What element is found in all organic molecules?

Answers

Answer 1
Answer:

Answer:

The answer is Carbon

Explanation:

Organic compounds are considered to be all those chemical substances that contain some carbon atom in their molecule. Besides carbon, hydrogen is an important element in its constitution.

Carbon molecules unite with each other very easily, developing basic skeletons in all organic compounds. These chains can have different lengths and shapes.

Each carbon atom has a valence of 4 and the bonds in organic compounds are covalent, with the possibility of double or triple bonds.

Organic compounds can also contain other types of chemical elements other than carbon (oxygen, nitrogen, sulfur, etc.) called functional groups. A wide variety of organic compounds are formed from these functional groups.

Answer 2
Answer: C Carbon .............

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The SI base unit called the mole represents what?

Answers

Answer:

The mole, symbol mol, is the SI unit of amount of substance.

Explanation:

How many grams of Cl are in 535 g of CaCl2?

Answers

m(Ca Cl_(2))=535 g
m(Cl)=?
The molar mass of CaCl_(2) = 40.08 + 2 * 35.45 = 110.98 
The atomic mass of Cl: 35.45 ( you can see it in the Periodic table) 
110.98 g CaCl_(2)- 35.45 * 2 g Cl
535 g CaCl_(2) - x g Cl
Proportion:
110.98 : 535 = (35,45 * 2) : x
x = 535 * 35.45 * 2 / 110.98 = 37,931.5/110.98 = 341.79 g
Answer: m(Cl)=341.79 g

Absolute 0 is the point at whichA. ice melts.
B. water boils.
C. water freezes.
D. molecular motion stops.

Answers

The answer is when molecular motion stops

What do chemists measure concentration with?

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how to calcutate concentration of solution.
there is 12gram of solute in a 36 gram solution
then you take 12 divided by 24 because 36-12=24 which is youe solvent

I think they use testubes.

The metric unit of force is the

A. newton
B. pound
C. kilogram
D. watt

Answers

Answer:

Newton

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A particle has 5 protons, 6 neutrons, and 5 electrons. What is its net charge.

Answers

It would have a zero charge because it is a neutral atom. The number of electrons which is a negative charge is equal to the number of protons which is positive, they will cancel each other out hence meaning it will become neutral