Answered

Get reliable answers to your questions at Westonci.ca, where our knowledgeable community is always ready to help. Explore thousands of questions and answers from knowledgeable experts in various fields on our Q&A platform. Explore comprehensive solutions to your questions from knowledgeable professionals across various fields on our platform.

A) How many moles of gold atoms are present in a 295-gram sample of gold? B) How many gold atoms would there be in the sample?

Sagot :

5 gram of 197 Au contain 1.53*10^22 atoms. so just multiply that with 59 to get 295 grams :)
thisisbenmanley
The molar mass of gold, Au, as seen on the periodic table, is 196.97 grams per mole. So, do this to find the number of moles in a 295 gram sample:

[tex](295g\ Au)(\frac{1mol\ Au}{196.97g\ Au}) = 1.49769mol\ Au[/tex]

So, a 295 gram sample of gold has about 1.5 moles of gold in it.

To find the number of atoms, multiply the number of moles by Avogadro's number:

[tex](1.49769mol\ Au)(\frac{6.022*10^{23}\ atoms}{mol}) = 9.02 * 10^{23}\ atoms\ Au[/tex]
Thank you for choosing our platform. We're dedicated to providing the best answers for all your questions. Visit us again. Thank you for your visit. We're dedicated to helping you find the information you need, whenever you need it. Thank you for choosing Westonci.ca as your information source. We look forward to your next visit.