Question

1.A sample of gold (Au) has a mass of 35.12 g.

a.Calculate the number of moles of gold (Au) in the sample and record inTable 1. Show your work.

b.Calculate the number of atoms of gold (Au) in the sample and recordin Table 1. Show your work.

Answer 1

2.A sample of table sugar (sucrose,
C12H 22 O 11 ) has a mass of 1.202 g.

a.Calculate the number of moles of
C 12H 22 O 11 contained in the sample and record in Table 1. Show your work.

b.Calculate the moles of each element in
C12 H 22 O 11 and record in Table1.Show your work.

c.Calculate the number of atoms of each type in
C12 H 22 O 11 and record

Answer 2

1a.)
Gold (Au) has a mass of 35.12 g.
*Calculate the number of moles of gold (Au) in the sample:

Recall that:
Gold has a Molar Mass of: 197g/mol

Answer 3

2a.)
*Calculate the number of atoms in the sample -->
Recall that:
6.022x10^23 atoms in one mole

Answer 4

2.) C12H22O11 has a mass of 1.202 g.
Recall that C12H22O11 has a MM of = 342g/mol
Calculate the number of moles of C12H22O11 contained in the sample
Calculate the moles of each element in C12H22O11 in sample
Calculate the number of atoms of each type in C12H22O11

Answer 5

For the last part: recall that there are 6.022*10^23 atoms in one mole -->
so:

0.04214 Moles Carbon ( 6.022*10^23)= 2.538 * 10^22 Atoms Carbon
0.07726 Moles Hydrogen ( 6.022*10^23)= 4.653 * 10^22 Atoms Hydrogen
0.03863 Moles Oxygen ( 6.022*10^23)= 2.326 * 10^22 Atoms Oxygen

Answer 6

Thank you so much @sunnnystrong

Answer 7

NP :D Always happy to help!