Increasing the temperature increases the rate of a reaction by doing which of the following?
Potential energy of the products.
Lowering the frequency of effective collisions between reacting molecules.
Increasing the frequency of effective collisions between reacting molecules.
Increasing the activation energy.
Lowering the activation energy

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

Sugar is dissolved in water. which is the solute? sugar neither both water

All motion is caused by force? true or false