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arlik [135]
3 years ago
10

Molecules are different from atoms because they

Chemistry
2 answers:
tatyana61 [14]3 years ago
5 0
D) Contain Chemical bonds.
9966 [12]3 years ago
3 0

Answer: Option (D) is the correct answer.

Explanation:

Molecules are defined as the substances which contain same type of elements which are chemically combined to each other.

For example, Cl_{2} is a molecule which contains two same atoms that is, chlorine atoms.

In this molecule, the atoms are chemically combined together due to sharing of electrons. Hence, they tend to form covalent bonds.

Therefore, we can conclude that molecules are different from atoms because they contain chemical bonds.

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What kind of energy is required for photosynthesis to occur​
Makovka662 [10]

Answer:

light energy to convert carbon dioxide and water into glucose and oxygen gas. Each molecule of glucose essentially “stores” up to 38 molecules of ATP which can be broken down and used during other cellular reactions.

Explanation:

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3 years ago
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The equilibrium of 2H 2 O(g) 2H 2 (g) + O 2 (g) at 2,000 K has a Keq value of 5.31 x 10-10. What is the Keq expression for this
nevsk [136]

Answer:

5.31*10^{-10} = \frac{[]H_{2}]^{2}[O_{2}]}{[H_{2}O]^{2}}

Explanation:

For a chemical reaction, equilibrium is a state at which the rate of the forward reaction equals that of the reverse reaction. The equilibrium constant Keq is a parameter characteristic of this state which is expressed as a ratio of the concentration of the products to that of the reactants.

For a hypothetical reaction:

xA + yB ⇄ zC

The equilibrium constant is :

Keq = \frac{[A]^{x}[B]^{y}}{[C]^{z} }

The given reaction involves the decomposition of H2O into H2 and O2

2H_{2}O\rightleftharpoons 2H_{2} + O_{2}

The equilibrium constant is expressed as :

Keq = \frac{[]H_{2}]^{2}[O_{2}]}{[H_{2}O]^{2}}

Since Keq = 5.31*10^-10

5.31*10^{-10} = \frac{[]H_{2}]^{2}[O_{2}]}{[H_{2}O]^{2}}

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Lithification is the process of converting sediments into solid rock through compaction and cementation. true or false
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The Statement is True.
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What is NaCI and what is KBr?
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NaCl= sodium chloride or salt
KBr= potassium bromide
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