8. What is the empirical formula for C4H8O4?

What metric units would you use to measure the thickness of a key

Nitrogen dioxide decomposes according to the reaction 2 no2(g) ⇌ 2 no(g) + o2(g) where kp = 4.48 × 10−13 at a certain temperature. if 0.70 atm of no2 is added to a container and allowed to come to equilibrium, what are the equilibrium partial pressures of no(g) and o2(g)

Which answer below correctly identifies the type of change and the explanation when magnesium comes into contact with hydrochloric acid