Asample of gold (au) has a mass of 57.01 g. a) calculate the number of moles of gold (au) in the sample. show your work and highlight your final answer. chemistry

Number of moles is 0.2894 moles Au

Given:

Mass of gold= 57.01 g  

To find:

Number of moles

Formula:

Molar mass of gold= 196.97 g/mol.

By substituting we get(57.01 g Au) / (196.97 g/moles) = 0.2894 moles Au  

Hence we get number of moles=0.2894 moles Au

Note: Molar mass= Mass of the sample of a compound/Total amount of that substance in that sample. Molar masses of different substances are the standard value which are specifically arranged to each compound

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events in order:

1.       vishnu schist

2. zoroaster granite

3. bass limestone

4. hakatar   shale

5. igneous intrusion

6. shinumo quartzite

7. dox sandstone

8. tapeats limestone

9. bright angel shale

10. muav limestone

11. temple butte limestone

12. redwall limestone  

nonconformity

answer: the unkar group shows angular unconformity because the layers are turned at angle.

unconformity

answer: specifically the angular unconformity occurs between the cambrian and precambrian rocks. the dox sandstone, shinumo quartzite, hakatar shale, and bass limestone have been filled. an angular unconformity occurs between the cambrian and precambrian rocks. the dox sandstone, shinumo quartzite, hakatar shale, and bass limestone have been filled.

disconformity

answer: the disconformities aremarked irregular lines between the sedimentaryrocks layers.