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emperature. energy of gas molecules will with aln) At constant temperature, the average kinetic energy of...
When methanol, CH3OH, is burned in the presence of oxygen gas, O2, a large amount of heat energy is released. For this r...
When methanol, CH3OH, is burned in the presence of oxygen gas, O2, a large amount of heat energy is released. For this reason, it is often used as a fuel in high performance racing cars. The combustion of methanol has the balanced, thermochemical equation CH3OH(g)+32O2(g)⟶CO2(g)+2H2O(l)Δ?=−764 kJ How much methanol, in grams, must be burned to produce 807 kJ of heat? mass in grams:
1. If nitrogen gas has a density of 1.14 g/L, and an unknown gas has a...
1. If nitrogen gas has a density of 1.14 g/L, and an unknown gas
has a density of 4.2 g/L at the same temperature and pressure, what
is the ratio of the rate of effusion of the known gas to the rate
of effusion of nitrogen?
2. The combustion reaction for octane burning in oxygen is:
2 C8H18 (l) + 25 O2(g)
→ 16 CO2(g) +18 H2O(g)
∆H = -10869 kJ .
Suppose an oxygen bomb calorimeter is loaded with oxygen...
The gas ethane, C2H6(g), can be used in welding. When ethane is burned in oxygen, the...
The gas ethane, C2H6(g), can be used in welding. When ethane is burned in oxygen, the reaction is: 2 C2H6(g) + 7 O2(g)4 CO2(g) + 6 H2O(g) (a) Using the following data, calculate ΔH° for this reaction. ΔH°f kJ mol-1: C2H6(g) = -84.0 ; CO2(g) = -393.5 ; H2O(g) = -241.8 ΔH° = kJ (b) Calculate the total heat capacity of 4 mol of CO2(g) and 6 mol of H2O(g), using CCO2(g) = 37.1 J K-1 mol-1 and CH2O(g) =...
The average kinetic energy of the molecules in a gas sample depends only on the temperature, ?. However, given the same...
The average kinetic energy of the molecules in a gas sample depends only on the temperature, ?. However, given the same kinetic energies, a lighter molecule will move faster than a heavier molecule, as shown in the equation for rms speed rms speed=3??ℳ⎯⎯⎯⎯⎯⎯⎯⎯⎯√ where ?=8.314 J/(mol⋅K) and ℳ is molar mass in kilograms per mole. Note that a joule is the same as a kilogram‑meter squared per second squared (kg·m2/s2). What is the rms speed of O2 molecules at 357...
When methanol, CH3OH , is burned in the presence of oxygen gas, O2 , a large...
When methanol, CH3OH , is burned in the presence of oxygen gas, O2 , a large amount of heat energy is released. For this reason, it is often used as a fuel in high performance racing cars. The combustion of methanol has the balanced, thermochemical equation CH3OH ( g ) + 3/2 O2 ( g ) ⟶ CO2 ( g ) + 2H2O ( l ) Δ H = − 764 kJ How much methanol, in grams, must be burned...
The average kinetic energy of the molecules in a gas sample depends only on the temperature,...
The average kinetic energy of the molecules in a gas sample depends only on the temperature, 7. However, given the same kinetic energies, a lighter molecule will move faster than a heavier molecule, as shown in the equation for rms speed 3RT rms speed = where R = 8.314 J/mol K) and is molar mass in kilograms per mole. Note that a joule is the same as a kilogram-meter squared per second squared (kg-m/s). What is the rms speed of...
3. The specific heat of methane gas is 2.20 J/g • °C. If the temperature of...
3. The specific heat of methane gas is 2.20 J/g • °C. If the temperature of a sample of methane gas rises by 15 °C when 8.8 kJ of heat energy is added to the sample, what is the mass (in kg) of the sample? 4. It takes 0.805 kJ to raise the temperature of a 0.125 kg quantity of an unknown metal (gold, silver, or aluminum) from 25.00°C to 32.14°C. What is the specific heat of the metal (in...
