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3 years ago

Which bond from each set is the longest N-O or N=O

Chemistry

2 answers:

AURORKA [14]3 years ago

5 0

Answer:

N-O is longer

Explanation:

Length of a covalent bond decreases with increase in electron density between two bonded atoms. Because increase in electron density produces more negative charge density between two bonded atoms. Hence this negative charge density strongly attract positively charged bonded nucleus towards itself.
Electron density in a covalent bond increases if there exists pi bond along with a sigma bond. Higher the number of pi bonds, higher will be electron density.
Therefore bond in N=O is more electron dense. Hence N=O bond is shorter and N-O is longer.

stiv31 [10]3 years ago

3 0

The bond is N=O because N-O is short

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Which is an acceptable Lewis structure for a diatomic nitrogen molecule?

Marina86 [1]

Answer:
Acceptable Lewis structure of Diatomic Nitrogen Molecule is as follow,

:N≡N:

Explanation:
The given lewis structure is acceptable because each nitrogen atom has a complete octet and and the formal charge of each nitrogen atom is zero. So those lewis structures which has zero or least formal charges are said to be more stable and acceptable. The formal charge is calculated is,

Formal Charge = # of Valence e⁻s - [# of non-bonded e⁻ + 1/2 # of bonded e⁻]

For N,

Formal Charge = 5 - [ 2 + 6/2]

Formal Charge = 5 - [ 2 + 3 ]

Formal Charge = 5 - 5

Formal Charge = 0

Same result will come for the second N atom.

4 0

3 years ago

Using the equation 40kJ+2SO3(g)-->2SO2(g) + O2(g), if pressure is added what way

Ad libitum [116K]

In an equation, 40kJ + 2SO₃ (g) -->2SO₂(g) + O₂(g), if pressure added, the equilibrium shifts to the left side of the reaction because it has fewer moles of gas.

<h3>What is Le Ch atelier's principle?</h3>

Le Ch atelier's principle states that if the pressure is added in a nay reaction, then the equilibrium will be shifted toward the side where there are fewer atoms.

In this case, there are fewer moles on the left side.

Thus, when pressure is added, the equilibrium shift to the left side due to Le Ch atelier's principle.

Learn more about Le Ch atelier's principle

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6 0

2 years ago

A solution contains 0.5 moles of MgSO4 dissolved in 0.6 liters of water. In water MgSO4 dissociates into one Mg2 particle and on

mr_godi [17]

Answer:

1.7 Osm/L

Explanation:

Osmotic concentration is the number of osmoles (Osm) of solute per litre of solution .

$\text{Osmotic concentration} = \dfrac{\text{No. of osmoles }}{\text{Litres of solution}}$

An osmole is the number of moles of solute that contribute to the osmotic pressure of a solution.

1 Osm = i × n, where

i = the van't Hoff i factor and

n = the number of moles

The van't Hoff i factor is the number of solute particles obtained from 1 mol of solute.

For example,

MgSO₄(aq) ⟶ Mg²⁺(aq) + SO₄²⁻(aq)

1 mol of MgSO₄ produces 2 mol of ions in solution, so i = 2.

$\text{Osmotic concentration} = \dfrac{\text{1.0 Osm}}{\text{0.6 L}} = \textbf{1.7 Osmol/L}$

7 0

3 years ago

Rx: Codeine phosphate 30 mg/tsp Tussin syrup 30mL Elixophyllin qs 240 mL Sig: 5mL qid pc hs If 5 mL of Tussin syrup contains 100

kotykmax [81]

Answer:

50 mg.

Explanation:

From the prescription, 240 ml amount is to be prepared containing 30 ml tussin syrup. As the frequency is 5 mL qid, it means 5mL of syrup is to be administered four times daily i.e. 20 mL daily. To calculate the amount of tussin taken daily,

30 mL tussin = X mL of tussin

240 mL solution 20ml solution

⇒ 2.5 mL of tussin

5 ml tussin contains 100mg guafenesin,

So,

⇒ 2.5 ml of tussin contains 100x2.5/5 = 50 mg guaifenesin

4 0

4 years ago

A tank contains helium gas at 1.50 atm. What is the pressure of the gas in mmHg?

creativ13 [48]

1.50 atm(760 mmHg/1 atm)=1140 mmHg

7 0

3 years ago