To make a 4.00 M solution, how many moles of solute will be needed if 12.0 liters of solution are required?

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

Identify and describe the three ways that mutations affect organisms.

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?