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Kryger [21]
3 years ago
7

Which of the following compounds contains the lead (iv) ion?

Chemistry
2 answers:
never [62]3 years ago
7 0

Answer A is right! :)

Oliga [24]3 years ago
6 0
Oxidation state of Pb in PbO2 is +4.
Oxidation state of Pb in PbCl2 is +2.
Oxidation state of Pb in Pb2O is +1.
Oxidation state of Pb in Pb4O3 is +6/4.

Hence option A. PbO2 is correct.
Hope this helps, have a nice day!
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What is the number of moles in 15.0 g AsH3?
pentagon [3]

We are given with the mass of Arsine (AsH_{3}

The mass of arsine is 15g

there is a relation between moles, mass and molar mass of any compound which is

moles=\frac{mass}{molarmass}

The molar mass of Arsine = atomic mass of As + 3X atomic mass of H

the molar mass of Arsine = 74.92 + 3X 1 = 77.92 g/mol

Let us calculate the moles as

moles=\frac{15}{77.92}=0.192mol


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What makes metalloids a group of their own?​
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Hope this helps u.. :D

8 0
3 years ago
Given a chemical equation, showing the dissociation of an acid in solution, be able to identify the "acid", the "base", the "con
Karo-lina-s [1.5K]

Explanation:

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Suppose acid Ha is getting dissociated in its solution and after dissociation it donates its proton to water molecule and forms conjugate base. Where as water (acting as a base) accepts protons and forms conjugate acid.

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For example:

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Sulfuric acid  = Acid

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4 years ago
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