Suggest two reasons why copper should not be disposed of in landfill sites

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

If i can still dissolve more sugar into the solution at a certain temperature what would i call that solution

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.