6) (3 pts) A sample gas is composed of four components. The gas molecules in the...
6) (3 pts) A sample gas is composed of four components. The gas molecules in the picture below are representative of the overall concentrations in the sample. If the total pressure of the gas mixture is 4.0 atm, what is the partial pressure of gas A? = gas A gas A The partial pressure of (3 pts) Water has a vapor pressure of 0.30 atm at 340 K. What is the density of water vapor (g/L.) under these conditions? Dem...
The average kinetic energy of the molecules in a gas sample depends only on the temperature,...
The average kinetic energy of the molecules in a gas sample depends only on the temperature, T. However, given the sume kinetic energies, a lighter molecule will move faster than a heavier molecule, as shown in the equation for rms speed 3RT rms speed where R 8.314 J/(mol-K) and M is molar mass in kilograms per mole. Note that a joule is the same as a kilogram-meter squared per second squared (kg-m2/s2) What is the rms speed of O, molecules...
The average kinetic energy of the molecules in a gas sample depends only on the temperature,...
The average kinetic energy of the molecules in a gas sample depends only on the temperature, T. However, given the same kinetic energies, a lighter molecule will move faster than a heavier molecule, as shown in the equation for rms speed 3RT mms speed - VA where R = 8.314 J/mol K) and is molar mass in kilograms per mole. Note that a joule is the same as a kilogram-meter squared per second squared (kgm/s?). What is the rms speed...
1. If nitrogen gas has a density of 1.14 g/L, and an unknown gas
has a density of 4.2 g/L at the same temperature and pressure, what
is the ratio of the rate of effusion of the known gas to the rate
of effusion of nitrogen?
2. The combustion reaction for octane burning in oxygen is:
2 C8H18 (l) + 25 O2(g)
→ 16 CO2(g) +18 H2O(g)
∆H = -10869 kJ .
Suppose an oxygen bomb calorimeter is loaded with oxygen...
The average kinetic energy of the molecules in a gas sample depends only on the temperature, 7. However, given the same kinetic energies, a lighter molecule will move faster than a heavier molecule, as shown in the equation for rms speed 3RT rms speed = where R = 8.314 J/mol K) and is molar mass in kilograms per mole. Note that a joule is the same as a kilogram-meter squared per second squared (kg-m/s). What is the rms speed of...
3. The specific heat of methane gas is 2.20 J/g • °C. If the temperature of a sample of methane gas rises by 15 °C when 8.8 kJ of heat energy is added to the sample, what is the mass (in kg) of the sample? 4. It takes 0.805 kJ to raise the temperature of a 0.125 kg quantity of an unknown metal (gold, silver, or aluminum) from 25.00°C to 32.14°C. What is the specific heat of the metal (in...
6) (3 pts) A sample gas is composed of four components. The gas molecules in the picture below are representative of the overall concentrations in the sample. If the total pressure of the gas mixture is 4.0 atm, what is the partial pressure of gas A? = gas A gas A The partial pressure of (3 pts) Water has a vapor pressure of 0.30 atm at 340 K. What is the density of water vapor (g/L.) under these conditions? Dem...
The average kinetic energy of the molecules in a gas sample depends only on the temperature, T. However, given the sume kinetic energies, a lighter molecule will move faster than a heavier molecule, as shown in the equation for rms speed 3RT rms speed where R 8.314 J/(mol-K) and M is molar mass in kilograms per mole. Note that a joule is the same as a kilogram-meter squared per second squared (kg-m2/s2) What is the rms speed of O, molecules...
The average kinetic energy of the molecules in a gas sample depends only on the temperature, T. However, given the same kinetic energies, a lighter molecule will move faster than a heavier molecule, as shown in the equation for rms speed 3RT mms speed - VA where R = 8.314 J/mol K) and is molar mass in kilograms per mole. Note that a joule is the same as a kilogram-meter squared per second squared (kgm/s?). What is the rms speed...
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