What mass of NaC2H3O2 would be needed to make 200.0 mL of a pH 5.00 buffer using solid sodium acetate and 0.150 M HC2H3O2?

What material does not melt at any temperature

We are hoping to create 5.72 grams of glucose. the plant was given 4.75 liters of co2 and 2.81 g of h20. which reactant was the limiting reagent? how much excess mass did we have of the other reactant?

At element makes up all organic compounds?