Density is an easy way to distinguish between gold (density: approx. 19 g/cm3), fool's gold (density: approx. 4.5 g/cm3), and sand (density: approx. 2.5 g/cm3). If a large golden rock has a mass of 212 g and a volume of 56 cm3, which type of mineral is it

How many liters of hydrogen gas will be produced at stp from the reaction of 7.179×10^23 atoms of magnesium with 54.219g of phosphoric acid (h3po4) the equation is 3mg + 2h3(> mg(po4)2+3h2

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.

The atom fluorine generally will become stable through the formation of an ionic chemical compound by accepting electron(s) from another atom. this process will fill its outer energy level of electrons.