A 5.00 g sample of spinach was extracted with oxalic acid, diluted with water and an excess of KI, starch and HCl were added. The titration required 20.6 ml and 19.8 ml of 0.073 M KIO3 to turn dark blue in duplicate titrations. How much vitamin C was in 5.00 g of spinach?

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.

Which of these statements explains the difference between nuclear binding energy and the strong nuclear force ?

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.