How many grams of Na2O are needed to make 10.0 L of a 0.250 M solution?

asked Oct 8, 2023 18.8k views

19 votes

by Essah

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n[Na2O]= CxV
We have C= 0.250M, V=10.0L
So n[Na2O]= 0.250x10.0=2.5mol
M[Na2O]=62g/mol
—> m= nxM = 2.5x62=155g

7.7k points

11 votes

Answer:

154.9475 grams

Step-by-step explanation:

61.979g/mol is molar mass of Na2O

61.979g/mol times .250 M times 10L = 154.9475 grams

Chribsen answered Oct 15, 2023

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