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