What is the hydroxide concentration of a 0.10 molar solution of ammonia at equilibrium if its Ka is 5.62 × 10-10? A.
1.33 × 10-2 molar
B.
1.33 × 10-3 molar
C.
3.17 × 10-12 molar
D.
3.17 × 10-8 molar
E.
7.50 × 10-6 molar

Which of the following pairs of elements belong to the same groupa. h and he b. li and bec. c and pb d. ga and ge

Calculate - analysis of compound composed of iron and oxygen yields 174.86 of fe and 75.14g of o. what is the empirical formula for this compound?

Achemist 16 drop copper metal from copper chloride solution. the chemist place is 0.50 g of aluminum foil in a solution containing 0.75 g of copper (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction?