Which substance will combine with oxygen gas to produce a greenhouse gas?
a. na
b. s
c. h₂
d. ne
e. c

Which statement describes both homogeneous mixtures and heterogeneous mixtures?

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.

How many atoms are there in 5.70 mol of mg