Stoichiometry Practice Test Section I: Multiple Choices—circle the best response to each question [10] 1. What is the mass of 0.300 mol of CaSO4? a. 2.20 x 10-3 g b. 40.8 g c. 48.9 g d. 4.54 x 102 g 2. How many atoms are in 1.00 mol of beryllium? a. 9.01 b. 22.4 c. 6.02 x 1023 d. 1.20 x 1047 3. What is the molar mass of Al2(SO4)3? a. 214.17 g/mol b. 278.03 g/mol c. 342.17 g/mol d. 450.09 g/mol 4. Which is the most concentrated solution? a. 1.23 mol/L b. 5.83 mol/L c. 7.60 mol/L d. 8.00 mol/L 5. Which type of particle is always written in its empirical formula notation? a. Molecular b. Ionic c. Polyatomic ions d. Metallic 6. What volume does 22.2 g of chlorine gas, Cl2 (g), occupy at STP? a. 7.01 L b. 14.0 L c. 35.8 L d. 71.8 L 7. What mass of NaOH is present in 0.250 L of a 0.100 mol/L solution? a. 2.50 x 10-2 g b. 1.00 g c. 16.0 g d. 1.00 x 102 g 1
Chemistry 11
Name: __________________________
8. Which substance is a molecule: a. Ca(OH)2 b. NCl3 c. PO42d. Hg 9. How many molecules of C6H12O6 are present in a 5.50 g sample? a. 5.07 x 10-26 b. 3.05 x 10-2 c. 1.84 x 1022 d. 1.97 x 1025 10. Which of the following statements is/are true? I. The molar mass of CaCO3 is 100.09 g/mol? II. 50 g of CaCO3 contains 9 ×1023 oxygen atoms. III. A 200 g sample of CaCO3 contains 2 moles of CaCO3 a. b. c. d. e.
I only II only III only I and III only I, II, and III
Section II: Extended Responses—show ALL your workings in the space provided [40] 1. Determine the molar mass of: a. Barium chloride [2]
b. (NH4)3PO4 [2]
2
Chemistry 11
Name: __________________________
2. How many moles are in 2.13 x 1024 atoms of LiOH? [3]
3. How many moles are in 2.56 g of magnesium chloride? [3]
4. What is the mass of 2.42 x 1022 formula units of iron (III) sulfate? [3]
5. Find the mass of 12.5 L of NH3 at STP. [3]
3
Chemistry 11
Name: __________________________
6. The formula for the first superconductor was YBa2Cu3O7. Calculate the percent composition of this substance. [4]
7. If 60.2 grams of Hg combines completely with 24.0 grams of Br to form a compound, what is the percent composition of Hg in the compound? [2]
8. What is the empirical formula of a substance that is 53.5% C, 15.5% H, and 31.1% N by weight? [3]
9. A white powder is analyzed and found to contain 43.64% phosphorus and 56.36% oxygen by mass. The compound has a molar mass of 283.88 g. What are the compound’s empirical and molecular formula? [5]
4
Chemistry 11
Name: __________________________
10. Found in everything from Diet Pepsi to coffee, caffeine (C8H10N4O2) helps most teachers get through the day. Consumption of 10 cups of brewed coffee would result in a caffeine dosage of about 1.20 g of caffeine. a. Calculate the number of moles of caffeine in 10 cups of brewed coffee. [3]
b. 500.0 mg is considered to be an overdose of caffeine. Calculate the number of moles in a 500 mg caffeine overdose. [3]
c. How many caffeine molecules would be found in 10 cups of brewed coffee? [2]
d. How many caffeine molecules would be found in 20 cups of brewed coffee? [2]
There was a problem previewing this document. Retrying... Download. Connect more apps... Try one of the apps below to open or edit this item. Stoichiometry ...
There was a problem previewing this document. Retrying... Download. Connect more apps... Try one of the apps below to open or edit this item. Review ...
I think that when you meet the person that you want spend the rest of your life with, you change. A. B. C. D .... a. have run b. have been running c. ran d. am running. 16. â¦â¦.. he and his wife â¦â¦. in their house for a long time? a. Have/live
Last year, a new bridge over the river ______. A. is built. B. was built. C. will be built ...... Nile is considered to be â¦â¦â¦â¦. river in the world. A. longest ...... PRACTICE 21. Ph n I. Khoanh tròn t phát âm khác v i các t còn l i. 1.
Why do some young people want to find a job after they leave school? a. They are ...... I had a few problems, but Bob gave me some good advices. A B. C. D.
Page 1 of 2. Page 1 of 2. Page 2 of 2. Page 2 of 2. Stoichiometry Packet Answers.pdf. Stoichiometry Packet Answers.pdf. Open. Extract. Open with. Sign In.
There was a problem previewing this document. Retrying... Download. Connect more apps... Try one of the apps below to open or edit this item. Visualizing ...
This practice test book is the perfect preparation tool for the STAAR Reading test. ... Full answer key lists the specific TEKS skill covered by each question.
pdf. Download now. Click here if your download doesn't start automatically. Page 1 of 1. sat subject test math 2 practice test pdf. sat subject test math 2 practice ...
OAR Study Guide: Test Prep & Practice Test Questions for the Officer Aptitude ... A test taker has to not only understand the material that is being covered on the ...
Screencasts are available at www.apchemistrynmsi.wikispaces.com. 3. ALTERNATE TECHNIQUE #1âUSING THE MOLE MAP: Simply reproduce this map on your scratch paper until you no longer need to since the image will be burned. into your brain! MULTIPLY [by
Page 1 of 8. Geometry Name: Practice Test Ch. 5. Polygon Properties Date: Complete each statement. Do not use square as an answer. 1. The three midsegments of a triangle divide the triangle into . 2. The opposite angles of a parallelogram are . 3. Ea
Whoops! There was a problem loading more pages. Thermochemistry Practice Test Warren Blank.pdf. Thermochemistry Practice Test Warren Blank.pdf. Open. Extract. Open with. Sign In. Details. Comments. General Info. Type. Dimensions. Size. Duration. Loca
