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i did this experiment at school and i need to know how to change these solutions below into a molar. can anyone tell me how to do this or just convert the ones underneath.
thankyou

0.9 parts water. 0.1 part sugar
0.8 parts water. 0.2 parts sugar
0.7 parts water. 0.3 parts sugar
0.6 parts water. 0.4 parts sugar
0.5 parts water. 0.5 parts sugar

2007-03-20 06:20:36 · 2 answers · asked by Anonymous in Science & Mathematics Chemistry

2 answers

Again !!?

Molarity = moles of solute ÷ litre of solution

Moles of sugar = C12H22O11 = 144 + 22 + 176 = 342
= 342 moles: 9 parts = (342/10 x 9) = 307.8

1)...Molarity = 307.8g sugar ÷ 1000 g water
Molarity = 0.308 M sugar

2). 342 moles: 8 parts = (342/10) x 8) = 273.6
= 273.6 ÷ 1000
Molarity = 0.274 M sugar

3). ... Continue

2007-03-20 07:33:22 · answer #1 · answered by Norrie 7 · 0 0

Molarity = number of moles of solute (this will be your sugar) divided by the number of litres of solution


All i can give you is this, if you had written out some more information it would have made it a little easier for everyone :)

best of luck with your studies,

j x

2007-03-20 13:40:33 · answer #2 · answered by jorja_leigh 3 · 0 0

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