ATI RN
chemistry for health sciences Questions
Question 1 of 5
Convert 4338 mL to qt. (1 L = 06 qt)
Correct Answer: B
Rationale:
To convert 4338 mL to qt, first convert mL to L by dividing by 1000 (4338 mL / 1000 = 4.338 L).
Then, convert L to qt using the conversion factor 1 L = 0.946 qt. So, 4.338 L * 0.946 qt/L = 4.092 qt (Answer
B).
Choice A (4598 qt) is incorrect as it does not follow the correct conversion process.
Choice C (4.092 10 3 qt) is incorrect due to incorrect formatting and notation.
Choice D (4092 qt) is incorrect as it uses the wrong conversion factor.
Question 2 of 5
Considering the plot of total mass (y-axis) versus volume (x-axis), which of the following is true?
Correct Answer: A
Rationale: The correct answer is A. The plot of total mass versus volume should be rather linear because the slope measures the density of a liquid. This is because density is defined as mass divided by volume (density = mass/volume).
Therefore, when mass is plotted against volume, the slope of the line represents the density of the liquid. A linear relationship between mass and volume indicates that the density remains constant.
Summary of other choices:
B: The plot being curved upward due to slope measuring density is incorrect.
C: The plot being curved upward due to mass being higher in successive trials is incorrect.
D: The plot being linear because the mass of the beaker stays constant is incorrect.
Question 3 of 5
The melting point of indium is 2°C. At 323°F, what is the physical state of indium?
Correct Answer: B
Rationale:
To determine the physical state of indium at 323°F, we convert the temperature to Celsius (323°F = 161.7°
C). Since the melting point of indium is 2°C, which is lower than 161.7°C, indium would be in a liquid state at 323°F. The correct choice is B: Liquid.
A: Solid - Incorrect because indium is in a liquid state at 323°F.
C: Gas - Incorrect, as indium would be in a liquid state at 323°F.
D: Not enough information - Incorrect since the temperature provided allows us to determine the physical state of indium.
Question 4 of 5
Bromine exists naturally as a mixture of bromine-79 and bromine-81 isotopes. An atom of bromine-79 contains
Correct Answer: A
Rationale: The correct answer is A because Bromine-79 has an atomic number of 35, indicating the number of protons. Neutrons are calculated by subtracting the atomic number from the mass number, so Bromine-79 with a mass number of 79 has 44 neutrons. Electrons are equal to the number of protons in a neutral atom, so there are 35 electrons in an atom of Bromine-79.
Choice B is incorrect because it does not account for the correct number of neutrons present in Bromine-79.
Choice C is incorrect as it has an incorrect number of protons and electrons for Bromine-79.
Choice D is incorrect as it incorrectly assigns 79 neutrons to Bromine-79, which is the total mass number, not the number of neutrons.
Question 5 of 5
All of the following are true except:
Correct Answer: B
Rationale: The correct answer is B because changing the number of protons in an atom's nucleus would result in a different element, not an ion.
A: True - adding or removing electrons forms ions.
C: True - removing electrons forms positively charged ions.
D: True - ions have a charge due to the imbalance of protons and electrons.