Answer:
The correct answer is B. A compound that is a hydrogen ion acceptor in an acid-base reaction
Since solubility decreases rapidly as the diver returns to the surface, the risk of having “the bends” is greater as the diver returns to the surface.
The solubility of a gas refers to the amount of the gas that dissolves in a liquid. Solubility of a gas is dependent on pressure. The greater the pressure, the higher the solubility of the gas and vice versa.
Pressure increases with depth as a diver moves down the sea. More pressure is exerted, the deeper the diver goes. This means that solubility of nitrogen in blood increases at a greater depth.
As the diver returns to the surface, the pressure decreases rapidly and the solubility of nitrogen also decreases suddenly making the risk of “the bends” to be greater as the diver returns to the surface.
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Answer:
c. it involves a series of steps, each of which generates a reactive intermediate that brings about the next step
Explanation:
A chain reaction consist of many repeating steps. Chain reaction will never stop until all the reactant has been exhausted. It is more of a cycle of reaction that generate a reactive intermediate that brings about the next step.
Example of a chain reaction is the chlorination of methane.
CH4 + Cl2 ↔ CH3Cl + HCl
CH3Cl + Cl2 ↔ CH2Cl2 + HCl
CH2Cl2 + Cl2 ↔ CHCl3 + HCl
CHCl3 + Cl2 ↔ CCl4 + HCl
