Review Test: Stoichiometry

Using the balanced chemical equation below, How many mole of CO2 (A) and H2O (B) will be produced and how many C2H4 (C) and O2 (D) will be left over if 7 C2H4 and 8 O2 are used.

• A= 4 B = 6 C= 2 D = 1
• A= 7 B = 3 C= 0 D = 3
• A= 6 B = 6 C= 3 D = 4
• A= 4 B = 4 C= 5 D = 2

Using the balanced chemical equation below, calculate the Number of moles of Hydrogen gas (H2) produced if we used up 7 moles of Chromium (Cr).

• 10.5 mol
• 4.67 mol
• 14.9 mol
• 3.0 mol

5.0g of Aluminum Fluoride (AlF3) is dissolved in 2.5L of pure water. In order to calculate the Molarity of the Aluminum Fluoride solution, you must calculate the Molar Mass of AlF3. Which of the following is the MM of AlF3?

• 83.976749g/mol
• 45.979943g/mol
• 99.943023g/mol
• 33.314341g/mol

5.0g of Aluminum Fluoride (AlF3) is dissolved in 2.5L of pure water. In order to calculate the Molarity of the Aluminum Fluoride solution, you must calculate the Number of Mole (NM) of AlF3 in 5.0g of AlF3. Assuming that the MM of AlF3 is 84.0. Which of the following is the NM?

• 0.0595 mol
• 420.0 mol
• 16.8 mol
• 89.0 mol

0.0600 mol of Aluminum Fluoride (AlF3) is dissolved in 2.5L of pure water. Calculate the Molarity of the Aluminum Fluoride solution.

• 0.0240 mol/L
• 41.60 mol/L
• 0.150 mol/L
• 2.56 mol/L

Use the image below to determine the number of each reactant.

• NH3: 5 NO: 7
• NH3: 6 NO: 5
• NH3: 4 NO: 6
• NH3: 2 NO: 3

Use the image below to determine the number of each product and Left over

• CO2: 4 H2O: 6 C2H6: 4 O2: 1
• CO2: 5 H2O: 8 C2H6: 2 O2: 3
• CO2: 6 H2O: 4 C2H6: 2 O2: 1
• CO2: 4 H2O: 6 C2H6: 0 O2: 0

Which of the following Multipliers will balance the Chemical Equation below?

• 1 - 1 - 2 - 3
• 1 - 5 - 5 - 2
• 2 - 5 - 4 - 2
• 0 - 4 - 1 - 6
• 1 - 2 - 3 - 4

Which of the following is the correct formula to calculate the Molar Mass of the Molecule below?

• MM(Fe) + MM(N) + MM(O)
• 1xMM(Fe) + 3xMM(N) + 3xMM(O)
• 1xMM(Fe) + 3xMM(N) + 9xMM(O)
• 3xMM(Fe) + 1xMM(N) + 9xMM(O)

Which of the following is the the Molar Mass of the Molecule below? Answer @ 1 decimal digit.

• 262.8576g/mol
• 262.85g/mol
• 262.9g/mol
• 263.0g/mol