy31

25-04-2021
Chemistry

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calculate the mass of sodium hydroxide needed to make a 5.00L with a molarity of 0.400M

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zhihangan zhihangan

25-04-2021

Answer:

79.994g NaOH

Explanation:

The formula for molarity is M=moles of solute/Liters of solution, M=n/L

You are given L and M, so 0.4=n/5

n (moles of solute) = 2

2 moles of NaOH, multiplied by the molar mass of NaOH (39.997) to get the mass needed: 79.994g

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