A weather balloon is filled with 80 L of hydrogen gas. The pressure at ground level is 89 kPa, and the temperature is 21 degrees Celsius. As the balloon rises to a certain altitude, the pressure drops to 15 kPa, and the temperature decreases by 90 degrees Celsius. What is the volume of the balloon at this altitude? *Note: Temperatures must be converted to standard (Kelvin).

Think about how you can use le chatelier’s principle to find possible solutions to the design problem. describe at least two ways to increase the yield (amount) of ammonia based on this principle.

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.

What is the polyatamic ion of thiosulfate