Answer
(a) 25.86 g of water.
(b) 1720.5 g of water.
Work Step by Step
(a)
$$16.2\% = \frac{5.00}{5.00 + x} \times 100\%$$
$$\frac{16.2\%}{100 \%} = \frac{5.00}{5.00 + x} $$
$$0.162= \frac{5.00}{5.00 + x} $$
$$0.162(5.00 + x)= 5.00 $$
$$0.810 + 0.162x= 5.00 $$
$$0.162x= 4.19$$
$$x=25.86$$
(b)
$$1.5\% = \frac{26.2}{26.2 + x} \times 100\%$$
$$\frac{1.5\%}{100 \%} = \frac{26.2}{26.2 + x} $$
$$0.015= \frac{26.2}{26.2 + x} $$
$$0.015(26.2 + x)= 26.2 $$
$$0.393 + 0.015x= 26.2 $$
$$0.015x= 25.807$$
$$x=1720.5$$
