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