Explain the impact that changing concentrations has on a system in a state of dynamic equilibrium. What will happen when reactants are added to a reversible reaction mixture at equilibrium ?

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Explanation:

If we increase the concentration of one of the reactants; the equilibrium can reduce its concentration by favouring the forwards reaction and producing more of the products. ... The net result of increasing the concentration of the reactants would be the production of more of the products at equilibrium.

An insect would have an easier time walking on the surface of water than on the surface of ethanol.

Water's stronger intermolecular forces lead to higher surface tension.

Higher surface tension allows water to support the insect.

Explanation:

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.