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4 years ago

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Chemistry

2 answers:

Alchen [17]4 years ago

8 0

D...........................

boyakko [2]4 years ago

6 0

D more particles in space= higher concentration, increasing reaction rate overall

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According to the collision theory and model created to explain the collision theory, what happens when a catalyst is used in a r

Anastasy [175]

<span>A catalyst is not consumed in a reaction. it is used in one step but reformed in another allowing it to be continually be used</span>

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3 years ago

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Which of the following are ionic, and which are molecular? (a) Sc2O3 ionic molecular (b) NaI ionic molecular (c) SCl2 ionic mole

tangare [24]

Answer :

Ionic compound : (a), (b), (d), (e), (f), (g) and (h)

Molecular compound : (c)

Explanation :

Ionic compound : It is defined as the compound which is formed when electron gets transferred from one atom to another atom.

Ionic compound are usually formed when a metal reacts with a non-metal.

Covalent compound : It is defined as the compound which is formed by the sharing of electrons between the atoms forming a compound.

The covalent compound are usually formed when two non-metals react.

All the polyatomic ions always form an ionic compound.

Polyatomic ions : It is a charged species that composed of two or more atoms and these charged species are bonded by the covalent bond.

As we know that the molecular compounds are the covalent compounds.

(a) Sc₂O₃

This is an ionic compound because it is made up of scandium metal and oxygen non-metal elements.

(b) NaI

This is an ionic compound because it is made up of sodium metal and iodine non-metal elements.

(c) SCl₂

This is an molecular compound because it is made up of sulfur and chlorine non-metal elements.

(d) Ca(NO₃)₂

This is an ionic compound because it is made up of calcium metal and polyatomic ion $(NO_3^-)$ non-metal elements.

(e) FeCl₃

This is an ionic compound because it is made up of iron metal and chlorine non-metal elements.

(f) LaP

This is an ionic compound because it is made up of lanthanum metal and phosphorous non-metal elements.

(g) CoCO₃

This is an ionic compound because it is made up of cobalt metal and polyatomic ion $(CO_3^{2-})$ non-metal elements.

(h) (NH₄)₂SO₄

This is an ionic compound because it is made up of ammonium ion and sulfate ion.

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3 years ago

What process do plants undergo to produce chemical energy?

Ahat [919]

Answer:

i think photosynthesis

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3 years ago

How many electrons does one neutrally charged atom of argon have?

padilas [110]

Answer:

A. 18

Explanation:

A neutral charged atom is an atom with 0 charge.

Anyway, first look at the periodic table and find Argon.

After you find Argon, look at its Atomic number.

Its Atomic number is 18.

And a neutral atom of Argon has 0 charge.

So we need 18 electrons for Argon to cancel out and become neutral.

Basic math:

18 +( -18) = 0

Therefore, the correct answer is A. 18

Hope it helped!

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3 years ago

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Considering how small atoms are, what are the chances that at least one of the atoms exhaled in your first breath will be in you

STatiana [176]

The answer is very probable because of how incredibly small atoms are

Very probable because of how incredibly small atoms are the chances that at least one of the atoms exhaled in your first breath will be in your last breath.

Hydrogen and oxygen always react in a 1:8 ratio by mass to form water. early investigators thought this meant that oxygen was 8 times more massive than hydrogen.

If you say that something is probable, you mean that it is likely to be true or likely to happen.

Everything around us is made up of really tiny molecules. However, such molecules are constructed from much smaller atoms. Then, even smaller protons, neutrons, and electrons are used to build those atoms. Quarks, which are even smaller particles than protons, make up protons.

The smallest unit of substance that may be disassembled without ejecting any electrically charged particles is the atom. The smallest piece of substance that displays an element's distinctive qualities is an atom. As a result, the atom serves as the basic unit of chemistry.

Learn more about smaller atoms brainly.com/question/28256098

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2 years ago