Question

ose
of
5. If 60g of sugar is dissolved in 180 g of water, the
concentration of solution is
(a) 60%
(b) 40%
(C) 25%
(d) 75%
6. How many molecules of H20, are present in 68 g of
H202?
(a) 6.022 x 1023
(b) 12.044 x 1023
(c) 3.011 x 1023
(d) 24.088 x 1023
7. The cost of sucrose (sugar)C12H22011 is 20 per kg. Its
cost per mole is
(a) * 3.60
(b) *7.20
(c) 4.00
(d) * 10g
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Answer 1

Answer 5 concerntration of solution = mass of solute/mass of solution

concerntration = 60/240*100

= 25%