CHEMISTRY HIGH SCHOOL

What is internodes in chemistry​

Answers

Answer 1
Answer:

Explanation:

In chemistry, internodes refer to the points in the structure of a molecule or molecular chain where carbon atoms are located. Internodes are carbon atoms that are directly connected by a single bond. These carbon atoms are often called "C" followed by a number indicating their position in the chain. Carbon atoms that are not internodes are called "terminal carbons" and are bonded to other atoms or chemical groups. The structure of internodes and terminal carbons is important for understanding the geometry and reactivity of organic molecules.

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How would an electron shell model of an oxygen atom (O) appear after the atom has formed chemical bonds?a. It would have six electrons in the outermost shell.
b. It would have six electrons in the innermost shell.
c. It would have eight electrons in the outermost shell.
d. It would have eight electrons in the innermost shell.

Answers

oxygen atomic number is 8.

electron configuration of O is 2,6

therefore O has 6 valence electrons. valence electrons are electrons in the outermost shell that are involved in chemical bonds

atoms to become stable should fulfill the octet rule. This is where the outermost shell should have 8 electrons

so atoms with incompletely filled outer shells take part in chemical bonds to gain a complete octet and to become stable

So O too after forming a chemical bond would have 8 electrons in the outermost shell.

correct answer is

c. It would have eight electrons in the outermost shell.

Answer: I know I'm too late but for all you people that have an exam it is C.

Explanation:

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.

A few pieces of dry ice, CO2(s), at -78°C are placed in a flask that contains air at 21°C. The flask is sealed by placing an uninflated balloon over the mouth of the flask. As the balloon inflates, the dry ice disappears and no liquid is observed in the flask.State the direction of heat flow that occurs between the dry ice and the air in the flask.
Write the name of the process that occurs as the dry ice undergoes a phase change in the flask. [1]
Compare the entropy of the CO2 molecules in the dry ice to the entropy of the CO2 molecules in the inflated balloon.

Answers

Answer:

  • Heat flows from the air into the dry ice.
  • Sublimation (its when a solid becomes a gas without becoming a liquid first).
  • CO2 molecules in gaseous phse has more entropy than in solid phase.

Explanation:

  • To sublimate dry ice needs to fain energy, wich is provided by the surrounding air.
  • Solid is the more condensated state of matter, so it has less entropy than any other state of matter.
The direction of heat flow is from surroundings to system (air to ice), the dry ice is subliminating.

Why is salt put on icy roads and sidewalks in the winter?

Answers

so that ice would not melts and it helps to keep grip for walking or driving

Two girls are adding sugar to tea. one girl is stirring her tea and the other is not. the sugar willA. dissolve faster in the tea that is not stirred
B. dissolve at the same rate in both glasses
C.dissolve faster in the tea being stirred
D. not dissolve because stirring forms colloids

Answers

It is C. dissolve faster in the tea being stirred.
The answer is C. dissolve faster in the tea being stirred.

Stirring helps up in the speeding up of the process of dissolving.
Other factor is temperature. As temperature increases, its rate increases.

The valency of chlorine is one.why?​

Answers

Answer:

Explanation:

The electronic configuration of chlorine can be written as 2, 8, 7. ... Therefore, valence electron in chlorine is 7 and it needs to gain 1 electron from the outermost orbit to attain octet. Hence, the valency of chlorine is 1.
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