CHEMISTRY HIGH SCHOOL

All organic molecules have what element in common

Answers

Answer 1
Answer:

Every organic molecules/compound contains carbon (c).

Some other very abundant are hydrogen, nitrogen, oxygen, phosphorus, and sulfur.

I learned this with the acronym CHNOPS.

C - Carbon

H - Hydrogen

N - Nitrogen

O - Oxygen

P - Phosphorus

S - Sulfur

Hope this helps!
Answer 2
Answer:

Answer: The elements which are common for all organic molecules is hydrogen and carbon.

Explanation:

Another name for organic molecules are hydrocarbons. This means that the molecules which consist of hydrogen and carbon atoms is an organic compound.

For Example:

H_2O\text{ and }CO_2 are not organic compounds, because in water, carbon is not there and in carbon dioxide, hydrogen is not there. But, CH_4 is an organic compound because hydrogen and carbon both are present.

Hence, hydrogen and carbon elements are common to all organic molecules.

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A 5.00L balloon filled with 1.00 moles of O2 gas contains a total of how many liters?

Answers

To solve this we assume that the gas inside the balloon is an ideal gas and at STP. At standard temperature and pressure, it has been known that for 1 mol of a gas, the volume of this gas would be 22.4L. Therefore, the volume of O2 gas in the balloon would most likely be 22.4L.

What do the 14th Amendment and the Civil Rights Act of 1866 have in common?A. They were ways Congress sought to guarantee blacks the full rights of citizenship.B. They were efforts by Congress to solve economic problems in the South.
C. They were attempts by President Abraham Lincoln to end regional and racial divisions.
D. They were laws President Andrew Johnson supported to punish south slave owners.

Answers

A. They were ways Congress sought to guarantee blacks the full rights of citizenship.

Matt's cube, after 5 trials, had an average density of 7.40 g/cm3 . His group's cube was made ofA) aluminum.
B) gold.
C) nickel.
D) zinc.

Answers

The right answer for the question that is being asked and shown above is that: "B) gold." Matt's cube, after 5 trials, had an average density of 7.40 g/cm3 . His group's cube was made of B) gold. 

its d zinc if your using usa test this dummy got me wrong trust me sis the answer is d

What covalent bond is phosphorus and oxygen

Answers

Covalent bond

When two atoms react, they form either of two kinds of bond, ionic bondsor covalent bonds.Ionic bonds are the type of bonds where there is transfer of electrons from one atom to another.  The electrons are removed and from one atom and attached to  another. A good example is salt which is composed of sodium and chlorine. Sodium readily loses one of its electrons and chlorine readily accepts it. Before losing the electron, sodium has a positive charge, but then becomes negatively charged after giving up the electron. Chlorine has a positive charge before gaining the electron but becomes negatively charged after gaining the electron. These opposite charges between sodium and chlorine attract the two elements together to form the ionic bond.

Covalent bonds are the kind of bonds formed when two atoms share electrons. Here there is sharing, none of the atoms loses an electron and none gains. A good example is water which is formed when oxygen  shares two electrons, each with an atom of hydrogen. The Oxygen atom forms two covalent bonds with the pair of hydrogen atoms.

Which statement describes a major drawback of the Bohr model that caused scientists to replace it?a) It worked only for helium and larger atoms.
b) It did not identify the distance between an electron and the nucleus.
c) It contradicted the Heisenberg uncertainty principle.
d) It stated that spectral lines of atoms are similar.

Answers

The statement that best describe a major drawback of the Bohr model that caused scientists to replace it is it did not identify the distance between an electron and the nucleus. The answer is letter B. The rest of the choices don not answer the question above.

Answer: C

Explanation: Just took it

0.5 grams of sodium chloride is dissolved to make 0.05 liters of solution. How do I solve this?

Answers

The concentration of the solution has been 0.17 M.

The molarity has been defined as the moles of solute that has been dissolved in a liter of solution. The molarity of the solution has been expressed as:

\rm Molarity=(Mass)/(Molar\;mass)\;*\;(1)/(Volume\;(L))

Computation for Molarity of the solution

The molar mass of sodium chloride solution has been 58.5 g/mol.

The given mass of NaCl in the solution has been 0.5 grams.

The volume of NaCl solution has been 0.05 L.

Substituting the values for molarity of the solution:

\rm Molarity=(0.5)/(58.5)\;*\;(1)/(0.05\;L)\n\nMolarity=0.17 M

The concentration of the solution has been 0.17 M. The solution has been prepared by dissolving 0.5 g NaCl in minimal water, and makeup the volume to 0.05 L.

Learn more about molarity, here:

brainly.com/question/12127540
If you are trying to find the molarity of this solution you first need to find the number of moles of sodium chloride that are present in the 0.5g sample.  To do this you need to divide the mass of sodium chloride (0.5g) by its molar mass (58.45g/mol) to get 0.00855mol of sodium chloride.  Then you divide the number of moles (0.00855mol) by the volume of solution (0.05L) to get 0.171M (The units for molarity is mol/L).  Therefore the solution has a concentration of 0.171M.

I hope this helps.  Let me know in the comments if anything was unclear or if you were asking a different question.
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