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Deffense [45]
3 years ago
13

This chemical equation represents one of the reactions that form acid rain.

Chemistry
1 answer:
hram777 [196]3 years ago
7 0

Answer:

A and B

Explanation:

Acid rain is formed when rain water has a pH of about 5.2 or below. It is caused by the presence of the oxides of nitrogen or sulphur in air. These oxides dissolve in rain water to form the corresponding mineral acids thereby decreasing the pH of rainwater.

If we look at the reaction;

2NO2 + H2O ---> HNO2 + HNO3

We will discover that the bonds broken are the bonds between;

I) H and O in H20

ii) N and O in NO2

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After mixing an excess PbCl2 with a fixed amount of water, it is found that the equilibrium concentration of Pb2 is
Tanzania [10]

Answer:

Ksp = 8.8x10⁻⁵

Explanation:

<em>Full question is:</em>

<em>After mixing an excess PbCl2 with a fixed amount of water, it is found that the equilibrium concentration of Pb2+ is 2.8 × 10–2 M. What is Ksp for PbCl2?</em>

<em />

When an excess of PbCl₂ is added to water, Pb²⁺ and Cl⁻ ions are produced following Ksp equilibrium:

PbCl₂(s) ⇄ Pb²⁺ + 2Cl⁻

Ksp = [Pb²⁺] [Cl⁻]²

If an excess of PbCl₂ was added, an amount of Pb²⁺ is produced (X) and twice Pb²⁺ is produced as Cl⁻ (2X):

Ksp = [X] [2X]²

Ksp = 4X³

As X is the amount of Pb²⁺ = 2.8x10⁻²M:

Ksp = 4(2.8x10⁻²)³

<h3>Ksp = 8.8x10⁻⁵</h3>
4 0
3 years ago
_ S8 +_02 +_ SO3
BigorU [14]
My educated guess should be the 3rd one
3 0
3 years ago
For the following Bronsted acid-base reaction, complete the reaction, identify the acid, base, conjugate
madam [21]

Answer:

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7 0
2 years ago
How many moles are 21.67 L of NH4CI?<br> Type your answer...
NNADVOKAT [17]

Answer:

0.967mole

Explanation:

Given parameters:

Volume of NH₄Cl  = 21.67L

Unknown:

Number of moles  = ?

Solution:

We assume that the volume was taken at standard temperature and pressure,

 Then;

  Number of moles  = \frac{volume }{22.4L}  

 Number of moles  = \frac{21.67}{22.4}   = 0.967mole

6 0
2 years ago
When there are more electrons than protons an object has an overall<br> charge.
azamat

Answer:it would have a negative charge because  electrons are negative

Explanation:

7 0
3 years ago
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