Determine the total mass of ethanol produced when 279. Grams of glucose rescts completely to form ethanol and 132 grams of carbon dioxide.

Answers

Answer 1

Answer:

The two main postulates that was given by Antoine Lavoisier are, oxygen play an important role in combustion and the other is mass of the reactant and product is conserved. The mass of ethanol is 147gram.

What is law of conservation of mass?

According to Law of conservation of mass, mass can neither be created nor be destroyed. Mass can only be transformed from one form to another. The law of conservation of mass was given by Antoine Lavoisier. Every reaction in nature follow the law given by Antoine Lavoisier that is mass is always conserved.

Glucose $\rightarrow$ ethanol+ carbon dioxide

Mass of glucose=279. Grams

Mass of carbon dioxide= 132 grams

According to law of conservation f mass

Mass of Glucose= mass of ethanol+ mass of carbon dioxide

Substituting the values we get

279. Grams = mass of ethanol+ 132 grams

Mass of ethanol =147gram

Therefore the mass of ethanol is 147gram.

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Answer 2

Answer: 279 g * (1 mol/180.559g glucose) * (2 mol ethanol/1 mol glucose) * (46.068g ethanol/1mol) =

142 g ethanol produced

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Which methods will help you properly identify pH with indicator paper? Check all that apply. Set a piece of pH paper in front of each solution before testing to keep organized. Dip the pH paper into each test tube and lay it on the table to let it change color. Use a transfer pipet to remove a few drops from the solution to drop onto the paper. Wait a minute or so before reading color. Use the same piece of indicator paper for each solution to conserve paper.

Answers

To identify pH with indicator paper,Set a piece of pH paper in front of each solution before testing to keep organized then, Use a transfer pipet to remove a few drops from the solution to drop onto the paper, Lastly Wait a minute or so before reading color.

What is a pH?

The pH is a measure of how acidic/basic a solution bythe amount of free hydrogen and hydroxyl ions in the water.

The range goes from 0 - 14, A point on 7 is neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates alkalinity.

A pH paper usually called litmus paper is used to determine if the acidity, basicity or neutrality of a solution. This is determined by the following process:

Set a piece of pH paper in front of each solution before testing to keep organized.
Use a transfer pipet to remove a few drops from the solution to drop onto the paper.
Wait a minute or so before reading color.

Now if the paper turns red, the pH may likely be below 7 to show acidity

if the paper turns blue the pH may likely be above 7 to show basicity/alkalinity.

if the paper turns green , the pH is 7 to show neutrality.

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Answer:

A) Set a piece of pH paper in front of each solution before testing to keep organized.

C) Use a transfer pipet to remove a few drops from the solution to drop onto the paper.

D) Wait a minute or so before reading color.

Liver cells require a great deal of energy which cell organelles would you except to appear in large number as a result

Answers

Mitochondria are the powerhouses of the cell, so mitochondria is the answer

Final answer:

Liver cells, which require a high amount of energy, contain large numbers of mitochondria, the organelles responsible for energy production in the form of ATP.

Explanation:

The cell organelles that you would expect to appear in large numbers in liver cells, which require a great deal of energy, are mitochondria. Mitochondria, often referred to as the 'powerhouses of the cell, are responsible for producing a molecule called adenosine triphosphate (ATP), which is the main source of cellular energy. Therefore, cells that require a lot of energy, like liver cells, tend to have many mitochondria in order to meet their energy demands.