There is an unlabeled bottle in the storage cabinet. give a list of tests that might you identify the
substance as a possible danger. what kinds of information might lead you to believe it is dangerous?

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

Which of the following is a chemical property of water at 4 c

Sand is more likely than shale to preserve fossils. true false