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QUESTION 1
The pressure of a gas is measured in a closed manometer. The gas supports mercury at a height of 365 mm. What is the pressure in kPa?
QUESTION 2
With the temperature held constant, if pressure on a gas is increased, the volume will ______________. If the pressure of a gas is held constant and the temperature is increased, the volume of the gas will ____________.
increase, increase
decrease, decrease
increase, decrease
decrease, increase
QUESTION 3
What is the density in g/L of a 12.8 g sample of nitrgoen gas at 15.8 °C and 2.25 atm?
QUESTION 4
Order the gases from most dense (1.) to least dense (5.) at 25°C and 1 atm.
Kr
Ne
QUESTION 5
If 2.97 moles of nitrogen reacts with 4.96 moles of hydrogen, what is the maximum volume of ammonia (in L) that can be produced at a pressure of 1.01 atm and 327 K.
N2(g) + 3 H2(g) → 2 NH3(g)
QUESTION 6
13.2 g of butane (58.12 g/mol) undergoes combustion according to the following equation. What pressure of carbon dioxide in atm is produced at 313 K in a 1.32 L flask.
2 C4H10 (g) + 13 O2 (g) → 8 CO2 (g) + 10 H2O (g)
QUESTION 7
If 2.01 moles of nitrogen reacts with 4.96 moles of hydrogen, what is the maximum volume of ammonia (in L) that can be produced at a pressure of 1.03 atm and 347 K.
QUESTION 8
10.5 g of butane (58.12 g/mol) undergoes combustion according to the following equation. What pressure of carbon dioxide in atm is produced at 317 K in a 1.35 L flask.
1 points
QUESTION 9
Which of the following will influence the speed at which a gas leaks out of a balloon?
Temperature of the gas.
Size of the individual gas molecules
Mass of the indivisual gas molecules
QUESTION 10
An argon atom has a mass 10 times greater than a Helium atom. How many times faster is the helium atom's velocity?
QUESTION 11
What is the density (in g/L) of a sample of nitrogen gas that occupies a volume of 5.69L at a pressure of 3.93 atm and a temperature of 31.2oC?
QUESTION 12
A balloon contains 3.26L of helium at a temperature of 25.6oC and a pressure of 1.03 atm. What is the mass of helium in the balloon?
QUESTION 13
When measuring the volume and pressure of a real gas, are they expected to be larger or smaller than the values based on the ideal gas equation? Choose all correct answers.
Pressure of the real gas will be smaller than predicted.
Pressure of the real gas will be greater than predicted.
Volume of the real gas will be greater than predicted.
Volume of the real gas will be smaller than predicted.
QUESTION 14
Under which of the following conditions is a gas expected to behave most like an ideal gas? Choose all that apply.
Higher Pressures
Lower Pressures
Higher Temperatures
Lower Temperatures
QUESTION 15
At a certain temperature the vapor pressure of water is 17 torr. The pressure of the gas in a soda bottle (carbonated water) is measured to be 807 torr. What is the pressure (in torr) of the carbon dioxide in the soda bottle?
QUESTION 16
A sample of gas contains 4.17 moles of oxygen, 1.93 moles of nitrogen, and 1.71 moles of carbon dioxide. If the total pressure is 4.75 atm, what is the partial pressure of the oxygen in atm?
a solution of 100.0ml of .200 m koh is mixed with a solution of 200.00ml of .150m niso4.a write the balanced chemical
A sample of water is collected over water at a total pressure of 616.8 mmHg at 300 C. The vapor pressure of water at 300 C is 31.8 mmHg.
Cyclopropane (C3H6) reacts to form propene (C3H6) in the gas phase. The reaction is first order in cylclopropane and has a rate constant of 5.87*10^-4/s at 485 C.
What is the pH of a 1.00 L solution which initially has 0.042 mol acetic acid and 0.020 mol sodium acetate once 0.006 mols of NaOH has been added.
In the electrolysis of water, 2h20 yields 2h2 plus o2, if the volume of oxygen produced was 8ml, what would be the volume of hydrogen produced?
Problem- Changing the conditions of the reaction can alter the value of the change in free energy (?G). Sort the following conditions as to whether each would decrease the value of ?G, increase the value of ?G, or not change ?G for the reaction. F..
A solution containting 1.45g of an unknown substance in 26.5g of succinonitrile was found to freeze at 34.4 degrees celcius. what is the molar mass of the unknown substance.
Draw all possible isomers for the molecule having the formula C7H7C1. The molecule contains one benzene ring.
That depicts that two hydrogen atoms bond with one oxygen atom to make the compound we call water. If water comprises most of our body mass explain simply why there is a greater amount of oxygen by mass in our bodies than hydrogen.
The freezing point of t-butanol is 25.50°C and Kf is 9.1°C · kg/mol. Usually t-butanol absorbs water on exposure to air. If the freezing point of a 10.2 g sample of t-butanol is 24.59°C, how many grams of water are present in the sample?
A 247-ln fullback runs the 40-yd dash at a speed of 19.99 +/- 0.10 mi/h and has a wavelength of 7.79E-37. What is the uncertainty in his position based on the de Broglie wavelength
a sample of gas occupies 721 ml at 1.00 atm. the pressure is increased to 1.1 atm the temperature stays the same. what
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