What is the percent composition of calcium (Ca) in CaO? A.
40 g
56 g
X 100%
ОВ.
56 g
40 g
X 100%
C.
16 g
56 g
x 100%
40 g
D.
x 56 g
100%

What is the equilibrium constant of aa+bb=cc+dd

Given that 1 mi = 1760 yd, determine what conver- sion factor is appropriate to convert 1849 yd to miles; to convert 2.781 mi to yards.

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.