20. Hannah was conducting an experiment that had her add 5g of a metal to a beaker of cold water Dunne
she repeated the same experiment with hot water, she noticed the gas bubbles were released much more reply
А.
Hot water increases the collision rate of the molecules, causing the reaction to occur faster
B.
Hot water increases the surface area of the molecules, causing the reaction to occur taster
C
During the second experiment a chemical change occurred, whereas the first experiment resulted in a physical change
D. The temperature of the water does not effect the speed of the reaction, as there are other variables that could impact the speed of the reaction

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 shape would a molecule with two bound groups and two lone pairs have?

What are the constituent metals of stainless steel?