|
Calculate the osmotic pressure inside a typical bratwurst sausage being cooked in boiling pure water at 100.0°C. Assume that the fluids inside a bratwurst used in its preparation are approximately 0.80 M in dissolved non-electrolyte particles. Use your answer to explain why experienced cooks pierce the semipermeable skin of a bratwurst before boiling it.
Applying the osmotic pressure equation, Π = iMRT, we calculate the osmotic pressure inside the bratwurst sausage to be about 25 atm compared to approximately 1 atm in the boiling water surrounding the sausage. Thus, an experienced cook will pierce the skin with a tiny hole so the sausage doesn’t burst open.
If snake length were quantized in six-inch increments, what would happen to the length of a snake as it grew?
a. The snake’s length would never change.
b. The snake’s length would increase in “jumps” of six inches at a time.
c. The snake’s length would continuously get greater.
d. The snake’s length would not change but it would get wider.
Which solvent would be best for dissolving methanol (CH3OH)?
a. CCl4
b. C2H6
c. C6H14
d. CH3NH2
Cal Zeeum obtains the number 0.045006723 on a calculator. If the correct answer actually has four (4) significant figures, how should Cal write it?
a. 4.501 × 10–1
b. 0.045007
c. 0.0450
d. 0.04501
A 15.0 g sample of lithium reacts with a 15.0 g sample of oxygen according to the reaction:
4 Li +O2 → 2 Li2O.
After the reaction is complete, what will be produced?
a. 0.469 moles of lithium oxide
b. 0.938 moles of lithium oxide
c. 1.08 moles of lithium oxide
d. 2.16 moles of lithium oxide
| 
