Using only the periodic table, determine the element that displays each given trend. be sure to provide your reasoning.

choose the element that is more reactive: oxygen or argon.
choose the element that has the larger atomic radius: francium or sodium.
choose the element that has the smaller atomic radius: scandium or selenium.
choose the element that has more ionization energy: bismuth or mercury.
choose the element that has less ionization energy: nitrogen or phosphorus.
choose the element that has more electronegativity: xenon or silver.
choose the element that has less electronegativity: titanium or hafnium.

Does the temperature affect the solubility of sugar and salt in water? if it does tell me like different temperatures with different solubilities so i can sketch down a graph

Water (2510 g ) is heated until it just begins to boil. if the water absorbs 5.09×105 j of heat in the process, what was the initial temperature of the water?

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.