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Chemistry 11a/15a Placement Exam
Question #1: Evaluate (0.04)^{1/2}
Question #2: If 2 + (4 + x)^{1/2} = 10, what is the value of x?
Question #3: Evaluate (6 × 10^{–6} )(4 × 10^{–4} ) / (3 × 10^{–3} )
Question #4: How many moles of carbon are present in 6 moles of Al_{2} (C_{2} O_{4} )_{3} ?
Question #5: If (V_{2} /V_{1} ) = (M_{1} /M_{2} )^{1/2} , what is the expression for M_{2} in terms of the other three variables?
Question #6: Suppose that (1/V) = (A/B) (1/S) + (1/B), where V and S are variables and A and B are constants. If (1/V) is plotted on the y-axis versus (1/S) on the x-axis,
What is the expression for the y-intercept?
What is the expression for the x-intercept?
Question #7: Evaluate [log(100) – antilog(2)]
Question #8: You are given 1 liter of 1 M glucose. You dilute it by adding to it 9 liters of distilled water. What is the final concentration?
Question #9: Given that 1 cm^{3} = 1 mL, how many liters are there in a cubic meter?
Question #10: If the atomic mass of Br is 80. g/mol, what mass of Br_{2} is required to prepare 500. mL of 0.010 M aqueous Br_{2} ?
Question #11: If the density of a liquid is 0.80 g/mL, what is the volume of 2.4 grams of the liquid?
Question #12: If 24 g of a compound synthesized in the laboratory represents a yield of 75%, what is the maximum (100%) yield?
Question #13: If x + y = 2 and 2x + 4y = 5
What is the value of x?
What is the value of y