Which would have the greatest attractive force between particles?. A)Water at 200 degrees
B)Oxygen at 54 degrees
C)Neon at 162 dgrees
D)Hydrogen at 323 degrees

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.

Dumbledore decides to gives a surprise demonstration. he starts with a hydrate of na2co3 which has a mass of 4.31 g before heating. after he heats it he finds the mass of the anhydrous compound is found to be 3.22 g. he asks everyone in class to determine the integer x in the hydrate: na2co3·xh2o; you should do this also. round your answer to the nearest integ

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