Asample of helium gas occupies a 10 cubic meter container at stp (273 k, 1 atm). what will the approximate volume become when the pressure is 1.5 atm and the temperature is 32 oc?
a. 5.4 cubic meters
b. 7.5 cubic meters
c. 9.2 cubic meters
d. 11.4 cubic meters

Which traits do human embryos have that link them to a common ancestor with fish and reptiles? a. scales and tail b. gill slits and scales c. tail and gill slits d. hair and tail

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.

Sugar is dissolved in water. which is the solute? sugar neither both water