Find the number of gallons of a 50% alcohol solution, x, that should be mixed with 10 gallons of a 35% solution in order to get a 40% solution.

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?

Determine the reaction and balance the following equations urgent due in the morning

What produces wave a)sound b) heats c)transfer of energy d)vibrations