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babunello [35]
2 years ago
13

Which answer choices correctly describe properties of covalent compounds? Select all that apply.

Chemistry
2 answers:
Lana71 [14]2 years ago
7 0

Answer:

Explanation:

A covalent compound is made when two or more nonmetal atoms bond by sharing valence electrons. The shared valence electrons between two nonmetal atoms is called a covalent bond. Covalent bonds are formed when two atoms begin sharing electrons

Ann [662]2 years ago
3 0

Question:

Which answer choices correctly describe properties of covalent compounds?

Select all that apply.

The electrons in covalent compounds are less mobile than the electrons in ionic compounds.

Covalent compounds' bonds are weaker than ionic compounds' bonds when placed in water.

Electricity is easily conducted in covalent compounds.

Covalent compounds' bonds are not broken apart when placed in water.

<u>Answer</u>:

Two statements that describes are:  

  • The electrons in covalent compounds are less mobile than the electrons in ionic compounds.
  • Covalent compounds' bonds are not broken apart when placed in water.

<u>Explanation</u>:

Covalent compounds are non-metals that are bonded together. They are generally made up of two electrons which are shared by two atoms. These compounds are formed through sharing of electrons and ionic compounds are formed by transferring of electrons. Thus, electrons in the covalent compound are less mobile.

Covalent compounds break apart into molecules when dissolving in water because they are non-polar. Thus, when mixed in the water they don’t break apart rather form their own separate layer.

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The side chain (R group) of the amino acid serine is CH₂OH. The side chain of the amino acid leucine is CH₂CH(CH₃)₂. In globular protein, leucine found in the interior, and serine found on the exterior. The nature of side chain decides the amino acid position in the globular protein , as CH₂CH(CH₃)₂ this is hydrophobic and CH₂OH is hydrophlic.

8 0
2 years ago
How many moles of BCl3 are needed to produce 10.0 g of HCl(aq) in the following reaction? (HCl molar mass is 36.46 g/mol).
Scilla [17]

Answer:

Moles of BCl₃ needed = 0.089 mol

Explanation:

Given data:

Moles of BCl₃ needed = ?

Mass of HCl produced = 10.0 g

Solution:

Chemical equation:

BCl₃ + 3H₂O  →     3HCl + B(OH)₃

Number of moles of HCl:

Number of moles = mass/molar mass

Number of moles = 10.0 g/ 36.46 g/mol

Number of moles = 0.27 mol

Now we will compare the moles of HCl with BCl₃.

               HCl             :           BCl₃

                 3               :             1

             0.27             :            1/3×0.27 = 0.089 mol

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Explanation:

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Respirometers were set up that contained yeast and 2% glucose solution. Each respirometer was placed at a different temperature.
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Temperature is the independent variable in this experiment

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