Calculate the mass (in kg) of one golf ball

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

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?

The biosphere of the earth is made up of . a. inorganic b. organic