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2 years ago

Which diagram shows a pattern similar to the emission spectrum of hydrogen?

Chemistry

1 answer:

rosijanka [135]2 years ago

3 0

Hello!

the correct answer would be b!

explanation: with increasing wavelength, it goes from higher energy to lower energy. since energy levels converge at higher energy levels, the answer b shows that the image of line becoming more separated than the following other answers

if this helps, click “thanks” :)

- emily

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How much heat is released during the formation of 3.18 mol HCl(g) in this reaction: H2(g)+Cl2(g) → 2HCl(g) with a H of -184.6 kJ

Vikentia [17]

The given thermochemical reaction is between hydrogen gas and chlorine gas to form hydrogen chloride.

This can be represented as:

$H_{2}(g)+Cl_{2}(g)-->2HCl(g)$ Δ $H_{reaction}^{0}$ =-184.6 kJ/mol

So when two moles of HCl is formed, 184.6 kJ of energy is released.

Calculating the heat released when 3.18 mol HCl (g) is formed in the reaction:

$3.18 molHCl*\frac{184.6kJ}{2molHCl} =293.5 kJ$

Therefore, 293.5 kJ of heat is released when 3.18 mol HCl is formed in the reaction between hydrogen and chlorine.

4 0

2 years ago

Read 2 more answers

What volume in<br><br> L<br><br> of a 0.724 M Nal solution contains 0.405 mol of Nal ?

Amanda [17]

Answer:

$0.5594\ \text{L}$

Explanation:

Mol of NaI = 0.405 mol

Molarity of solution = 0.724 M

Molarity is given by

$M=\dfrac{\text{mol}}{\text{Volume of solution in }NaI}\\\Rightarrow \text{Volume of solution in }NaI=\dfrac{0.405}{0.724}\\\Rightarrow \text{Volume of solution in }NaI=0.5594\ \text{L}$

The required volume is $0.5594\ \text{L}$ .

5 0

1 year ago

Among these processes, which is the slowest chemical reaction?

user100 [1]

After some thinking I have come to the conclusion that the answer is C.

8 0

2 years ago

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The reaction H+ + HCO3â€"" <--> H2CO3 is a part of the respiration process. It takes place at _____ . A. the lungs and tis

Paladinen [302]

Answer:

The tissue cells

Explanation:

I think you mean this

$H^{+}+HCO^{3} ^{-} H_{2}CO_{3}$

It all starts from Carbondioxide. This Carbondioxide is dissolved in the blood and taken by red blood cell and converted into carbonic acid. It then dissociates to form a bicarbonate ion $HCO^{3} ^{-}$ and a hydrogen ion $H^{+}$

This <--> means that the whole process is reversible. It is a buffer system to maintain the pH in the blood and duodenum. And also to support proper metabolic function.

6 0

1 year ago

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Write an equation that represents the action in water of rubidium hydroxide as an Arrhenius base.

Anika [276]

Answer:

RbOH → Rb⁺ + OH⁻

As the hydroxide can gives the OH⁻ in water, it is considered as an Arrhenius's base

Explanation:

Arrhenius theory states that a compound is considered a base, if the compound can generate OH⁻ ions in aqueous solution.

Our compound is the RbOH.

When it is put in water, i can dissociate like this:

RbOH → Rb⁺ + OH⁻

As the hydroxide can gives the OH⁻ in water, it is considered as an Arrhenius's base

3 0

1 year ago