Answer Options:
Answer: 79
Question: Calculate the % (m/v) for 4.80 g of LiCl dissolved in 79.0 g of LiCl solution. (The density of the LiCl solution is 1.15 g/mL.)
Answer Options:
Answer: 6.99
Question: Dinitrogen monoxide, N2O, an anesthetic called laughing gas, is used in dentistry. What is the pressure, in atm, of a 0.350 mol N2O at 22°C in a 5.00 L container?
Answer Options:
Answer: 2.38 atm
Question: From Q7, how many grams of solid NaNO3 crystallized after cooling?
Answer Options:
Answer: 16
Question: A nurse mixes 20 g of glucose with 100 cc of water to prepare a glucose IV solution. She then adds 0.850 L of water to make the final solution exactly 1.00 L. What is the density of this glucose IV in g/mL? (Density of pure water is 1.00 g/mL)
Answer Options:
Answer: This information is not visible in the provided image.
Question: Which phase of matter can be described as being the most chaotic at the atomic level?
Answer Options:
gas
liquid
solid
Answer: gas
Question: A titration experiment is set up where 61.90 mL of 0.5031 M nicotine, C10H14N2, is titrated using 1.2735 M HNO3 (the HNO3 is placed in the burette). What should be the pH of the titration reaction after 61.90 mL of HNO3 is added?
Answer Options:
10.086
9.83
7.98
7.38
7.00
Answer: 7.00
Question: Compare the pH of two HF buffers:
(1) Buffer #1 contains 0.10 M HF and 0.10 M NaF.
(2) Buffer #2 contains 0.060 M HF and 0.120 M NaF.
Answer Options:
Answer: Buffer #1 has a lower pH and is better at buffering against both acids and bases.
Question: When the element cadmium forms an ion, what is the symbol for the ion?
Answer Options:
Cd+
Cd
Cd2+
C
Answer: Cd2+
Question: A doctor orders 200 mL of a 15% (m/v) ibuprofen. If you have 10% (m/v) ibuprofen on hand, how many mL do you need to prepare this solution?
Answer Options:
Answer: 20