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4 years ago

An atom's electrons have a great effect on

2 answers:

7 0

An atom's electrons have a great effect on how ''chemically reactive atom is".

An atom is a small particle that can exist or be combined with other atoms which forms a molecule. An atom is a chemical element.

Hope this helps :)

Dmitry [639]4 years ago

6 0

The correct answer is C. How chemically reactive the atom is.

Explanation:

An atom contains a nucleus with protons and neutrons as well as electrons negatively charged and bounded to the nucleus. Electrons do not affect the mass of the atom defined by the neutrons and protons, also they do not have and influence on the element the atom belongs to that is defined by protons but they affect magnetism and reactivity.

In terms of reactivity, this is mainly influenced by the number of electrons in the external shell of the atoms as this can form bonds with other atoms and therefore had a chemical reaction. Thus, an atom's electrons have a great effect on how chemically reactive the atom is.

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Elements in the same periodic table have the same

loris [4]

D is the correct answer.

The trend that follows a group (vertical lines) is that they each contain the same number of valence (outer) electrons

6 0

4 years ago

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Calculate ΔHo for the following reaction ussing the given bond dissociation energiesCH4(g) + 2O2(g) --> CO2(g) + 2H2O(g)BOND

Mazyrski [523]

Answer:

The ΔH° for the following reaction is -794 kJ, hence exothermic reaction,

Explanation:

$CH_4(g) + 2O_2(g)\rightarrow CO_2(g) + 2H_2O(g) ,$ ΔH° = ?

We are given with:

$\Delta H_{O-O}=142 kJ/mol$

$\Delta H_{O=O}=498 kJ/mol$

$\Delta H_{H-O}=459 kJ/mol$

$\Delta H_{C-H}=411 kJ/mol$

$\Delta H_{C-O}=358 kJ/mol$

$\Delta H_{C=O}=799 kJ/mol$

ΔH° =

(Energies required to break bonds on reactant side) - (Energies released on formation of bonds on product side)

$\Delta H^o=(1 mol\times 4\times \Delta H_{C-H}+2 mol\times 1\times \Delta H_{O=O})-(1 mol\times 2\times \Delta H_{C=O}+2 mol\times 2\times\Delta H_{H-O})$

$\Delta H^o=(1 mol\times 4\times 411 kJ/mol+2 mol\times 1\times 498 kJ/mol)-(1 mol\times 2\times 799 kJ/mol+2 mol\times 2\times 459 kJ/mol)$

$\Delta H^o=-794kJ$

$\Delta H^o>0$ endothermic reaction

$\Delta H^o$ exothermic reaction

The ΔH° for the following reaction is -794 kJ, hence exothermic reaction,

4 0

4 years ago

A three-carbon alkene contains two double bonds. Predict its molecular formula? A. C3H4 B. C3H5 C. C3H6

mestny [16]

The correct answer is A. C3H4 is the three-carbon alkene contains two double bonds. Alkenes are a class of organic compounds with carbon-carbon double bond. The structure for C3H4 is:
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H2C=C=CH2</span>

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4 years ago

How many grams of oxygen are needed to produce 5.40 g of water according to this equation? 2 H2 (g) + O2 (g) ⟶ 2 H2O (l)

garik1379 [7]

Explanation:

https://socratic.org/questions/using-the-equation-2-h2-o2-2-h2o-determine-how-many-grams-of-oxygen-will-be-need

8 0

3 years ago

Which answer best defines solute ?

Bad White [126]

Answer:

a substance that dissolves in another substance

Explanation:

a substance into which another substance dissolves

4 0

3 years ago

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