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

The chemical formula for sodium phosphate is Na3PO4.  What is the charge on the phosphate ion?

The three most common forms of chocolate in the United States are Dark Chocolate, Milk Chocolate and White Chocolate.  The following image shows the active ingredients in each of these types of chocolate.  Which of these active ingredients represents the nonpolar molecule?    

The reactant in an enzyme-catalyzed reaction is the

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 of the HCl stock solution to of water.

Below is an image of a cellular membrane.  Which part of the membrane is polar and which part is nonpolar?   

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

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-     

Explain the differences between a Phase I and Phase II Environmental Site Assessment. As part of your answer, explain the objective of each

You are assigned to be the Environmental Professional (EP) for an active industrial manufacturing complex. You are about to conduct the site visit of the property. List three (3) interior and seven (7) exterior observations you should be looking for to help identify any current uses likely to involve the use, treatment, storage, disposal, or generation of hazardous substances or petroleum products or to identify releases or material threat of future releases of hazardous substances or petroleum products to the environment.