What is the percent composition, by mass, of a solution prepared by dissolved 10 grams of hydrochloric acid in 40 grams of water? *
(i don’t need work just an answer)

with this one i know the answer in craters one reason i looked it up and i learned about it there is my evidence

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l