How many moles of gas does it take to occupy 14 liters at a pressure of 6.7 atmospheres and a temperature of 275 K? R = 0.0821

Ithink is d. physical property

Heat is involved in chemical change in two ways; chemical changes either result in heat being added to or removed from an object, and chemical changes require a certain amount of heat before they can take place.

Idon’t know what the answer is i wish i could

Answer///precipitate;