At 40°c how much potassium nitrate can be dissolved on 300g of water?

Which of these conditions most likely produces an unstable isotope?

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d