What is the main purpose of the light-dependent reactions a: to energize electrons b: to make glucose c: to produce carbon dioxide d: to make oxygen pl me !

What does the mass of 0.7891 mol of ferric oxide (fe2o3)

If a solution contains 3 moles/liter of sodium chloride (nacl, made of sodium ions and chloride ions), what is the osmolarity of this solution

Ariver current has a velocity of 5km/h relative to the shore, and a boat moves in the same direction as the current at 5 km/h relative to the river. how can the velocity of the boat relative to the shore be calculated?