PLEASE HELP! A compound has a molar mass of 165.59 g/mol. If you have 736.155 grams of this compound, how many moles do you have?

How many atoms are there in 5.70 mol of mg

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

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.