Question

A solid weighs 20 grams in air and 18 grams in water. Find the specific gravity of the solid.

(a) 0.9
(b) 1.11
(c) 2.22
(d) 10.0

Answer 1

The specific gravity of the solid can be found by using the formula: Specific Gravity = Density of the Solid / Density of Water. The density of the solid can be calculated using the difference in weight when it is in air and when it is in water. The specific gravity of the solid is equal to its average density.

Step-by-step explanation:

The specific gravity of the solid can be found by using the formula:

Specific Gravity = Density of the Solid / Density of Water

The density of the solid can be calculated using the difference in weight when it is in air and when it is in water. In this case, the difference is 20 grams - 18 grams = 2 grams. The density of the solid is then calculated by dividing the mass difference by the volume of water displaced. Since the volume of water displaced is equal to the volume of the solid, the density of the solid is 2 grams / volume of the solid.

Now, we can substitute the calculated density of the solid into the specific gravity formula:

Specific Gravity = Density of the Solid / Density of Water = 2 grams / volume of the solid / 1 gram/cm^3

Therefore, the specific gravity of the solid is equal to its average density, which can be calculated as 2 grams / volume of the solid.