2 H2 + 022 H2O f) How many hydrogen atoms are needed to produce two H2O molecules?

g) How many oxygen atoms are needed to produce two H2O molecules?

h) How many hydrogen molecules are needed to produce two H2O molecules?

i) How many oxygen are needed to produce two H2O molecules?

j) Write the "word equation" that you would use to describe this 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.

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?

In a chemical reaction, the final amount of the products is determined by the a. universal gas law b. law of definite proportions c. air pressure d. temperature e. none of the above me