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DerKrebs [107]
3 years ago
5

You see a structural formula in which the symbols for elements are connected by a long dash. You can assume that the chemical bo

nds in the compound are
A. ionic.

B. covalent.

C. metallic.

D. unstable.
Chemistry
2 answers:
krok68 [10]3 years ago
6 0

Answer: Option (B) is the correct answer.

Explanation:

In a covalent bond, the formation of bond occurs by sharing of electrons. This is represented by a long dash when we write the formula.

Whereas ionic bond is formed by transfer of electrons and there are strong force of attraction between the ionic compounds. So, they are represented by a slightly short dash in the formula.

Shkiper50 [21]3 years ago
4 0
<span>You see a structural formula in which the symbols for elements are connected by a long dash. I can assume that the chemical bonds in the compound are covalent.</span>
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8.0 mol AgNO3 reacts with 5.0 mol Zn in
Yakvenalex [24]

Taking into account the reaction stoichiometry, 8 moles of Ag can be produced from 8 moles of AgNO₃ and 5 moles of Zn.

<h3>Reaction stoichiometry</h3>

In first place, the balanced reaction is:

2 AgNO₃ + Zn → 2 Ag + Zn(NO₃)₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

  • AgNO₃: 2 moles
  • Zn: 1 mole
  • Ag: 2 moles
  • Zn(NO₃)₂: 1 mole

<h3>Limiting reagent</h3>

The limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.

<h3>Limiting reagent in this case</h3>

To determine the limiting reagent, it is possible to use a simple rule of three as follows: if by stoichiometry 1 mole of Zn reacts with 2 moles of AgNO₃, 5 moles of Zn reacts with how many moles of AgNO₃?

amount of moles of AgNO_{3}= \frac{5 moles of Znx2 moles of AgNO_{3}}{1 mole of Zn}

<u><em>amount of moles of AgNO₃= 10 moles </em></u>

But 10 moles of AgNO₃ are not available, 8 moles are available. Since you have less moles than you need to react with 5 moles of Zn, AgNO₃ will be the limiting reagent.

<h3>Moles of Ag formed</h3>

Considering the limiting reagent, the following rule of three can be applied: if by reaction stoichiometry 2 moles of AgNO₃ form 2 moles of Ag, 8 moles of AgNO₃ form how many moles of Ag?

amount of moles of Ag=\frac{8 moles of AgNO_{3}x2 moles of Ag }{2 moles of AgNO_{3}}

<u><em>amount of moles of Ag= 8 moles</em></u>

Then, 8 moles of Ag can be produced from 8 moles of AgNO₃ and 5 moles of Zn.

Learn more about the reaction stoichiometry:

<u>brainly.com/question/24741074</u>

<u>brainly.com/question/24653699</u>

#SPJ1

4 0
2 years ago
I need help with Hess law
ICE Princess25 [194]

Answer:

alright

Explanation:

Hess law is  the enthalpy change for a reaction that is carried out in a series of steps is equal to the sum of the enthalpy changes for the individual steps. Consistent with the law of conservation of energy. Starting and final conditions must be the same.

6 0
3 years ago
An element has an atomic number of 76. The number of protons and electrons in a neutral atom of the element are ____.
dmitriy555 [2]

Answer:

76 protons 76 electrons

Explanation:

The atomic number in a element is equal to the elements protons and electrons. In this case if the atomic number is 76 the number of protons and electrons would also be 76.

Hope this helps.

8 0
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lbvjy [14]

Answer:

Running, Peeing.

Explanation:

8 0
3 years ago
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When OH- and H+ ions are brought together, they quickly combine to form water molecules.
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When OH- and H+ ions are brought together, they quickly combine to form water molecules.

a. True
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The statement “When OH- and H+ ions are brought together, they quickly combine to form water molecules” is true. The answer is letter A.

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