I have two questions: 1. If a gas occupies 1207.2 mL at standard temperature, what volume does it occupy at 72 ºC if the pressure remains constant?

2. The volume of a 45.38 g sample of methane gas is 20.2 L at 38.4 °C and 5.61 atm. What will its volume be at 78.5 °C and 2.9 atm?

How many grams of n2h4 will be consumed by 23 g of n2o4

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.

Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by