Yellow chromate ions (cro4) react with hydrogen ions(2h) in acid to form orange dichromate ions ( if more acid is added to an equilibrium mixture will it become more orange or more yellow?asap

The solution will become more orange.

Explanation:

Start by writing the chemical equation for the equilibrium.

Le Châtelier’s Principle states that if you apply a stress to a system at equilibrium the system will respond in a way that will reduce the stress.  

In this case, the stress is the addition of H⁺ ions.

The system will respond by trying to get rid of the added H⁺ ions.

Thus, the position of equilibrium will move to the right.

More Cr₂O₇²⁻ ions will form, and the solution will become more orange.

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you a

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