Nitrogen has a density of 1.17 x 10^-3 g/cm^3. if you have 2,500 cm^3 of nitrogen gas, which of the following is the correct mass of nitrogen, using significant figures?

a. 2.92 g

b. 2.2 x 10^6g

c. 14 x 10^6g

d. 2.9 g

I think the correct answer from the choices listed above is option D. The correct mass of nitrogen would be 2.9 g. The mass is calculated by multiplying the density and the volume of the substance. The correct answer should have two significant figures since it is the least precise operation.

The ball stops moving because of friction force. Friction is the force that opposes all motion. Therefore, the answer is friction force...