61. If a 1.0 M solution of HA, a weak acid, has a pH of 2.0, then the value of Ka, the acid-dissociation constant, for HA is closest to A. 1.0 × 10-4 B. 1.4 × 10-4 C. 1.0 × 10-2 D. 1.4 × 10-2 E. 1.4 × 10-1

Listenbase your answer to the question on the information below.nuclear radiation is harmful to living cells, particularly to fast-growing cells, such as cancer cells and blood cells. an external beam of the radiation emitted from a radioisotope can be directed on a small area of a person to destroy cancer cells within the body.cobalt-60 is an artificially produced radioisotope that emits gamma rays and beta particles. one hospital keeps a 100.0-gram sample of cobalt-60 in an appropriate, secure storage container for future cancer treatment.which choice represents the correct product for the beta decay of the co-60? fe-60ni-60fe-61ni-61

What three things does a balanced equation show you?

Which of two curves exhibits exponential growth