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Determine the number of moles in each of the following:?
A.) 5.53 x 10^23 atoms of Mg
B.) 1.801 x 10^23 atoms of Br
C.) 4.412 x 10^22 atoms of P
D.) 5.108 x 10^24 atoms of S
Determine the number os atoms in each of the following:
E.) 22.8 grams of Co
F.) 35.4 grams of Ag
G.) 12.3 grams of H
3 Answers
- bob walkerLv 79 years agoFavorite Answer
For A,B,C and D divide the first part of the number by 6.02.
For the E,F and G, find out how many maoles there are and then multiply by Avagadro's number. To do this, divide the listed weight by the atomic weight of the element and then multiply by 6.02 x 10^23.
- Anonymous9 years ago
this is for finding moles in a given mass:
Take the given mass, in g. Divide it by molar mass of that element or compound (or multiply it by mol / x g). You will see that the units g (grams) cancel, leaving mol (moles).
Hope that helps! :D
- ridgleyLv 44 years ago
to verify it out, write its reaction and stability it.. A) Na2SO4--->2Na+SO4- B) NH4C2H3O2--->NH4+ +C2H3O2- C) CaCl2--->Ca^2+ + 2Cl- d) CaSO4--->Ca^2+ + SO4^2- ======= Then, upload each coeficient each and each ather of each and each rection. you will discover its complete of ions moles
