For the following reaction
2 R (g) --> Q (g)
if the equilibrium concentration of R is 0.776 M and that of Q is 1.22 M at 25 ?C, what is the value of the equilibrium constant at this temperature?

a. 0.521
b. 0.494
c. 2.03
d. 1.57

Complete the table for ion charge based upon their losing or gaining electrons in the outer shell. (use the periodic table as necessary.) group most likely ionic charge # of valence electrons i +1 ii +2 iii +3 iv +4 or -4 v -3 vi -2 vii -1 viii 0

An excess of lithium oxide undergoes a synthesis reaction with water to produce lithium hydroxide li2o+h2o→2lioh if 1.05 g of water reacted, what is the theoretical yield of lithium hydroxide? a) 5.83 x 10–2 g lioh b) 1.17 x 10–1 g lioh c) 2.79 x 100 g lioh d) 1.40 x 100 g lioh

Table sugar completely dissolved in water is an example of a?