Answer
(b) 1.05 L of ethanol.
Work Step by Step
To determine which of the given quantities has the greatest mass, we need to calculate their respective masses using their densities and volumes.
(a) The density of water at 20 °C is 0.998 g/mL. Therefore, the mass of 752 mL of water at 20 °C is:
$mass$ = $volume$ x $density = 752 mL \times 0.998 g/mL = 750.5 g$
(b) The density of ethanol at 20 °C is 0.789 g/mL. Therefore, the mass of 1.05 L of ethanol at 20 °C is:
$mass = volume \times density = 1.05 L \times 0.789 g/mL = 828.45 g$
(c) The density of chloroform at 20 °C is 1.489 g/mL. Therefore, the mass of 750 g of chloroform at 20 °C is:
$mass = 750 g$
(d) The density of balsa wood is approximately 0.15 g/cm³. Therefore, the volume of the cube of balsa wood is:
$volume = (19.20 cm)³ = 7077.888 cm³$
The mass of the cube of balsa wood is:
$mass = volume \times density = 7077.888 cm³ x 0.11 g/cm³ = 778.57 g$
Therefore, the greatest mass among the given quantities is (b) 1.05 L of ethanol.
