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3 years ago

What is the difference in electronegativity of each bond for both formaldehyde and ammonia?

Chemistry

1 answer:

Cerrena [4.2K]3 years ago

7 0

Answer:

The chemical formula of Formaldehyde is H₂CO and the structural formula is attached below,

The chemical formula of Ammonia is NH₃ and the structural formula is attached below,

FORMALDEHYDE:

As shown in structure, there are two different types of bonds in formaldehyde,

(i) C-H Bond

(ii) C-O Bond

So the electronegativity difference of these bonds are,

(i) C-H Bond

Electronegativity of Carbon = 2.5

Electronegativity of Hydrogen = 2.1

_______

Electronegativity Difference = 0.4 (non-polar bond)

(ii) C-O Bond

Electronegativity of Oxygen = 3.5

Electronegativity of Carbon = 2.5

_______

Electronegativity Difference = 1.0 (polar bond)

AMMONIA:

As shown in structure, there is one type of bond in ammonia, and that is N-H bond

So the electronegativity difference in this bond is,

N-H Bond

Electronegativity of Nitrogen = 3.0

Electronegativity of Hydrogen = 2.1

_______

Electronegativity Difference = 0.9 (polar bond)

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How much of a 0.250 M lithium hydroxide is required to neutralize 20.0 mL of 0.345M chlorous acid?

Bumek [7]

Answer:

27.6mL of LiOH 0.250M

Explanation:

The reaction of lithium hydroxide (LiOH) with chlorous acid (HClO₂) is:

LiOH + HClO₂ → LiClO₂ + H₂O

<em>That means, 1 mole of hydroxide reacts per mole of acid</em>

Moles of 20.0 mL = 0.0200L of 0.345M chlorous acid are:

0.0200L ₓ (0.345mol / L) = <em>6.90x10⁻³ moles of HClO₂</em>

To neutralize this acid, you need to add the same number of moles of LiOH, that is 6.90x10⁻³ moles. As the LiOH contains 0.250 moles / L:

6.90x10⁻³ moles ₓ (1L / 0.250mol) = 0.0276L of LiOH =

6 0

3 years ago

57.A cofactor is a(an)

Rudik [331]

A cofactor is an organic or inorganic molecule or ion necessary for proper functioning of some biological catalysts (option E).

<h3>What is a cofactor?</h3>

A cofactor in biochemistry is a molecule that binds to and regulates the activity of a protein.

A cofactor is a metal or coenzyme responsible for the functioning of an enzyme and must be present.

Therefore, a cofactor is an organic or inorganic molecule or ion necessary for proper functioning of some biological catalysts.

Learn more about cofactors at: brainly.com/question/13004767

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2 years ago

Which environmental concern does not apply to wind power?

wolverine [178]

<h2>Answer:</h2>

The correct answer is option C which is chemical waste.

<h3>Explanation:</h3>

Wind is the renewable source of the energy. The air has energy in it which is used to run the generator to produce electrical energy from the mechanical energy of wind.
Wind energy is perfect in sense of pollution. It does not create any chemical waste because there is no conversion or production of chemical energy involve in this energy production.
While bats and birds death is caused by the fans used to run generators and a huge noise is also created by the wind energy production.

3 0

4 years ago

PLEASE HELP!! WILL MARK BRAINLIEST

Andrew [12]

Answer:

The answer to your question is below

Explanation:

Trial 1 Trial 2

mass of Mg 0.255 g 0.353 g

mass of MgO 0.418 g 0.576 g

Chemical reaction

2Mg(s) + O₂(g) ⇒ 2MgO(s)

Question 1.

Atomic mass of Mg = 24.31 x 2 = 48.62 g

Molecular mass of MgO = 2(24.31 + 16) = 80.62 g

Trial 1

48.62 g of Mg ----------------- 80.62 g of MgO

0.255 g ---------------- x

x = (0.255 x 80.62)/48.62

x = 0.422 g of MgO

Trial 2 48.62 g of Mg ----------------- 80.62 g of MgO

0.353 g ---------------- x

x = (0.353 x 80.62)/48.62

x = 0.585 g of MgO

Question 2

Trial 1

Percent yield = 0.418/0.422 x 100 = 99%

Trial 2

Percent yield = 0.576/0.585 x 100 = 98.5%

Question 3

Average = (99 + 98.5)/2

= 98.75%

3 0

3 years ago

How many grams of sodium bicarbonate are in 1.8 x 1023 formula units?NaHCO3

Makovka662 [10]

Answer:

Mass = 25.2 g

Explanation:

Given data:

Number of formula units of NaHCO₃ = 1.8×10²³

Mass in gram = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ formula unit

1.8×10²³formula unit × 1mol / 6.022 × 10²³ formula unit

0.3 mol

Mass in gram:

Mass = number of moles × molar mass

Mass = 0.3 mol × 84 g/mol

Mass = 25.2 g

8 0

3 years ago