Astudent dissolves some solid sodium hydroxide in a beaker of water. which are the solute and the solvent? choose all answers that are correct. a. solvent: sodium hydroxide b. solute: water c. solvent: water d. solute: sodium hydroxide

If 10.g of agno3 is available, what volume of 0.25 m agno3 can be prepared

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.

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?