Identify and explain two factors that can speed up the rate of a reaction.

# Temperature

When temperature increases, particles gain more kinetic energy and move faster. The number of reactant particles with enough activation energy or more increases. Therefore, frequency of collisions and successful collisions increases. Hence, rate of reaction increases.

# Concentration

When concentration increases, number of particles per unit volume increases. The frequency of collisions increases, so the chance for successful collisions and collisions increases. Due to this, rate of reaction increases.  

the answer is   c.) 1575 j.

explanation:

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

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