I need help with these 3 questions quickly. I'll mark your answer brainliest and give you a lot of points.

For #15 my answer from #12 is 80kJ

Which of the following is not a true statement about dwarf planets? a the kuiper belt contains comets, asteroids, and dwarf planets. b ceres is a dwarf planet located in the kuiper belt. c the largest known dwarf planet in the solar system is named eris.

Summarize possible ways in which phases of matter could combine to form a solution.

The number at the end of an isotope’s name is the number.