Calculate the concentration of a solution made by diluting 87.0 mL of 4.9 M HBr to a final volume of 575.0 mL. Significant figures are graded for this problem.

Question

I'm not sure how to solve this problem. Any help would be super appreciated.

Answer 1

Using C₁ • V₁ = C₂ • V₂

(4.9 M)(87.0 mL) = C (575 mL)

C = 0.74 M (2 significant figures because 4.9)

Answer 2