Astudent calculated that the amount of nacl that should form in the lab (theoretical yield) is 2.50 grams. the actual amount formed was only 2.30 grams. how would you calculate the student’s percent yield? a) 92% b) 0.92% c)108% d) 1.08 %

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.

Which is true according to the law of conservation of energy