Carbon-14 has a half-life of 5,730 years. how long will it take for 112.5 g of a 120.0-g sample to decay radioactively? a. 5,730 years. b. 11,460 years. c. 17,190 years. d. 22,920 years

Note that when 60.0 g decays from the 120.0 g sample, one half-life has elapsed. When 30 g decays from the 60.0 g, another half-life has elapsed. When 15 g decays from the 30 g, another half-life has elapsed. So far, 60.0 g + 30.0g + 15.0 g = 90 g have decayed and three half-life have elapsed. When 7.5 g decays from 15.0, you calculate that 90.0 + 7.5g = 112.5 g have decayed in 4 half-life time. So, it will take 4 * 5,730 years = 22,920 years for 112.5 g of a 120.0 g sample to decay radioactively. option D. 22,920 years

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later

The answers is bad germs in their