Question

A chemist has a block of copper metal (density is 8.96 g/mL). They drop the metal into a graduated cylinder containing water, and find the volume change is 1.30 mL. What is the mass of the block, in grams

Answer 1

Answer:

11.648 g

Explanation:

From the question,

Note: an object immersed in a fluid, displaced an amount of fluid, equal to its volume.

Density = mass/volume.

D = M/V................................................................ Equation 1

Where D = density of the copper block, M = mass of the copper block, V = volume of the copper block.

make M the subject of the equation

M = D×V......................................... Equation 2

Given: D = 8.96 g/mL, V = 1.3 mL

Substitute into equation 2

M = 8.96×1.3

M = 11.648 g

Hence the mass of the block is 11.648 g