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Non-Ideal Solutions

5.64 of sugar...

Question

5.64 of sugar & 2.395g of table salt were mixed with 30.1g of water . What is the mass of the solution reported to the correct number of significant figures?

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Solution

$M a s s o f t h e s o l u t i o n = \frac{W e i g h t o f t h e s o l u t e}{W e i g h t o f t h e s o l v e n t} \times 100 M a s s o f t h e s o l u t i o n = m a s s o f s u g a r s o l u t i o n + m a s s o f s a l t s o l u t i o n = \frac{5.64}{30.1} \times 100 + \frac{2.395}{30.1} \times 100 = 18.73 + 7.96 = 26.69 % N o o f s i g n i f i c a n t f i g u r e = 4$

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