"What is the percent yield of H2O from a reaction if only 40g of water was recovered by reacting H2 and O2 gas in a reaction where 50 g of water was expected to be formed as the product?" a. 0.8%
b. 80%
c. 125%
d. 75%

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.

Suppose you mix one mole of sulfuric acid (h2so4) with 1 mole of sodium hydroxide(naoh). why does the ph of the solution remain below 7? ( explain so i can get better understanding! )

What is another way to determine mass times acceleration?