<u>Question 1</u>
The formula mass of methanol is
g/mol.
Therefore, in 5.0 grams of methanol, there are
moles.
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<u>Question 2</u>
The formula mass of copper(II) carbonate is
g/mol.
This means that in 9.0 grams of copper(II) carbonate, there are
moles.
Using Avogradro's number, there are
molecules.
<u>Question 3</u>
The formula mass of cyclohexane is
g/mol.
So, 3.0 grams of cyclohexane is the same as
moles.
<u>Question 4</u>
The formula mass of benzene is
g/mol.
This means that 4.00 moles of benzene has a mass of
grams.
<u>Question 5</u>
1000 atoms of calcium is the same as
moles.
This is equal to
grams.
An element is stable when it has a full outershell.
Generally, most shells after the first can hold 8 electrons.
The first shell can only hold 2
So in order for neon to be stable it must have a full outer shell
The first shell can hold 2
Neon has 10 electrons
10-2=8
The second shell can hold 8
And neon has 8 electrons left
So it must have 8 valence electrons to be stable
It requires the allocation of resources.
To much letters and numbers