Question

A mixture of coarse sand and sugar is 45.0 percent sand by mass. 120.0 grams (g) of the mixture is placed in a fine-mesh cloth bag and dunked repeatedly in Lake Michigan. After drying, the mass of the contents of the bag equals: ________.
A. 66.0 g
B. 120.0 g
C. 65.0 g
D. 72.00 g
E. 54.0 g

Answer 1

Answer:

Option E

Explanation:

From the question we are told that:

Amount of sand in percentage $s_p=45%$

Sample size$n=120g$

Note:After being dumped in the river repeatedly the sugar melts away leaving behind the insoluble sand

Generally the equation for Amount of sand content is mathematically given by

 $X=n*s_p$

 $X=120*\frac{45}{100}$

 $X=54g$

Therefore

After drying, the mass of the contents of the bag equals

 $X=54g$

Option E