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UkoKoshka [18]
3 years ago
8

Select the correct answer. Which statement best explains the octet rule? A. Atoms gain, lose, or share electrons to achieve a fu

ll valence shell. B. Compounds always consist of eight electrons. C. Molecules always consist of eight atoms. D. All atoms require eight electrons to form bonds.
Chemistry
2 answers:
ASHA 777 [7]3 years ago
6 0

A. Atoms gain, lose, or share electrons to achieve a full valence shell.

Oduvanchick [21]3 years ago
6 0
<h2>Answer </h2>

Option A - Atoms gain, lose, or share electrons to achieve a full valence shell.

<u>Explanation</u>

The octet rule is best explained as atoms gain, lose, or share electrons to achieve a full valence shell complete or to attain electronic configuration of noble gases. The main objective to do this is to attain stability.  The octet rule is a rule that shows the view that atoms of elements serve to join like that each atom has eight electrons in its valence shell, providing it the same electron configuration as a noble gas.

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If you have 3 moles of FeCl3, how many moles of MgCl2 can be produced? FeCl3 + Mg --&gt; MgCl2 + Fe
oksian1 [2.3K]

Answer: 154.09 g

Explanation:

3 Mg + 2 FeCl3 = 3 MgCl2 + 2 Fe

The mass of MgCl2 produced is calculated:

m MgCl2 = 175 g FeCl3 * (1 mol FeCl3 / 162.2 g) * (3 mol MgCl2 / 2 mol FeCl3) * (95.21 g MgCl2 / 1 mol) = 154.09 g

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3 years ago
Assume that the half-life of an M&amp;M is 15 seconds A. you start with M&amp; M's, how many would be left unchanged after 1 min
Nata [24]

Answer:

See below

Explanation:

1 minute is   4 halflives    ( because  4 x 15 sec = 1 minute)

(1/2)^4 = 1/16

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2 years ago
How do you calculate molar mass for covalent molecules and for ionic compounds? explain.​
RideAnS [48]

Answer:

See the explanation and examples below, please.

Explanation:

To calculate the molar mass of a substance you must have the atomic weights of each component:

Example NaCl ionic compound (sodium chloride, known as table salt)

Molar mass NaCl = Atomic weight Na + Atomic weight Cl = 22, 98 gr + 35, 45gr = 58.35 grams / mol

Example covalent compound HCl (hydrochloric acid) = Atomic weight H + Atomic weight Cl = 1, 004gr + 35, 45 gr = 36, 45 grams / mol

In the case of having compound H20 (water), it is calculated:

Molar mass NaCl = 2 x (Atomic weight H) + Atomic weight 0 (the atomic weight of 1 mol of Hydrogen is multiplied by 2)

6 0
3 years ago
Read 2 more answers
Need answer asap .. <br> -20 points! asap please ..
olga_2 [115]

Answer:

[tex]\purple{\rule{45pt}{7pt}}\purple{\rule{45pt}{999999pt}}[tex]

Explanation:

[tex]\purple{\rule{45pt}{7pt}}\purple{\rule{45pt}{999999pt}}[tex]

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2 years ago
Atrial natriuretic peptide is a hormone that controls blood pressure in part by increasing the urinary excretion of sodium. True
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Answer:

The answer is "true"

Explanation:

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3 years ago
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