2. Knowing that each hour of the clock is about 375 million years, determine how many hours each eon takes up on our 12-hour clock. For example, if an eon took 750 million years, that would take up two hours of the clock.

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

7. in the cycle, a virus integrates its dna into the host's dna, and its dna is replicated when the host dna is replicated. a. infectious b. retroviral c. lysogenic d.lytic