If a temperature increase from 10.0 ∘c to 21.0 ∘c doubles the rate constant for a reaction, what is the value of the activation barrier for the reaction

The excretory system,need answers for all: )

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of