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How many moles of gold (Au # 79) are in 357.80 grams of gold?

2 Answers

6 votes

Answer:


moles_(Au)=1.8166molAu

Step-by-step explanation:

Hello,

In this case, since one mole of an element is related with its atomic mass, for gold whose atomic mass is 196.96657 g/mol, the corresponding number of moles turn out:


moles_(Au)=357.80gAu* (1molAu)/(196.96657g Au) \\\\moles_(Au)=1.8166molAu

Best regards.

User Stepanie
by
4.3k points
6 votes

Answer:

1.82moles

Step-by-step explanation:

Mass = 357.80g

Molar mass of gold (Au) = 196.97g/mol

Number of moles = mass / molar mass

Number of moles = 357.80 / 196.97

Number of moles = 1.8165 moles

The number of moles is approximately 1.82molespresent in 357.80g of Au

User Stevejb
by
4.5k points