ATTENTION:
Kindly note that you will be presented with 50 questions randomized from the NOUN question bank. Make sure to take the quiz multiple times so you can get familiar with the questions and answers, as new questions are randomized in each attempt.
Good luck!
CHM103
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1. A sample of oxygen occupies 47.2 liters under a pressure of 1240 torr at 25 $^{o}C$. What volume would it occupy at 25$^{o}C$ if the pressure were decreased to 730 torr?
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At low temperature and high pressure, gases tend to __________
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3. Which of the following statements is false?
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4. An atom on the face-centre of a unit cell is shared by _________ unit cells.
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Modern approach to chemistry deals with equilibrium properties, ability to change and ______
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Physical Chemistry is concern with two major aspects, namely ability to change and _____
7 / 50
In a gas. the molecules on the average are separated by large ______ distances
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The Beckman thermometer IS used in the Beckman's apparatus for determining __________ of a substance
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9. Which of these alkanes is expected to have the highest viscosity?
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At relatively low pressure, there are no ___________ forces between gas molecules
11 / 50
________ is an instrument that can be used to measure the strength of an acid or a base
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At constant temperature, the gas law that is most suitable is called _____ law
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The volume occupied by 1 mole of oxygen gas at s.t.p. is ________ dm3
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14. An ideal gas differs from a real gas in that the molecules of an ideal gas __________.
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At high temperature and low pressure, gases tend to undergo phenomena that is called ___________
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16. Ethanol dissolved in water would be an example of ___________
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17. Which one of the following statements most accurately relates the properties of a liquid at room temperature with its intermolecular forces?
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A plot showing the variation of volume with temperature at constant pressure is called __________
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19. The Henry's law constant for helium gas in water at 30 °C is 0.00037 M/atm. When the partial pressure of helium above a sample of water is 0.650 atm, the concentration of helium in the water is __________ M.
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An expression for the combined gas law can be expressed as ________
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21. A mixture of iron filings and copper filings could best be separated by _________
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Meter, kelvin, second and kilogram are examples of _______
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23. What is the average speed (actually the root-mean square speed) of a neon atom at 27 C?
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The individual pressure of a gas in a mixture of gases is called ______
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-______is a state of matter that does not have a definite shape nor volume
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A gas that obeys all the gas laws is called an ______
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27. In fractional distillation, a mixture of liquids is separated based on their _______
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A skillful process of identifying. substituting and using correct apparatus appropriately in the laboratory is called _____
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The mathematical equation for Charles law can be written as ________
30 / 50
Constituents in a solution can be separated by applying the principle of ___________
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The mathematical equation for Boyle's law can be written as ___________
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Gas molecules confined to a container are in a state of ____________ motion
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33. Which of the following is not a colligative property?
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For 1 mole of an ideal gas, a plot of PV against T will give a straight line whose slope is equal to __________
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35. The vapor pressure of pure ethanol at 60 °C is 0.459 atm. Raoult's Law predicts that a solution prepared by dissolving 10.0 mmol naphthalene (nonvolatile) in 90.0 mmol ethanol will have a vapour pressure of __________ atm.
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36. Which of the followings is not a characteristic of an ideal solution?
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International system of unit or system international can be written as an acronym _______________
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38. Distillation can be used to separate ________
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39. Which of the followings will not diffract X-rays?
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Temperature, length, time and mass are examples of ________
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A solution is prepared by dissolving calcium chloride in water and diluting to 500.0 mL. If this solution contains 44 ppm chloride ions, the concentration of calcium ions is __________ ppm.
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The gas law that consider the total pressure of a gas as a function of the pressures exerted by the individual gases that make up the mixture is __________
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_________ of a gas is proportional to the mean kinetic energy of the molecules in a gas
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The process of separating a pure substance from a solution is called _______
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45. The concentration of KBr in a solution prepared by dissolving 2.21 g of KBr in 897 g of water is __________ molal.
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46. A liquid will "wet" a surface if: ______
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Apparatus that arc basically used for determining the melting points of substances are called ____________
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The equation of ideal gas can be expressed as ______
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49. Which measurement describes the pressure of a gas?
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At constant pressure, properties of gases that undergo changes are _______
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