1.
Boyles Law deals with what?
Correct Answer
A. Pressure and volume
Explanation
Boyle's Law states that the pressure of a gas is inversely proportional to its volume, given a constant temperature. This means that as the volume of a gas decreases, the pressure increases, and vice versa. Therefore, Boyle's Law deals with the relationship between pressure and volume.
2.
What is the ideal gas law?
Correct Answer
C. PV=NRT
Explanation
The ideal gas law, represented by PV=NRT, is a mathematical equation that describes the behavior of an ideal gas. It states that the product of the pressure (P) and volume (V) of a gas is directly proportional to the number of moles (N) of the gas, the ideal gas constant (R), and the temperature (T) in Kelvin. This equation allows us to calculate the value of any of the variables when the other three are known, providing a useful tool in various fields such as chemistry and physics.
3.
Which way would the equibrium shift for the equation, if you increase the temperature?
Correct Answer
A. Shift left
Explanation
Increasing the temperature of a reaction typically causes the equilibrium to shift in the direction that consumes heat, which is the left side of the equation. This is because an increase in temperature is considered as an increase in energy, causing the reaction to favor the endothermic direction in order to absorb the excess heat. Therefore, the equilibrium will shift to the left.
4.
Taking away heat favors what reaction?
Correct Answer
D. Exothermic
Explanation
Taking away heat favors the exothermic reaction. In an exothermic reaction, heat is released as a product, so removing heat from the system will shift the reaction towards the product side. This is because the reaction wants to counteract the decrease in temperature by releasing more heat. Therefore, taking away heat promotes the exothermic reaction.
5.
Gay-Lussacâ€™s law deal with?
Correct Answer
C. Temperature & pressure
Explanation
Gay-Lussac's law, also known as the pressure-temperature law, states that the pressure of a gas is directly proportional to its temperature, provided that the volume and the amount of gas remain constant. This means that as the temperature of a gas increases, its pressure will also increase, and vice versa. Therefore, Gay-Lussac's law deals with the relationship between temperature and pressure in a gas sample.
6.
How many torr. are there if there is 3.5 atm
Correct Answer
C. 2720
Explanation
The given question asks for the conversion of 3.5 atm to torr. The correct answer, 2720, is the conversion factor used to convert atm to torr. 1 atm is equal to 760 torr, therefore 3.5 atm is equal to 3.5 multiplied by 760, which gives us 2720 torr.
7.
What is the volume of any gas at STP?
Correct Answer
E. 22.4L
Explanation
The volume of any gas at STP is 22.4L. This is because at standard temperature and pressure (STP), which is defined as 0 degrees Celsius and 1 atmosphere of pressure, one mole of any gas occupies a volume of 22.4 liters.
8.
If there is .75 atm of H2, How many mmHG are there?
Correct Answer
C. 570MMhg
Explanation
The correct answer is 570 mmHg. This is because 1 atm is equal to 760 mmHg, so by converting .75 atm to mmHg, we multiply it by 760. Therefore, .75 atm is equal to 570 mmHg.
9.
Charlesâ€™s law deal with?
Correct Answer
B. Volume& temperature
Explanation
Charles's law states that the volume of a gas is directly proportional to its temperature, assuming that the pressure and amount of gas remain constant. This means that as the temperature of a gas increases, its volume also increases, and vice versa. Therefore, the correct answer is "volume & temperature" as Charles's law specifically deals with the relationship between these two variables.