Which statement best describes the relationship between activation energy and rate of reaction?
Increasing the activation energy can increase the rate of a reaction.
Reducing the activation energy can increase the rate of a reaction.
There is no relationship between activation energy and rate of a reaction.
Reducing the activation energy can decrease the rate of a reaction.

Reducing the activation energy can increase the rate of a reaction.

Explanation:

Reducing the activation energy can increase the rate of a reaction.

Explanation: The rate of a chemical reaction can be defined as the rate of the formation of products or the rate of disappearance of reactants. Activation energy of a reaction is an energy barrier that must be overcome before the reaction can occur. It is the minimum amount of energy that can be possessed by the reactants before products can be formed. Lowering the activation energy of a reaction will therefore increase the rate of the reaction because the reactants will possess enough energy to easily overcome the barrier.

hypoxemia refers to a below usual concentration of oxygen in the blood, mainly in the arteries. hypoxemia is an indication of an issue associated with circulation or breathing and may lead to various symptoms like shortness of breath.  

the condition is identified by determining the level of oxygen in the blood sample obtained from an artery. it can also be predicted by determining the oxygen saturation of the blood with the application of a pulse oximeter.  

the normal arterial oxygen is about 75 to 100 mm hg. the values underneath 60 mm hg is generally considered with the requirement for supplemental oxygen. the normal pulse oximeter readings generally range between 95 to 100 percent. the values under 90 percent are regarded as low.  

in the given case, the oxygen saturation is measured at 93 percent, hence, there is no need to administer oxygen, that is, one should withhold oxygen.