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
At high temperature and low pressure, gases tend to undergo phenomena that is called ___________
2 / 50
The process of separating a pure substance from a solution is called _______
3 / 50
3. Which measurement describes the pressure of a gas?
4 / 50
The individual pressure of a gas in a mixture of gases is called ______
5 / 50
5. A liquid will "wet" a surface if: ______
6 / 50
6. What is the average speed (actually the root-mean square speed) of a neon atom at 27 C?
7 / 50
7. Which of the following is not a colligative property?
8 / 50
A gas that obeys all the gas laws is called an ______
9 / 50
Physical Chemistry is concern with two major aspects, namely ability to change and _____
10 / 50
At constant pressure, properties of gases that undergo changes are _______
11 / 50
11. Ethanol dissolved in water would be an example of ___________
12 / 50
12. 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.
13 / 50
13. According to the kinetic theory of gases, a gas can be compressed much more than a liquid or solid because _________
14 / 50
Temperature, length, time and mass are examples of ________
15 / 50
________ is an instrument that can be used to measure the strength of an acid or a base
16 / 50
A homogenous materials that contain only one substance is called a ___________
17 / 50
The mathematical equation for Charles law can be written as ________
18 / 50
18. Which of the following statements is false?
19 / 50
Apparatus that arc basically used for determining the melting points of substances are called ____________
20 / 50
In a gas. the molecules on the average are separated by large ______ distances
21 / 50
21. Which of the followings will not diffract X-rays?
22 / 50
The volume occupied by 1 mole of oxygen gas at s.t.p. is ________ dm3
23 / 50
Meter, kelvin, second and kilogram are examples of _______
24 / 50
The temperature, above which a substances can exist only in gaseous state is called _________
25 / 50
The equation of ideal gas can be expressed as ______
26 / 50
At low temperature and high pressure, gases tend to __________
27 / 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 __________
28 / 50
An expression for the combined gas law can be expressed as ________
29 / 50
Modern approach to chemistry deals with equilibrium properties, ability to change and ______
30 / 50
The rate at which gases diffuse is inversely proportional to the Square root of their ____________
31 / 50
International system of unit or system international can be written as an acronym _______________
32 / 50
32. A mixture of iron filings and copper filings could best be separated by _________
33 / 50
A plot showing the variation of volume with temperature at constant pressure is called __________
34 / 50
-______is a state of matter that does not have a definite shape nor volume
35 / 50
35. An ideal gas differs from a real gas in that the molecules of an ideal gas __________.
36 / 50
36. An atom on the face-centre of a unit cell is shared by _________ unit cells.
37 / 50
37. The concentration of KBr in a solution prepared by dissolving 2.21 g of KBr in 897 g of water is __________ molal.
38 / 50
The mathematical equation for Boyle's law can be written as ___________
39 / 50
At constant temperature, the gas law that is most suitable is called _____ law
40 / 50
40. 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.
41 / 50
41. Which of these alkanes is expected to have the highest viscosity?
42 / 50
Numerical value of the universal gas constant is ____ J/K/mol
43 / 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.
44 / 50
_________ of a gas is proportional to the mean kinetic energy of the molecules in a gas
45 / 50
The Beckman thermometer IS used in the Beckman's apparatus for determining __________ of a substance
46 / 50
46. Which one of the following statements most accurately relates the properties of a liquid at room temperature with its intermolecular forces?
47 / 50
47. Distillation can be used to separate ________
48 / 50
48. 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?
49 / 50
A skillful process of identifying. substituting and using correct apparatus appropriately in the laboratory is called _____
50 / 50
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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