Asolution has [h3o+] = 4.2×10−5 m . use the ion product constant of water kw=[h3o+][oh−] to find the [oh−] of the solution.

Which material produces static charge when rubbed ?

What mass of carbon dioxide is produced from the complete combustion of 4.50×10−3 g of methane?

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.