How many grams of sodium sulfate (na2so4) are required to make 4.5 liters of a 3.0M solution?

Question

Molar mass of Na is 23 g/mol, S is 32 g/mol, O is 16 g/mol.

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Answer 1 · 2016-05-05T05:56:56

Approx #2# #kg# of salt are required.

If #4.5*L# of a #3.0*mol*L^-1# solution are required, this is a molar quantity of #4.5*Lxx3.0*mol*L^-1=13.5*mol#.

Now, we simply multiply this molar quantity by a molar mass to get the mass:

#13.5*molxx142.04*g*mol^-1# #=# #??*g#