CHEMISTRY HIGH SCHOOL

The incomplete breakdown of fat that occurs when carbohydrates are not available produces

Answers

Answer 1
Answer:

Answer;

Ketone bodies

Explanation;

  • Ketone bodies are produced by the liver and used peripherally as an energy source when glucose is not readily available.
  • They are produced from acetyl-CoA, mainly in the mitochondrial matrix of liver cells when carbohydrates are so scarce that energy must be obtained from breaking down of fatty acids.
  • Tissues that can use fatty acids can generally use ketone bodies in addition to other energy sources. The exceptions are the liver and the brain.

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The atomic masses in the Periodic Table are not integral numbers. For example, carbon is listed as 12.011 amu instead of 12.000 amu. Why?

Answers

The reason that the atomic masses shown on the periodic table include fractions, is to account for the other isotopes of the element, not just the pure element. Remember, an isotope is a atom of an element with a reduced or increased number of neutrons. This changes the atomic mass but not the charge. The number is calculated by multiplying the atomic mass of each isotope of the element with its percent abundance found in nature. Therefore it is an averaged atomic mass for all of the element. For example, carbon-12 may (I don't know the real numbers) have a % abundance of 98.5%, and carbon-14 may have a percent abundance of 1.5%, so that is why carbon would have an atomic mass greater than 12.000.

Which of the following is a correct definition of the term armature? A. A type of resistant wire B. A type of dry cell battery C. A circuit diagram D. A small lever in a relay switch

Answers

option a. a type of resistant wire

a revolving structure in an electric motor or generator, wound with the coils that carry the current.

Answer:

The correct option is: D. A small lever in a relay switch

Explanation:

Armature is a constituting part of an electric machine, that can be used as a stationary or rotating part. It is a conductor or a conducting coil that carries alternating current and can generate electromotive force.

In a solenoid, the movable steel or iron part that functions as a switch or relay is also termed as the armature.

The process of seeking facts that will lead to the truth is called _____.study
research
intuition

Answers

Answer:

The given blank can be filled with research.

Explanation:

The procedure of looking for facts, which will lead to the truth is known as research. In the absence of research one cannot conclude that the facts or statements are right. Research is illustrated as a systematic and creative work performed to enhance the stock of knowledge, comprising knowledge of culture and society, humans, and the application of this knowledge stock to device novel uses.
The process of seeking facts that will lead to the truth is called research.

When forces attracting solvent particles to each other are broken what is provided for a solution. 1. Energy for the solute to precipitate
2. Space for the solute in the solvent
3.Inertia for the solute to move into the solvent
4. Nothing is provided

Answers

The correct answer among the choices given is option 2. When forces attracting solvent particles to each other are broken, space is provided for the solute in the solvent. This is one of the steps in the dissolving process of a solute in a solvent.

Answer: Option (2) is the correct answer.

Explanation:

A solution consists of a solute and a solvent. A solute is present in less amount as compared to the solvent in a solution.

When forces attracting solvent particles are broken down then particles of the solvent move away from each other.

As a result, spaces will be formed between the solute particles and solvent molecules can easily react with it.

Thus, we can conclude that when forces attracting solvent particles to each other are broken then space for the solute in the solvent is provided for a solution.

What is the percent yield of NaCl if 31.0 g of CuCl2 reacts with excess NaNO3 to produce 21.2 g of NaCl?

Answers

First you need to find the balanced chemical formula.
CuCl₂+2NaNO₃→2NaCl+Cu(NO₃)₂

Then you can find out how much NaCl 31.0g of CuCl₂ should produce using stoichiometry.  Divide 31.0g by the molar mass of CuCl₂ (134.446g/mol) to get 0.2306mol CuCl₂.  Than multiply 0.2306mol CuCl₂ by 2 to get 0.4612mol NaCl.  Than multiply 0.4612mol by the molar mass of NaCl (58.45g/mol) to get 26.95g of NaCl.
that means that 100% yield would give you 26.95g of NaCl so to find percent yield divide 21.2 by 26.95 to get 0.7867 which is 78.7% yield

Therefore the answer is 78.7% yield.
I hope this helps.  Let me know if anything is unclear

What is the molarity of a solution that contains 0.50 mole of Naoh in 0.5p liter of solution

Answers

The concentration pertains to the molarity of the solution with an equation of mol of solution per liter of solvent.  

M (molarity) = moles of solute/L of solvent

M (molarity) = 0.5 mol NaOH / 0.5 L

M (molarity) = 1 M NaOH
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