The mass of an empty density bottle is 30g. When filled with a liquid, the mass reduces to 38g. Calculate the apparent cubic expansivity of the liquid.

A. 6.25 x 10K-1
B. 6.25 x 10^-3K-1
C. 2.50 x 10^-3K-1
D. 2.50 x 10^-4K-1

Correct Answer: Option B

B. 6.25 x 10^-3K-1

Explanation

Apparent cubic expansivity = mass of hot liquid expelled/mass of hot liquid left x temp. rise

= 2/8×40=0.00625