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Q 1/24
Score 0
Under what conditions does a gas behave more like a real gas than an ideal gas?
120
low temperature & low pressure
high temperature & low pressure
high temperature & high pressure
low temperature & high pressure
Q 2/24
Score 0
What is the volume of 3.00mol of gas at STP?
120
it cannot be determined without knowing which gas is involved.
22.4 L
3 x 22.4L
3 x 22.4L x 273/760
24 questions
Q.
Under what conditions does a gas behave more like a real gas than an ideal gas?
1
120 sec
Q.
What is the volume of 3.00mol of gas at STP?
2
120 sec
Q.
An ideal gas of volume 189mL is collected over water at 30 0C and 777torr. The vapor pressure of water is 32torr at 30 0C. What pressure is exerted by the dry gas under these conditions?
3
120 sec
Q.
A 14.0L cylinder contains 5.60g of N2, 40.0g Ar, adn 6.40g O2. What is the total pressure in atm at 27 0C? (R= ideal gas constant)
4
120 sec
Q.
In a closed rigid system, 7.0mol CO2, 7.0mol Ar, 7.0mol N2, and 4.0mol Ne are trapped, with a total pressure of 10.0atm. What is the partial pressure exerted by the neon gas?
5
120 sec
Q.
Cl2 & F2 combine to form a gaseous product; one volume of Cl2 reacts with three volumes of F2 yielding two volumes of product. Assuming constant conditions of temperature and pressure, what is the formula of the product?
6
120 sec
Q.
Decreasing the temperature of an ideal gas from 80 0C to 40 0C causes the average kinetic energy to
7
120 sec
Q.
The average speed of the molecules of a gas is proportional to the
8
120 sec
Q.
A 5.00-L vessel contains 2.00moles of helium and 3.00moles of hydrogen at a pressure of 10.0atm. Maintaining a constant temperature, an additional 3.00moles of hydrogen are added. What is the partial pressure of hydrogen gas in the vessel at the end? (assume that the gases behave ideally).
9
120 sec
Q.
Increasing the pressure on a gas in a rigid container at constant temperature will
10
120 sec
Q.
Consider two samples of gas in identical rigid containers. Sample A at 273K and Sample B at 300K. Which of the following statements are true?
11
120 sec
Q.
The vapor pressure increases in a predictable order as shown
12
120 sec
Q.
The properties of solids vary with their bonding. An example of this is shown by
13
120 sec
Q.
As you go down the noble gas family on the periodic table, the boiling temperature increases. This trend is due mainly to
14
120 sec
Q.
Graphite and diamond are network solids, but graphite is slippery, black, and a conductor, while diamond is hard, colorles, and an insulator. This is because
15
120 sec
Q.
Which of the following properties of water is/are due to the intermolecular hydrogen bonding between the water molecules?
16
120 sec
Q.
The substances neon, sodium fluoride, carbon monoxide, and methylamine all have low molar masses. Order these substances in increasing boiling points or melting points.
17
120 sec
Q.
A substance with strong intermolecular forces of attraction would be expected to have
18
120 sec
Q.
Consider a closed flask containing a liquid and its vapor. Which statement is INCORRECT?
19
120 sec
Q.
1-Butanol (CH3CH2CH2CH2OH) would be expected to have a higher boiling temperature than 1-propanol (CH3CH2CH2OH0 because
20
120 sec
Q.
Order the following solvents from least to most polar
21
120 sec
Q.
In Figure 1 there are three gases present, Gas A, B, and C. The number of spheres represents the number of moles of each gas present. If the total pressure within the vessel is 5.00atm, what is the partial pressure of Gas B?
22
120 sec
Q.
Suppose that another gas D is added to the vessel in Figure 1, keeping the temperature and the volume constant. This is represented by Figure 2 above. What happens to the partial pressure of Gas B?
23
120 sec
Q.
Suppose that another gas D is added to the vessel in Figure 1, keeping the temp and the volume constant. This is represented by Figure 2 above. What happens to the total pressure? (In other words, compare the total pressure in Figure 1 versus Figure 2)
