Question

what is the molarity of a solution containing 20 grams of naoh in 500 milliliters of solution

Answer 1

NaOH that is

Answer 2

Units for molarity are: \(\frac{ moles }{ mL }\). So,convert NaOH to moles and divide by the volume given (convert the volume to mL)

Answer 3

how do you convert to moles? :(

Answer 4

Well, you're given 20 grams of NaOH. Use dimensional analysis to cross cancel like terms and get moles. Remember, just add up the molar masses of Na + O + H. They should be in units of: \(\frac{ g }{ mole }\)

Answer 5

Ok thanks so much