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HOW DO I CALCULATE THE PERCENTAGE BY MASS OF ETHANOL IN A MIXTURE?

First, determine the mass of ethanol in the mixture by dividing the mass of ethanol by the total mass of the mixture. Then, multiply the result by 100 to get the percentage by mass of ethanol in the mixture. For example, if a mixture contains 20g of ethanol in a total mass of 100g, the percentage by mass of ethanol would be (20g / 100g) * 100 = 20%.


When did you start putting ethanol in petrol?

Ethanol-blended petrol has been used in the United States since the 1970s as a way to reduce emissions and support renewable energy sources. The percentage of ethanol in petrol has increased over the years due to government mandates and incentives to promote the use of biofuels.


What percentage of ethanol is used in lager?

Lager usually contains around 3% to 6% alcohol (ethanol).


What is the percentage composition of ethanol?

Ethanol is composed of about 52.14% oxygen, 13.16% hydrogen, and 34.70% carbon by mass.


In order to bring ethanol to a boiling point while keeping the temperature at 35 degrees what would the pressure need to be reduced to?

The exact pressure would vary dependant on if you are referring to the boiling point of an ethanol azeotrope or absolute ethanol. For example the boiling point at 1 ATM for azeotropic ethanol is 78.15C and for absolute ethanol it is 78.4C. At a temperature of 35.0C azeotropic ethanol will boil in a vacuume pressure of 159.8 mbar/hPa or 119.9 mmHg/Torr where as absolute ethanol boils at a slightly lower pressure of 158.6 mbar/hPa or 119 mmHg/Torr.


How much does ethanol affect gas mileage?

It depends on the percentage of ethanol and the vehicle. My 1994 Chevy K2500 lost about 1 mpg on 11% ethanol.


How would the yield of ethanol at equilibrium change if the temperature was increased?

If you raise the temperature, the endothermic reaction will increase to use up the extra heat, therefore producing less percentage yield of ethanol and more of ethene and steam.


What percentage of ethanol is in gasoline?

Most places sell 10%


What percentage of the world production of ethanol is made in the UK?

12.5%


What percentage of ethanol is in pilot gasoline?

Typically, pilot gasoline contains around 1-2% ethanol. The percentage may vary depending on the specific regulations or fuel blends in use.


Does BP Amoco gasoline contain ethanol?

The only way to tell whether ethanol is present in gasoline is to look at the gasoline pump. If it contains ethanol, there should be a large sticker on it stating what percentage of ethanol is in the gasoline.


Is ethanol a liquid at room temperature?

Ethanol is indeed a liquid at standard temperature and pressure.