A solution is made by adding 0.390 g Ca(OH)2(s), 50.0 mL of 1.00 M HNO3, and enough water to make a final volume of 75.0 mL. Part A Assuming that all of the solid dissolves, what is the pH of the final solution? Express your answer using three decimal places. pH = nothing Request Answer Provide Feedback

the answer is 0.8m.

by: nicholas

answer carbon and three oxygen atoms;

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o