Solve for the values of x in the equation      

Which of the following molecules contains polar bonds but is nonpolar overall?

The following molecule is a __________.  

Which of the following occurs when a protein is denatured? Covalent bonds are broken. Hydrogen bonds are broken. The protein loses its shape. The protein loses its biological activity.

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

How many hydrogen atoms are bonded to the carbons indicated below in the skeletal line structure?        

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?

The Fischer projection for fructose is shown below. Is it a D-sugar or an L-sugar?          

What type of reaction is the following reaction of hydrochloric acid with propene?  

Which of the following molecules is a nucleotide?