What is the density of a wood board whose dimensions are 5.54 cm x 10.6 cm x 175 cm and whose mass is 28,600 g?

What effect does nuclear radiation have on atoms?

If i initially have a gas at a pressure of 12 atm, a volume of 23 liters, and a temperature of 200 k, and then i raise the pressure to 14 atm and increase the temperature to 300 k, what is the new volume of the gas?

What happens to isotopes that are unstable?