Table of Contents
Why is the mileage a vehicle gets less when burning E85 than 100% gasoline? Ethanol has a lower heat combustion. If a snack cake contains 450 food Calories and Dr.
Which is produced in the greatest amount from a barrel of petroleum?
The U.S. uses far more oil than any other country. In 2017, it used more than 19 million barrels of oil every day. Gasoline is the major product made from crude oil.
How much heat would be produced if 1 mol of methane undergoes combustion?
The combustion of methane, CH4, releases 890.4 kJ/mol. That is, when one mole of methane is burned, 890.4 kJ are given off to the surroundings. This means that the products have 890.4 kJ less than the reactants. Thus, AH for the reaction = – 890.4 kJ.
Which is a correct statement of the second law of thermodynamics quizlet?
Which is a correct statement of the second law of thermodynamics? Energy cannot be created or destroyed, but it can change form.
Which is produced in the greatest amount from a barrel of petroleum quizlet?
asphalt. Which is produced in the greatest amount from a barrel of petroleum? gasoline’s resistance to causing knocking in a vehicle’s engine. Oxygenated gasolines are blends of petroleum-derived compounds with oxygen-containing compounds.
Why is the mileage a vehicle gets less when burning E85 than 100 percent gasoline quizlet?
Why is the mileage a vehicle gets less when burning E85 than 100% gasoline? Ethanol has a lower heat combustion.
How does crude oil become gasoline?
Gasoline is made when crude oil is broken into various petroleum products through a process of fractional distillation. The finished product is then distributed to gas stations through pipelines. Gasoline is essential to running most internal combustion engine cars.
Which fuel contributes least to global warming per kJ kJ of heat produced?
Thus, CH4 contributes the least to global warming per kJ of heat produced, since it produced the least amount of CO2 per 100. kJ heat produced.
How much energy is given off when 2.00 mol of CH4 are burned?
If 2 mol of CH4 is burned, then 1604 kJ of heat is released.
How much heat is released when 4.50 g of methane gas is burned?
How much heat is released when 4.50 g of methane gas is burned in a constant-pressure system? (Use the information given in Equation 5.15.) The negative sign indicates that 250 kJ is released by the system into the surroundings.
Why is it so expensive to ship hydrogen as a liquid?
being such a light element, hydrogen will not flow through pipelines the way natural gas or gasoline do. Hydrogen cannot easily be delivered from where it is produced to the places where it is needed.
Can energy be destroyed?
The law of conservation of energy states that energy can neither be created nor destroyed – only converted from one form of energy to another. This means that a system always has the same amount of energy, unless it’s added from the outside.
In which example is the entropy of the initial state greater?
In which example is the entropy of the initial state greater than the entropy of the final state? Liquid water freezes into ice (Remember that an increase in entropy means an increase in disorder in the system.).
What is cracking quizlet?
Cracking is the method of. splitting up long chained hydrocarbons. Cracking turns long alkane molecules into. smaller alkane and alkene molecules (which are more useful).
Which is a fossil fuel?
What Are Fossil Fuels? Coal, crude oil, and natural gas are all considered fossil fuels because they were formed from the fossilized, buried remains of plants and animals that lived millions of years ago. Because of their origins, fossil fuels have a high carbon content.
What is the form of stored energy in fossil fuels?
The energy in fossil fuels (coal, oil, gas) is Chemical Potential Energy. Fossil fuels come from decayed living matter that has stored energy in its chemical bonds (bonds of atoms and molecules). Coal, petroleum, natural gas, and propane are examples of fossil fuels that store chemical energy.
What happens to the atoms of the fuel as it burns?
When things burn, it looks like they are destroyed, but during any chemical reaction no particles are created or destroyed. The atoms in fuels are simply rearranged from the reactants to the products during combustion.
Which are isomers quizlet?
Isomers are compounds with the same molecular formula but different structural formulas. What is the difference between a structural and stereo isomer? A structural isomer has different bonds but a stereo isomer has same bonds but different spatial arrangement.
Which is a fossil fuel quizlet?
Fossil Fuels are natural fuels that are formed from the remains of living organisms. Fossil Fuels include petroleum, coal, natural gas, and propane. Fossil Fuels are used to fuel our cars and airplanes, power electricity plants, heat our homes, some medicines, and toothpaste which is partly made of oil.
Does cooking oil turn into gas?
Instead, the big, fragile molecules just break up. Which means that oil has no boiling point at all, and it is impossible to produce oil in a gas phase. (You can produce something similar to “oil vapor” with a mister, but this consists of tiny droplets of liquid oil, not a real gas).
How do you turn diesel into gasoline?
Diesel can be converted via chemical reaction into gasoline, though. If a refiner feeds diesel to a hydrocracking unit, the longer carbon chains are broken down into gasoline-range material. The naphtha from this unit is low octane, but that is then sent to a catalytic reformer to upgrade the octane.
How is diesel refine to crude oil?
Crude oil is often a dark, sticky liquid that cannot be used without changing it. The first part of refining crude oil is to heat it until it boils. The boiling liquid is separated into different liquids and gases in a distillation column. These liquids are used to make petrol, paraffin, diesel fuel etc.
How much carbon dioxide is produced when different fuels are burned?
“Different fuels emit different amounts of carbon dioxide (CO2) in relation to the energy they produce when burned.How much carbon dioxide is produced when different fuels are burned? Coal (anthracite) 228.6 Coal (subbituminous) 214.3 Diesel fuel and heating oil 161.3 Gasoline (without ethanol) 157.2 Propane 139.0.
