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