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Which term best describes the relatively small portion of the enzyme that is directly involved in the biochemical reaction being catalyzed?

Which of the following molecules represents an aldehyde? A.      B.        C.      D.     

What mass (in grams) of ethanol can fill a 200.0 mL beaker if the density of ethanol is 0.789 g/mL?  

Draw a Lewis structure for the molecule N2.  The bond between the nitrogen atoms is best described as a _________________ bond.   

Name the following molecule: CH3CH2CH2OH

The reactant in an enzyme-catalyzed reaction is the

What is the atomic mass of the ion in the previous question if it has 11 protons, 10 electrons and 13 neutrons?

Dr. Maloney has asked you to make a solution of Hydrochloric acid (HCl) to be used in lab this week.  She says the class needs 500 mL of 2.5 M HCl.  After going to the stock room, you find a stock solution of HCl in the acid cabinet with a concentration of 12.0 M.  In order to prepare the dilution for class, you need to add [HCl] of the HCl stock solution to [water] of water.

What is the molar concentration (M) of a solution that contains 10.0 g C6H12O6 in 500. mL solution? Molar mass: C6H12O6 = 180.2 g/mol

What is the correct atomic symbol for the ion that contains 11 protons, 10 electrons and 13 neutrons (use the periodic table below)? A. K+ B. Na+ C. Mg2+ D. F-