Which statement best relates an empirical formula with a molecular formula

Based on the law of conservation of energy, which statement is false? answer- energy is lost when machines dont work right

What does the mass of 0.7891 mol of ferric oxide (fe2o3)

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.