Genchem. stoichiometry question.

[exderwall]

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How many grams of NaOH (40 g/mol) are there in 250 mL of 0.4 M NaOH solution?

 

[Erhatstil]

4 (M=moles/litres)

 

[exderwall]

anyone knows how to get the answer?

 

[Maygyver]

Do 0.4/4 to get moles of NaOH and then multiply that by the molar mass of NaOH for grams.

 

[Avery07]

250mL(1L/1000mL)(0.4mol/1L)(40g/1mol) = 4g NaOH