abbystafford15 abbystafford15
  • 22-10-2020
  • Chemistry
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How many moles of gold, a U, are in 3.60×10^-5 G of gold?

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TheProteanGirl
TheProteanGirl TheProteanGirl
  • 22-10-2020

Answer:

See Below.

Explanation:

This is a conversion problem:

Using the molar mass of Gold (given in a periodic table) which is 196.97g/mol

you have

[tex](3.60*10^-5 g) *\frac{1moles}{196.97g}[/tex]

you always arrange the equation in a way to cancel whatever you don't want (grams) and leave what you do want (moles). Here grams cancel (top and bottom), so you're left with:

[tex]\frac{(3.60*10^-5 g) *(1)}{196.97} = 1.83*10^-7[/tex] moles of Gold

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(3×10)+(4×1)+(5× 10 1 ​ )+(5× 100 1 ​ )+(6× 1000 1 ​ )