CHM103
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The individual pressure of a gas in a mixture of gases is called ______
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At relatively low pressure, there are no ___________ forces between gas molecules
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C. Ethanol dissolved in water would be an example of ___________
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D. 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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E. 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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Constituents in a solution can be separated by applying the principle of ___________
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The process of separating a pure substance from a solution is called _______
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Temperature, length, time and mass are examples of ________
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The Beckman thermometer IS used in the Beckman's apparatus for determining __________ of a substance
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-______is a state of matter that does not have a definite shape nor volume
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Numerical value of the universal gas constant is ____ J/K/mol
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L. What is the average speed (actually the root-mean square speed) of a neon atom at 27 C?
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M. 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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________ is an instrument that can be used to measure the strength of an acid or a base
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O. Which of the following is not a colligative property?
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The rate at which gases diffuse is inversely proportional to the Square root of their ____________
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Meter, kelvin, second and kilogram 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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S. Which of the following statements is false?
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T. Distillation can be used to separate ________
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U. An ideal gas differs from a real gas in that the molecules of an ideal gas __________.
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V. A liquid will "wet" a surface if: ______
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W. 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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The temperature, above which a substances can exist only in gaseous state is called _________
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Y. Which measurement describes the pressure of a gas?
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Z. Which of the followings is not a characteristic of an ideal solution?
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AA. 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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The mathematical equation for Boyle's law can be written as ___________
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At constant pressure, properties of gases that undergo changes are _______
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The volume occupied by 1 mole of oxygen gas at s.t.p. is ________ dm3
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_________ of a gas is proportional to the mean kinetic energy of the molecules in a gas
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Physical Chemistry is concern with two major aspects, namely ability to change and _____
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The gas law that explain the effusion of gas is ____________
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The equation of ideal gas can be expressed as ______
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AJ. Which of these alkanes is expected to have the highest viscosity?
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Apparatus that arc basically used for determining the melting points of substances are called ____________
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At high temperature and low pressure, gases tend to undergo phenomena that is called ___________
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An expression for the combined gas law can be expressed as ________
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A homogenous materials that contain only one substance is called a ___________
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A skillful process of identifying. substituting and using correct apparatus appropriately in the laboratory is called _____
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At low temperature and high pressure, gases tend to __________
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AQ. 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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A gas that obeys all the gas laws is called an ______
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International system of unit or system international can be written as an acronym _______________
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The mathematical equation for Charles law can be written as ________
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A plot showing the variation of volume with temperature at constant pressure is called __________
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AV. According to the kinetic theory of gases, a gas can be compressed much more than a liquid or solid because _________
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In a gas. the molecules on the average are separated by large ______ distances
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AX. In fractional distillation, a mixture of liquids is separated based on their _______
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At constant temperature, the gas law that is most suitable is called _____ law
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AZ. A mixture of iron filings and copper filings could best be separated by _________
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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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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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BC. Which of the followings will not diffract X-rays?
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Gas molecules confined to a container are in a state of ____________ motion
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