When Santa arrived in Texas on Christmas eve, it was cold and snowy and the roofs were very icy. Santa landed his sleigh and stepped out onto the icy roof. As Santa’s foot pushed backward, an equal and opposite force pushed the sleigh forward on the icy surface. Luckily, Rudolph and Dancer kept the sleigh from sliding off the roof! Is this the Law of Inertia (1st), Law of Acceleration (2nd) or Law of Action/Reaction (3rd)? Explain your reasoning.

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

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.

Ahydrogen atom has 1 electron. how many bonds can hydrogen form? a) 1 b) 2 c) 3 d) 4 e) 5