PLZ HELP ASAP. a solution of salt and water contains 50 grams of water per 100 millimeters of the solution. If 1 mole weighs 16 grams, _____ moles of water would be present in 25 millimeter of the solution. (round of your answer to 2 decimal places

Question

anonymous · Answer

50 grams per 100 mm
1 mole weighs 16 grams so 50/16 = 3.125 moles

3.125/100 = x/25 (3.126 moles to 100 mm = x moles to 25 mm)
cross multiply
100x = 78.125
x = 78.125/100
x = .78125 moles

anonymous · Answer

u sure right

anonymous · Answer

oops...round it to 0.78

anonymous · Answer

I think so. That is what I would put if it were my paper.

anonymous · Answer

ok... how old r u by the way just asking

anonymous · Answer

I do not give out my age. I am old enough :)

anonymous · Answer

ok lol and thx

anonymous · Answer

anytime :)