What's a third reaction? (Chemistry)

Which describes interactions between substances and stomata during photosynthesis? check all that apply. oxygen enters stomata. oxygen is released through stomata. carbon dioxide enters stomata. carbon dioxide is released through stomata. hydrogen enters stomata. hydrogen is released through stomata.

What happens to the atomic radius when an elctron is lost

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.