6. Calculate: Press Reset. Start with 1.900 x 1024 (or 19.00 ~ 1023) molecules of Cu, o. A. Calculate the number of moles:
close
B. Use the Gizmo to verify your calculation. Were you correct?
C. Is the method Ir converting molecules to moles the same as that
for atoms?
Questions 4 an

the answer is b & c i believe : )

fe 55.85 g/mol and h2o 18.02 g/mol.

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o