Answer Key Chapter 7
7.1 How many grams of solute are present in the following solutions?
a) 25.2 g of a 4.25 % w/w solution of glucose
25.2 g solution x 4.25 g solute = 1.07 g solute
100 g solution
b) 125 g of a 6.55% w/w solution of sodium sulfate
Chapter 8 Answer Key
8.1 In the reaction 3O2 (g) -> 2O3 (g) the rate of appearance of ozone (product)
was 1.50 mol/min. What was the rate of disappearance of oxygen?
ratio of O3 to O2 is 2 mol O3
3 mol O2
this is a unit conversion problem
1.50 mol O3 x 3
THE UNIVERSITY OF TEXAS RIO GRANDE VALLEY
DEPARTMENT OF CHEMISTRY
CHEM 1111 / General Chemistry I Lab / Course Syllabus
*Course Syllabus may be subject to change
Instructor: Ms. Zohra Azim, M.S.
E-mail address: firstname.lastname@example.org
Office: SETB 2.460
1. a) Identify the two conjugate acid/base pairs in the following equilibrium:
Conj. Acid (2)
Conj. Base (1)
b) Draw arrows to show the movement of electrons from the base to the aci
1) Fill in the blank:
a) The interaction between a solute and solvent is called _.
b) The interaction between water and substances to form solutions is called
2) The blood volume of an adult is 5.0 L. Blood alcohol levels of 0.50% v/v can cause a
Organic Chemistry Laboratory Final Exam
Exam Version A
Choose the most correct answer: (4 points each)
The raising of the oven temperature in GC will _ the retention times of two compounds
and _ their separation.
1) Aflatoxin B1 (C17H12O6) is present in a blue mold that may grow on peanuts and rice
stored improperly in humid conditions. The toxin affects the liver. In people who have
been exposed to hepatitis aflatoxin is thought to be synergistic with the develop
Some useful relationships:
1 oz = 28.35 g
1 kg = 1000 g
1s = 1000 ms
d = m/v
Cp = joules/(grams x change in temperature)
1) Identify the following as a chemical or physical property:
A) Sodium metal usually explodes when placed in water.
B) Salt dissolves