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. 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.
2 / 50
Gas molecules confined to a container are in a state of ____________ motion
3 / 50
Apparatus that arc basically used for determining the melting points of substances are called ____________
4 / 50
_________ of a gas is proportional to the mean kinetic energy of the molecules in a gas
5 / 50
5. Distillation can be used to separate ________
6 / 50
The Beckman thermometer IS used in the Beckman's apparatus for determining __________ of a substance
7 / 50
The equation of ideal gas can be expressed as ______
8 / 50
8. 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?
9 / 50
At low temperature and high pressure, gases tend to __________
10 / 50
10. The concentration of KBr in a solution prepared by dissolving 2.21 g of KBr in 897 g of water is __________ molal.
11 / 50
11. Which of the following statements is false?
12 / 50
The rate at which gases diffuse is inversely proportional to the Square root of their ____________
13 / 50
A skillful process of identifying. substituting and using correct apparatus appropriately in the laboratory is called _____
14 / 50
International system of unit or system international can be written as an acronym _______________
15 / 50
15. What is the average speed (actually the root-mean square speed) of a neon atom at 27 C?
16 / 50
At constant pressure, properties of gases that undergo changes are _______
17 / 50
At relatively low pressure, there are no ___________ forces between gas molecules
18 / 50
At high temperature and low pressure, gases tend to undergo phenomena that is called ___________
19 / 50
19. Ethanol dissolved in water would be an example of ___________
20 / 50
20. Which measurement describes the pressure of a gas?
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21. An atom on the face-centre of a unit cell is shared by _________ unit cells.
22 / 50
22. Which of these alkanes is expected to have the highest viscosity?
23 / 50
Meter, kelvin, second and kilogram are examples of _______
24 / 50
Modern approach to chemistry deals with equilibrium properties, ability to change and ______
25 / 50
25. 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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26. Which of the followings is not a characteristic of an ideal solution?
27 / 50
27. According to the kinetic theory of gases, a gas can be compressed much more than a liquid or solid because _________
28 / 50
The gas law that explain the effusion of gas is ____________
29 / 50
At constant temperature, the gas law that is most suitable is called _____ law
30 / 50
The temperature, above which a substances can exist only in gaseous state is called _________
31 / 50
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 __________
32 / 50
The process of separating a pure substance from a solution is called _______
33 / 50
________ is an instrument that can be used to measure the strength of an acid or a base
34 / 50
Temperature, length, time and mass are examples of ________
35 / 50
35. Which of the following is not a colligative property?
36 / 50
A gas that obeys all the gas laws is called an ______
37 / 50
37. A liquid will "wet" a surface if: ______
38 / 50
In a gas. the molecules on the average are separated by large ______ distances
39 / 50
39. In fractional distillation, a mixture of liquids is separated based on their _______
40 / 50
Constituents in a solution can be separated by applying the principle of ___________
41 / 50
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.
42 / 50
For 1 mole of an ideal gas, a plot of PV against T will give a straight line whose slope is equal to __________
43 / 50
The mathematical equation for Boyle's law can be written as ___________
44 / 50
-______is a state of matter that does not have a definite shape nor volume
45 / 50
45. 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.
46 / 50
The volume occupied by 1 mole of oxygen gas at s.t.p. is ________ dm3
47 / 50
Numerical value of the universal gas constant is ____ J/K/mol
48 / 50
The mathematical equation for Charles law can be written as ________
49 / 50
An expression for the combined gas law can be expressed as ________
50 / 50
Physical Chemistry is concern with two major aspects, namely ability to change and _____
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