For the following substances, classify each as either nonelectrolyte or strong electrolyte. 
a. Ca(NO₃)₂
b. NaOHc. C₆H₁₂O₆
d. NaBr

• A. a = nonelectrolyte
  b = strong electrolyte
  c = nonelectrolyte
  d = strong electrolyte
• B. a = nonelectrolyte
  b = strong electrolyte
  c = strong electrolyte
  d = strong electrolyte
• C. a = strong electrolyte
  b = strong electrolyte
  c = nonelectrolyte
  d = strong electrolyte
• D. a =strong electrolyte
  b = strong electrolyte
  c = strong electrolyte
  d = nonelectrolyte

Answer: (C)