Calculate the amount of energy require to melt 200.0 g of solid iodine.

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

A1.5l container holds p.50 grams of an unknown gas at a pressure of 0.44 atm and a temperature of 50.c what is the molar mass of the unknown gas