Calculate the density of solid, when mass of the solid is 90 g, initial volume of water in the measuring cylinder is 34 ml and final volume

Critical mass is the of material required to produce a chain reaction. a.) minimum amount b.) atomic mass c.) precise amount d.) maximum amount

Oxygen and hydrogen gas are at the same temperature t.what is the ratio of kinetic energies of oxygen molecule and hydrogen molecule if oxygen is 16 times heavier than hydrogen.

What is the temperature in degrees celsius of a substance with a tempature of 49k