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Which carbon(s) in the Fischer projection below is/are a chirality center?  

At low pH, the amino acid zwitterion reacts with hydronium (H3O+). What is the product of this acid-base reaction?  

In a molecule, an atom, X, has a tetrahedral electron geometry but a trigonal pyramidal molecular geometry. How many bonds does atom X have?

Which describes the dissolution of MgCl2 in water? MgCl2 → Mg+ + Cl2– MgCl2 → Mg2+ + Cl22– MgCl2 → Mg2+ + 2 Cl– MgCl2 → Mg+ + 2 Cl–

How many molecules of carbon dioxide (CO2) are in 2.8 g of carbon dioxide (CO2)? Show the calculation.

A solution is prepared by dissolving 1.5 g of NaCl in enough water to produce a total solution volume of 750 mL. What is the concentration of the solution in % m/v?

Which of the following reactions is NOT balanced? Fe2O3 + 2 Al → 2 Fe + Al2O3 C6H12O6 + 6 O2 → 6 CO2 + 6 H2O CaO + 3 C → CaC2 + CO C2H6O + O2 → 2 CO2 + 3 H2O

What is the IUPAC name of this hydrocarbon?  

Which choice correctly numbers pinolenic acid (shown below) using the omega system?  

An order is given to administer 15 g of lactulose, often used for treating complications of liver disease. The lactulose syrup has a concentration of 10. g/15 mL. What volume, in milliliters, of syrup should be given to the patient? Show the calculation.