Professor williams wrote some statements on the board: 1. newton observed an apple falling off a tree and speculated that all things on earth are subject to the force of gravity. 2. he repeatedly tested his idea. 3. he found that any two objects in the universe have a gravitational attraction to each other. 4. his findings cannot be edited or replaced. professor williams is discussing a theory. a hypothesis. a law. an explanation.

1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.

Word equation for k(s) +h2o(l) yield koh (aq) + h2

What natural processes produce large quantities of co2