THE ANSWER IS:
4.76%
explanation: you have to add the 2.5 grams with the 50 grams to get 52.5g, then you take the 2.5 gram of NaOH which is what they ask you to find the percent mass of, and (2.5grams/52.5grams) x 100
the resulting answer should be 4.76%
this is called percent by mass
WHAT IS THE PERCENT MASS OF SODIUM HYDROXIDE IF 2.5G OF naoh ARE ADDED TO 50.00G OF H20?
1 answer