How many moles of solid naf would have to be added to 1. 0 l of 0. 286 m hf solution to achieve a buffer of ph 3. 78? assume there is no volume change. Ka for hf = 7. 2 × 10 –4.

In which layer of earth do most earthauakes occur a_ inner core b_outer core c_mantle d_crust

Which characteristic of water it form droplets? a. low specific heat b. nonpolar structure c. high surface tension d. ability to dissolve substances

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