Heat of Reaction
The energy of products is lower than that of the reactants.
What is an exothermic reaction?
Convert 4.00 atm to pascal.
1 atm = 101,325 Pa
What is 4.05 x 105 pascal?
In an underground gas reserve, a bubble of methane gas (CH4) has a volume of 45.0 mL at 1.60 atm pressure. What volume, in milliliters, will the bubble occupy when it reaches the surface where the atmospheric pressure is 744 mmHg, if there is no change in the temperature and amount of gas?
1 atm = 760 mmHg
What is 73.5 mL?
PV=nRT
What is the Ideal Gas Law?
In a storage area of a hospital where the temperature has reached 55 °C, the pressure of oxygen gas in a 15.0-L steel cylinder is 965 Torr. To what temperature, in degrees Celsius, would the gas have to be cooled to reduce the pressure to 850. Torr, when the volume and the amount of the gas do not change?
K= 273+C
What is 16.°C?
The energy of the products is higher than that of the reactions.
What is an endothermic reaction?
Convert 4.00 atm to millimeters of Hg.
1 atm = 760 mmHg
What is 3.04 x 103?
In an underground gas reserve, a bubble of methane gas (CH4) has a volume of 45.0 mL at 1.60 atm pressure. What is the new pressure, in atmospheres, when the volume of the methane gas bubble expands to 125 mL, if there is no change in the temperature and amount of gas?
Chlorine gas, Cls, is used to purify water. How many moles of chlorine gas are in a 7.00-L tank, if the gas has a pressure of 865 mmHg and a temperature of 24 °C?
R=0.0821 L/atm
K= 273+C
1 atm = 760 mmHg
What is 0.327 moles of Cl2?
An anesthetic consists of a mixture of cyclopropane gas, C3H6, and oxygen gas, O2. If the mixture has a total pressure of 1.09 atm, and the partial pressure of the cyclopropane is 73 mmHg, what is the partial pressure, in millimeters of mercury, of the oxygen in the anesthetic?
1 atm = 760 mmHg
What is 755 mmHg?
A reaction produces a product that is 92.0kJ higher than the reactants, what is delta H?
What is positive?
Convert 4.00 atm to inches of Hg.
1 atm = 29.9 inHg
What is 120. inHg?
A mountain climber inhales air that has a temperature of −8°C. If the final volume of air in the lungs is 569 mL at a body temperature of 37 °C, what was the initial volume of air, in milliliters, inhaled by the climber, if the pressure and amount of gas do not change?
K= 273+C
What is 486 mL?
Isobutane gas, C4H10, is used as a propellant in aerosol spray cans of whipping cream, shaving cream, and suntan spray. What is the pressure, in atmospheres, of 0.125 mole of isobutane in an aerosol can at 21 °C with a volume of 465 mL?
R=0.0821 L/atm
K= 273+C
What is 6.49 atm?
A balloon containing 8.00 g of oxygen gas has a volume of 5.00 L. What is the volume, in liters, after 4.00 g of oxygen gas is added to the 8.00 g of oxygen in the balloon, if the temperature and pressure do not change?
What is 7.50 L?
A reaction produces a product 393kJ lower than the energy of the reaction, what is delta H
What is negative?
Convert 76.00 torr to pascal.
1 atm = 760 torr
1 atm = 101,325 Pa
What is 1.013 x 104 Pa?
A hiker inhales 598 mL of air. If the final volume of air in the lungs is 612 mL at a body temperature of 37 °C, what was the initial temperature of the air in degrees Celsius?
K= 273+C
What is 30.°C?
Calculate the pressure, in atmospheres, of 2.00 moles of helium gas in a 10.0-L container at 27 °C.
R=0.0821 L/atm
K= 273+C
What is 4.93 atm?
An anesthetic contains nitrous oxide gas, N2O, and oxygen gas, O2. If the mixture has a total pressure of 786 mmHg and the partial pressure of the nitrous oxide is 0.110 atm, what is the partial pressure, in millimeters of mercury, of the oxygen in the mixture?
1 atm = 760 mmHg
What is 702 mmHg?
How much heat, in kilojoules, is released when H2 and N2 react to for 50.0g of NH3?
N2 + 3H2 = 2NH3 Delta H= -92.2kJ
NH3=17.03g/n
What is -135kJ?
Convert 309,726 Pa to inHg.
1 atm = 101,325 Pa
1 atm = 29.9 inHg
What is 91.3971 inHg?
A gas sample has a volume of 0.256 L with an unknown temperature. The same gas has a volume of 0.198 L when the temperature is 32 °C, with no change in the pressure and amount of gas. What was the initial temperature, in degrees Celsius, of the gas?
K= 273+C
What is 121 °C?
An oxygen gas container has a volume of 20.0 L. How many grams of oxygen are in the container, if the gas has a pressure of 845 mmHg at 22 °C?
R=0.0821 L/atm
K= 273+C
1 atm = 760 mmHg
O2 = 32 g/n
What is 29.4 grams of O2?
A balloon containing 8.00 g of oxygen gas has a volume of 5.00 L. More oxygen gas is added to the balloon until the volume is 12.6 L. How many grams of oxygen gas are in the balloon, if the pressure and temperature do not change?
What is 20.2 g of oxygen?