How many bonding electrons and lone pairs would fluorine have

What are the spectator ions in 2h+ + so42- + ca2+ + 2r → caso4 + 2h+ + 21?

The missing component to the table to the right or indicated with orange letters complete the table by filling in the corresponding numbers or symbols

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?