Chapter 2
Chapter 3
Chapter 6
100
What is 4.5 L in cm3?
4,500 cm3
100
The temperature of a 250.0-g ball of Iron (0.450 J/g C) increases from 19.0 C to 32.0 C. How much heat did the iron ball gain in kJ?
1.4625 kJ
100
Which of the following molecules is an ionic compound?
NO2 KBr SF3 CH2Cl2
KBr
200
Convert 0.165 cm to km.
1.65 x 10-6 km
200
How much energy (in kJ) is required to completely vaporize 45.0 g of water at its boiling point?
102 kJ
200
Name the following compounds:
MgBr2 Cu2O Cr2O3 Pb(NO3)2 CaCO3
Magnesium bromide
Copper(I) oxide
Chromium(III) oxide
Lead(II) nitrate
Calcium carbonate
300
A scientist is measuring the width of a bacterial cell and records it as 0.015 millimeters (mm). To compare the size with other microorganisms, the scientist needs to convert this measurement to nanometers (nm).
What is the width of the bacterial cell in nanometers?
15,000 nm
300
Based on the graph, at what point would the particles be moving quickly (almost bouncing off each other). Additionally, what is the boiling point?
The top slanted line, gas phase
90 degrees Celsius
300
Name the following compounds:
CO N2O3 IF5 Cl2O7 PCl3
Carbon monoxide
Dinitrogen trioxide
Iodine pentafluoride
Dichlorine heptoxide
Phosphorus trichloride
400
A patient is prescribed to take 2 tablets per day of an allergy medication. Each tablet contains 300 mg of the medication.
- How many milligrams of the medication are given in one day?
- How many grams of the medication are given in 5 days?
600 mg/ day
3.0 g of medication over 5 days
400
A serving of peanut butter contains 8 grams of fat, 6 grams of protein, and 4 grams of carbohydrate. What is the total amount of nutritional Calories (Cal) in one serving of peanut butter?
Note:
Carbohydrate = 4 kcal/g
Fat = 9 kcal/g
Protein = 4 kcal/g
112 kcal
400
Draw the Lewis structure for H2S. What is the bond polarity between the S and H?
non-polar
500
The laboratory synthesis of a cosmetic ingredient uses glycerin, which has a density of 1.26 g/mL. If 8.0 g of glycerin is required for the process, what volume of glycerin should be measured out using a syringe?
6.35 mL
500
A 50.0 g piece of aluminum (specific heat capacity = 0.897 J/g·°C) absorbs 720 J of heat energy. Its final temperature is measured to be 57.0 °C. What was the aluminum’s initial temperature in Kelvin?
314 K
500
Draw the Lewis structure for NI3. How many bonding and non bonding electrons are on the central atom?
Bonding: 6 electrons
Non-bonding: 2 electrons