G12 AP Chemistry Chapter 3 - WS (no answers)

Chapter 3: Multiple-Choice 1)  When the following equation is balanced, the coefficients are __________.  A) 1, 1, 1, 1 B) 4, 7, 4, 6 C) 2, 3, 2, 3 D) 1, 3, 1, 2 E) 4, 3, 4, 3 2)  When the following equation is balanced, the coefficients are __________. A) 2, 3, 1, 6 B) 2, 1, 3, 2 C) 1, 1, 1, 1 D) 4, 6, 3, 2 E) 2, 3, 2, 3 3)  When the following equation is balanced, the coefficient of is __________. A) 1 B) 2 C) 3 D) 4 E) 5 4)  When the following equation is balanced, the coefficient of Al is __________. A) 1 B) 2 C) 3 D) 5 E) 4 5)  When the following equation is balanced, the coefficient of is __________. A) 1 B) 2 C) 3 D) 5 E) 4 6)  When the following equation is balanced, the coefficient of is __________. A) 1 B) 2 C) 3 D) 4 E) 5 7)  When the following equation is balanced, the coefficient of is __________. A) 1 B) 2 C) 3 D) 5 E) 4 8)  When the following equation is balanced, the coefficient of HCl is __________. A) 1 B) 2 C) 3 D) 4 E) 0 9)  When the following equation is balanced, the coefficient of is __________. A) 1 B) 2 C) 3 D) 5 E) 4 10)  When the following equation is balanced, the coefficient of is __________. A) 1 B) 2 C) 3 D) 4 E) 0 11)  When the following equation is balanced, the coefficient of is __________. A) 1 B) 2 C) 3 D) 7 E) 5 12)  When the following equation is balanced, the coefficient of is __________. A) 2 B) 3 C) 4 D) 5 E) 1 13)  When the following equation is balanced, the coefficient of is __________. A) 1 B) 2 C) 3 D) 4 E) 0 14)  When the following equation is balanced, the coefficient of is __________. A) 1 B) 2 C) 3 D) 4 E) 0.5 15)  When the following equation is balanced, the coefficient of water is __________. A) 1 B) 2 C) 3 D) 4 E) 5 16)  When the following equation is balanced, the coefficient of hydrogen is __________. A) 1 B) 2 C) 3 D) 4 E) 5 17)  When the following equation is balanced, the coefficient of oxygen is __________. A) 1 B) 3 C) 2 D) 4 E) 5 18)  When the following equation is balanced, the coefficient of sulfur dioxide is __________. A) 5 B) 1 C) 3 D) 2 E) 4 19)  When the following equation is balanced, the coefficient of dinitrogen pentoxide is __________. A) 1 B) 2 C) 3 D) 4 E) 5 20)  When the following equation is balanced, the coefficient of water is __________. A) 5 B) 2 C) 3 D) 4 E) 1 21)  When the following equation is balanced, the coefficient of nitric acid is __________. A) 5 B) 2 C) 3 D) 4 E) 1 22)  Write the balanced equation for the reaction that occurs when methanol, CH3OH (l) is burned in air.  What is the coefficient of methanol in the balanced equation? A) 1 B) 2 C) 3 D) 4 E) 3/2 23)  Write the balanced equation for the reaction that occurs when methanol, CH3OH (l) is burned in air.  What is the coefficient of oxygen in the balanced equation? A) 1 B) 2 C) 3 D) 4 E) 3/2 24)  What is the coefficient of when the following equation is completed and balanced? A) 2 B) 3 C) 5 D) 6 E) 1 25)  Predict the product in the combination reaction below. A) AlN B) C) D) E) 26)  The balanced equation for the decomposition of sodium azide is __________. A) B) C) D) E) 27)  There are __________ mols of carbon atoms in 4 mol of dimethylsulfoxide . A) 2 B) 6 C) 8 D) 4 E) 3 28)  There are __________ sulfur atoms in 25 molecules of . A) B) C) D) 50 E) 29)  There are __________ hydrogen atoms in 25 molecules of . A) 25 B) C) D) 100 E) 30)  A sample of that contains 200 molecules contains __________ carbon atoms. A) 600 B) 200 C) D) E) 31)  How many grams of hydrogen are in 46 g of ? A) 5.8 B) 1.5 C) 2.8 D) 0.36 E) 184 32)  How many grams of oxygen are in 65 g of ? A) 18 B) 29 C) 9.0 D) 36 E) 130 33)  How many moles of carbon dioxide are there in 52.06 g of carbon dioxide? A) 0.8452 B) 1.183 C) D) E) 34)  There are __________ molecules of methane in 0.123 mol of methane (CH4). A) 5 B) 2.46 × 10-2 C) 2.04 × 10-25 D) 7.40 × 1022 E) 0.615 35)  A 2.25-g sample of magnesium nitrate, Mg (NO3)2, contains __________ mol of this compound. A) 38.4 B) 65.8 C) 148.3 D) 0.0261 E) 0.0152 36)  A 22.5-g sample of ammonium carbonate contains __________ mol of ammonium ions. A) 0.468 B) 0.288 C) 0.234 D) 2.14 E) 3.47 37)  What is the empirical formula of a compound that contains 27.0% S, 13.4% O, and 59.6% Cl by mass?