What is the approximate mass of 25 cm3 of silver, if the density is 10.5 g/cm3?

The approximate mass of silver is around 263 g

Explanation:

Given:

Volume of silver, V = 25 cm3

Density of silver, D = 10.5 g/cm3

To determine:

Mass of iron, M

Explanation:

Density (D) of a substance is the mass (M) occupied by it in a given volume(V). Mathematically it can be expressed as the ratio of mass by volume

I.e.

For the given piece of silver:

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e