Which does not affect the rate of pulmonary and systemic gas exchange?

a. partial pressure of the gases.

b. surface area available for gas exchange.

c. diffusion distance.

d. number of gases to be exchanged.

e. molecular weight and solubility of the gases?

Harvey mixes two liquids. which observation of the new mixture most likely indicates a precipitate is forming?

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 correct lewis structure for chloroform chcl3