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3 years ago

The number of d-electrons in Fe2+ (Z = 26) is not equal to that of

Chemistry

2 answers:

11Alexandr11 [23.1K]3 years ago

8 0

The correct answer is D.

vagabundo [1.1K]3 years ago

8 0

The answer is D i think

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According to Le Chatelier’s principle, a change in pressure affects the chemical equilibrium of the reaction system under what c

Marysya12 [62]

A change in pressure will affect the equilibrium position of the reaction if one or more of the reactants or products are in the gaseous phase.

Le Chatelier's principle states that whenever a change is brought about to a system under chemical equilibrium, the equilibrium shifts in a manner to reverse this change. So if the pressure of a reaction mixture is increased, the equilibrium will shift towards the side with the lower number of molecules, and if the pressure is reduced, the equilibrium will shift to the side with the greater number of molecules.

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3 years ago

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Consider 2 Al + 6 HCl → 2 AlCl3 + 3 H2 , the reaction of Al with HCl to produce hydrogen gas. What is the pressure of H2 if the

Margaret [11]

Answer : The pressure of hydrogen gas is 8.96 atm.

Explanation :

The given balanced chemical reaction is:

$2Al+6HCl\rightarrow 2AlCl_3+3H_2$

From the balanced chemical reaction we conclude that,

As, 2 moles of Al react to give 3 moles of $H_2$ gas

So, 4.50 moles of Al react to give $\frac{3}{2}\times 4.50=6.75$ moles of $H_2$ gas

Now we have to calculate the moles of $H_2$ gas when percent yield is 75.4.

$\text{The moles of }H_2=75.4\% \times 6.75=\frac{75.4}{100}\times 6.75=5.09moles$

Now we have to calculate the pressure of $H_2$ gas.

Using ideal gas equation :

PV = nRT

where,

P = Pressure of hydrogen gas = ?

V = Volume of the hydrogen gas = 14.0 L

n = number of moles of hydrogen gas = 5.09 moles

R = Gas constant = $0.0821L.atm/mol.K$

T = Temperature of hydrogen gas = 300 K

Putting values in above equation, we get:

$P\times 14.0L=5.09mol\times 0.0821L.atm/mol.K\times 300K\\\\P=8.96atm$

Therefore, the pressure of hydrogen gas is 8.96 atm.

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3 years ago

What are the branch-chain Alkanes?

snow_tiger [21]

Answer:

The top branch-chain is a Isobutane branch. And the bottom branch chain is a Neopentane branch

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3 years ago

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11. Which of the following statements describe anions? Select all that apply.

Sveta_85 [38]

The two first ones because it’s always the opposite

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2 years ago

How does energy flow through the reef ecosystem?

Free_Kalibri [48]

Photosynthesizing plants and algae convert light energy into chemical energy, which then gets passed through the food web to plant eaters, flesh eaters, and ultimately to scavengers and decomposers.

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3 years ago