Two forces 3n and 4n act on a 20kg mass. calculate the magnitude of their resultant force if the angle between the two forces is 60°

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

The experiment was repeated many years later but the gases were mixed in a different type of container. a white solid was obtained which was xenon fluoride. predict whether you think 1) krypton and 2) radon will react with fluorine. explain reasons for your predictions

Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air