How is a pure substance different from a mixture? a. mixtures can be separated by physical means b. pure substances are made up of mixtures c. a pure substance is heterogeneous d. a mixture is made of one substance

Velocity is a description of both speed and direction, therefore it - a vector - a force arrow - the same as acceleration - a magnitude

Which of the following is not am example of a polymer? protein nylon kevlar concreta

Abag of potato chips contains 2.00 l of air when it is sealed at sea level at a pressure of 1.00 atm and a temperature of 20.0 deg c. what will be the volume of the air in the bag if you take it with you, still sealed, to the mountains where the temperature is 7.00 deg c and atmospheric pressure is 70.0 kpa? assume that the bag behaves like a balloon and that the air in the bag is in thermal equilibrium with the outside air.