Zn (s) + HCl (aq) → ZnCl2 (aq) + H2 (g) a) Balance the chemical equation b) Calculate the mass of zinc required to react with 19.1 mL of 2.36 M HCl solution.

Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

What is the greater volume 72 quarts or 23 gallons

Big boi and travis scott are performing at the super bowl. travis scott is 62 years younger than twice big boi’s age. the sum of their ages is 70 years old. use b to represent big boi’s age. write and solve an equation.