During a chemical reaction, a fixed amount of Iron combines completely with a fixed amount of oxygen to form Iron oxide. Which statement best describes the mass of the iron odide that is produced?
a)The mass is equal to the mass of the Iron minus the mass of the oxygen before reacting.
B)The mass is equal to the mass of the Iron plus the mass of the oxygen.
C)The mass is greater than the combined mass of both the Iron and the oxygen
D)The mass is less than the mass of the Iron but greater than the mass of the oxygen before reacting.

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

why is cellular respiration important for homeostasis?

it changes food into energy that the organism can use.

which of the following is most likely to happen if a cell is not able to divide?

the cell will not be replaced when it is damaged.

explanation:

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.