Week 7 Lecture Notes

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What is the deadline for the next Moodle assignment?

Monday at 8 a.m.

Saturday at 12 a.m.

Friday at 5 p.m.

Sunday at 10 p.m. (correct)

What do you need to bring to the Midmaster test?

Notebook and pen

Phone and charger

Student ID and UOW approved calculator (correct)

Laptop and headphones

When is the Midmaster test?

Week 7 in the lab time

Week 10 in the lab time

Week 8 in the lab time (correct)

Week 9 in the lab time

What is the purpose of the public holiday in Week 8?

ANZAC Day Signup and view all the answers

What should you do before your workshop?

Complete your pre-workshop activities on Moodle Signup and view all the answers

What happens during the mid semester break?

You have nothing due for Chem 101 Signup and view all the answers

What is the formula to calculate the vapor pressure of a solution?

p = x × Pvap Signup and view all the answers

What is the mole fraction of a component in a solution?

moles of solvent divided by total moles of all components Signup and view all the answers

What is the density of Glycerol in the given problem?

1.26 g/mil Signup and view all the answers

How many moles of Glycerol are present in the solution?

0.68396 moles Signup and view all the answers

What is the molar mass of water?

18.02 g/mol Signup and view all the answers

How many moles of water are present in the solution?

27.6637 moles Signup and view all the answers

What is the percentage of sodium chloride by mass in the solution?

3.5% Signup and view all the answers

What is the value of 'i' in the equation for delta TB?

2 Signup and view all the answers

What is the mass of sodium chloride in a 100 g solution?

3.5 g Signup and view all the answers

What is the purpose of finding delta TB?

To calculate the boiling point of seawater Signup and view all the answers

What is the boiling point of seawater calculated as?

The normal boiling point of water plus delta TB Signup and view all the answers

What is the assumption made about the solution?

The solution has 100 g of solution Signup and view all the answers

What is the meaning of isotonic in relation to a solution and blood?

A solution that has the same concentration as blood Signup and view all the answers

What is the osmotic pressure of blood in this scenario?

7.7 atmospheres Signup and view all the answers

What is the symbol used to represent osmotic pressure in the formula sheet?

π Signup and view all the answers

What is the formula for osmotic pressure in terms of molarity, gas constant, and temperature?

π = IRT/M Signup and view all the answers

What is the purpose of rearranging the formula πV = nRT?

To find the molarity of the solution Signup and view all the answers

Why is the temperature given in degrees Celsius converted to Kelvin?

Because the formula requires it Signup and view all the answers

What is the value of the I in the given formula?

1 Signup and view all the answers

What is the unit of osmotic pressure in the problem?

Atmospheres Signup and view all the answers

What is the value of R used in the formula?

0.08206 L atm/mol·K Signup and view all the answers

What is the temperature used in the problem in Kelvin?

298 K Signup and view all the answers

What is the calculated molarity of the solution?

0.314878 mol/L Signup and view all the answers

What is the conversion factor from atmospheres to kilopascals?

1 atmosphere = 100 kilopascals Signup and view all the answers