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Jet001 [13]
3 years ago
11

Which statement about activation energy is true? a. It is not affected by catalysts. b. It has no effect on the rate of the reac

tion. c. It is the energy required to break existing chemical bonds. d. It is the same for all reactants.
Chemistry
2 answers:
TiliK225 [7]3 years ago
8 0
C. the energry required to break existing chemical bonds
Vsevolod [243]3 years ago
3 0
Activation energy is the term coined by the Swedish scientist Svante Arrhenius on 1889. The term is used to refer or describe the minimum energy which must be available for the system of chemicals to have a chemical reaction. Hence, the answer to the question is letter "C. It is the energy required to break existing chemical bonds". 
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lbvjy [14]

Answer:

Explanation:

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Incase of sulphide ore processing,

The metallic sulphide particles of ore are preferentially wetted by oil and the gangue particles by water. By doing thise you are sperating required sulphide ore particels from unwanted gaunge , by doing this you are incresing the concentation of Sulfide in ore by removing the not required gaunge particles.

Hope this helps you to decide your annswer

5 0
3 years ago
A chemist performs the same tests on two homogeneous white crystalline solids, A and B. The results are shown in the table below
Nookie1986 [14]

Solid A contains only Covalent bonds and solid B only contains Ionic bonds. I know this because the appearance, solubility, and conductivity of solid A describes Covalent bonds.

Explanation:

Try this, but idk if it will be marked as correct.

7 0
3 years ago
Shown below is a balance. Based on this instrument, identify from the following list all the statements that are true if you wer
kirill115 [55]

From the image shown, the uncertainty in the weighing balance extends to the hundredth place.

<h3>What is a balance?</h3>

A balance is any device that is used for measuring the mass or weight of an object. The balance is a necessary instrument in every laboratory.

Looking at the image shown, the following are true;

  • the uncertainty is in the hundredth place.
  • a mass that falls between 1 gram and 9 grams measured on this balance will always have 3 significant figures.

Learn more about weighing balance: brainly.com/question/8902159

5 0
2 years ago
Methyl bromide (CH3Br) is produced naturally by fungi. Methyl bromide has also been used in agriculture as a fumigant, but this
Troyanec [42]

Answer:

See image attached for structure of CH3Br

Explanation:

A lewis structure structure is a representation of a covalent compound in which dots are used to show valence electrons, lone pairs and bonding electrons. The system was introduced by sir G.N Lewis in 1916 in his article titled 'Atom and Molecule'. They are also called dot electron diagrams of molecules. CH3Br molecule contains a total of fourteen electrons. Valence electrons are shown by dots around the atom of each element as clearly seen in the image attached.

8 0
3 years ago
Proteins are large molecules. They enter a cell through
Lady bird [3.3K]

The answer is; active transport


This means that energy is expended in the process. Because large protein cannot be transported through protein channels in the plasma membrane for being too big, they are transported through endocytosis. This means a vesicle merges with the plasma membrane and forms an invagination that engulfs the protein. The vesicle then encloses with the protein inside and moves into the cell.


7 0
3 years ago
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