# Moles homework

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#1
I forgot how to work out Moles, the question is What is the mass od the following? A) Sodium (Na)
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2 years ago
#2
Look at the atomic mass of sodium on a periodic table.
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2 years ago
#3
Write out the formula for moles. Rearrange it to find mass.
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#4
(Original post by icequeenTM)
Write out the formula for moles. Rearrange it to find mass.
I got 23, what is the formula?
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2 years ago
#5
Moles = mass/molar mass
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#6
Need help with this question, How much would the following weigh in grams?

A) 0.8 moles of nickel (Ni)

I don't know the equation for this question.
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2 years ago
#7
(Original post by SBizzy)
Need help with this question, How much would the following weigh in grams?

A) 0.8 moles of nickel (Ni)

I don't know the equation for this question.
I think (moles is a problem area-especially with the harder questions):

0.8x28 (Ar for Ni) =22.4 g

Mass= Moles x Ar or Mr
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#8
(Original post by Bluecoffeebean)
I think (moles is a problem area-especially with the harder questions):

0.8x28 (Ar for Ni) =22.4 g

Mass= Moles x Ar or Mr
On the answers it says 47g..
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2 years ago
#9
(Original post by SBizzy)
On the answers it says 47g..
How would you work it out then because I'm sure I got the equation right?
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#10
(Original post by Bluecoffeebean)
How would you work it out then because I'm sure I got the equation right?
You tell me, I don't know the equation.
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2 years ago
#11
(Original post by SBizzy)
You tell me, I don't know the equation.
It is 47g but the equation is also right... now excuse me while I sit in a corner revising moles
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