If 5 grams of compound A produces 20 grams of compound C, and 5 grams of compound B produces 10 grams of compound C, what is the excess reactant? A + B->C + D

Compound A

Compound B

Compound C

Compound D

What is the polyatamic ion of thiosulfate

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.