Exam 3: Water and Life

Use the following information to answer the questions below. You live in Atlantic Canada and you are Skyping a friend in Manitoba. You are both complaining about the weather as both regions are being subjected to the same arctic air mass. As you discuss it, however, it becomes clear that she is experiencing a bitter cold that you are not. You realize that you had pretty much the same conversation last summer when it was much hotter in Manitoba than at home. -Measurements show that the pH of a particular lake is 4.0. What is the hydroxide ion concentration of the lake?

Which of the following effects is produced by the high surface tension of water?

Which of these molecules would be soluble in water?

Buffers are substances that help resist shifts in pH by

Use the following information to answer the questions below. You live in Atlantic Canada and you are Skyping a friend in Manitoba. You are both complaining about the weather as both regions are being subjected to the same arctic air mass. As you discuss it, however, it becomes clear that she is experiencing a bitter cold that you are not. You realize that you had pretty much the same conversation last summer when it was much hotter in Manitoba than at home. -Measurements show that the pH of a particular lake is 4.0. What is the hydrogen ion concentration of the lake?

One litre of a solution of pH 9 has how many more hydroxyl ions (OH⁻)than 1 L of a solution of pH 4?

Liquid water's high specific heat is mainly a consequence of the

What is the pH of a 1 millimolar NaOH solution?

The only common substance on earth, which occurs naturally in all three physical states, is

Equal volumes (5 mL)of vinegar from a freshly opened bottle are added to each of the following solutions. After complete mixing, which of the mixtures will have the highest pH?

How would acidification of sea water affect marine organisms?

Which of the following solutions would require the greatest amount of base to be added to bring the solution to neutral pH?

The nutritional information on a cereal box shows that one serving of a dry cereal has? 200 kilocalories. If one were to burn one serving of the cereal, the amount of heat given off would be sufficient to raise the temperature of 20 kg of water how many degrees Celsius?

Why does evaporation of water from a surface cause cooling of the surface?

Use the following figure to answer the questions below. -How many grams would be equal to 1 mol of the compound shown in the figure above? (carbon = 12, oxygen = 16, hydrogen = 1)

Research indicates that acid precipitation can damage living organisms by

is 180 g/mol. Which of the following procedures should you carry out to make a 0.5 M solution of glucose?

You have a freshly prepared 0.1 M solution of glucose in water. Each litre of this solution contains how many glucose molecules?

Which type of bond must be broken for water to vaporize?

The slight negative charge at one end of one water molecule is attracted to the slight positive charge of another water molecule. What is this attraction called?