mental blank

[Rowyrow]

Im making up 150mol of 1 M CuSO₄, now for some reason (probably cause it's monday) im confused about how much water I add. Do I measure out the 37.45 g of CuSo₄ and add 150mls of water or do I measure out the 37.45g of CuSO₄ and fill with water to the 150ml line? I kneo it's not going to make much of a difference either way casue it's only 150mls but my brain is stumped

[smiley]

Add the Cu SO4 to about 100mls of water & stir to dissolve. THEN make solution up to 150mLs. It won't be easy BTW. I think CuSO4 has a saturation point of 1.something M anyway.