A45.30 g sample of solid mercury is initially at –59.00°c. if the sample is heated at constant pressure ( = 1 atm), kj of heat are needed to raise the temperature of the sample to 30.00°c.

If the same amount of cacl2 is added to equal volumes of water and maple syrup, which will have the higher temperature?

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.

Ais a mountain created from eruptions of lava, ash, rocks, and hot gases.