Recent content by Mohammad Baig

Imagine you're studying the dissolution of a salt (NaCl) molecule in a microscope. You drop a cube of salt onto a film of water and watch the effects. Which of these events will occur? a. The oxygen atoms in the water molecules are attracted to both sodium (Na+) and chloride (Cl-) ions. b. The...

...surface of a pan of water? I. Oil is hydrophilic. II. Oil is less dense than water. III. Oil is hydrophobic. a. I only b. II only c. III only d. I and II only e. II and III only

a. Water has a high specific heat. b. Water molecules are polar and can form hydrogen bonds. c. Water is more dense than ice. d. Hydrogen bonding causes the adhesion of water molecules. e. Hydrogen bonding gives water a high surface tension.

Water has specific heat of 4.184 J/g oC while copper has a specific heat of 0.387 J/g oC. Which of the following statement(s) is (are) true? a. It takes more heat to raise the temperature of water 1 degree Celsius than to raise the temperature of copper 1 degree Celsius. b. It takes more heat...

Formic acid, HCO2H, is a weak acid that has a buffer zone between pH 2.7 and pH 4.7. What will happen if we start with 1 M HCO2H at about pH 2 and add 0.1 M NaOH (pH 13) a few milliliters at a time? a. The pH of the solution instantaneously drops to zero. b. The pH gradually decreases from pH...