During an adiabatic expansion, the temperature of 0.1mole oxygen(diatomic molecule) dropped from 30°C to 10°C. find W, Q, and ∆H

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

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

How many liters of oxygen gas, at standard temperature and pressure, will react with 35.8 grams of iron metal? 4 fe (s) + 3 o₂ (g) → 2 fe₂o₃ (s)