emersonriley22 emersonriley22

21-05-2022
Chemistry

contestada

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

Respuesta :

ashish4112119 ashish4112119

21-05-2022

Answer:

154.9475 grams

Explanation:

61.979g/mol is molar mass of Na2O

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

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21-05-2022

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

Answer Link

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