The formula unit for copper is a single atom. Avogadro's Number is the number of atoms, formula units, or molecules per mole. (3.0 X 1021)/(6.022 X 1023) equals 5.0 X 10-3 moles, to the justified number of significant digits.
A mole of a metal such as copper is generally considered to consist of Avogadro's Number of atoms. Therefore, 3.05 X 1024 atoms constitutes (3.05 X 1024 )/(6.022 X 1023) or 5.06 moles, to the justified number of significant digits.
To do this, you simply need to take the amount of atoms and divide it by Avogadro's constant (one mole) or 6.02 × 1023.
(7.8 × 1021) ÷ (6.02 × 1023) ≈ 0.0130 moles Cu
3.92 X 10^24 atoms of copper (1 mole Cu/6.022 X 10^23)
= 6.51 moles of copper
21.92
24.6
1.3x102
4,5 moles of copper are equivalent to 285,957 g.
Divide that number of atoms by 6.02x10^23 atoms/mole
15.8 moles Cu x 6.02x10^23 atoms/mole = 9.51x10^22 atoms. There are no molecules in the element Cu (copper). Molecules are found when there are two or more atoms bound together, such as in H2 gas or H2O, etc.
4.0 moles Cu (6.022 X 1023/1 mole Cu) = 2.4 X 1024 atoms of copper ====================
3.4 mole Cu (6.022 X 10^23/1mol Cu ) = 2.047 X 10^23 atoms of copper.
4,5 moles of copper are equivalent to 285,957 g.
Divide that number of atoms by 6.02x10^23 atoms/mole
15.8 moles Cu x 6.02x10^23 atoms/mole = 9.51x10^22 atoms. There are no molecules in the element Cu (copper). Molecules are found when there are two or more atoms bound together, such as in H2 gas or H2O, etc.
4.0 moles Cu (6.022 X 1023/1 mole Cu) = 2.4 X 1024 atoms of copper ====================
14.0 g x 1 mole/187.56 g = 0.0746 moles0.0746 moles Cu(NO3)2 x 6 moles O/mole Cu(NO3)2 = 0.448 moles O atoms0.448 moles O atoms x 6.02x10^23 atoms/mole = 2.70x10^23 atoms of oxygen
3.4 mole Cu (6.022 X 10^23/1mol Cu ) = 2.047 X 10^23 atoms of copper.
3.7x10^3 millimoles is 3.7 moles. To convert moles to atoms, multiply by avagadro's number. 3.7 x 6.022x10^23 is 2.22814x10^24 atoms.
The formula for converting is: atoms ÷ Avogadro's constant = # moles (1.8 × 1023) ÷ (6.02 × 1023)= 0.299 moles Cu
When 3 moles Cu react 3 moles of copper nitrate are obtained.
The answer is 3 moles of Cu)NO3)2..
The molar mass of copper is its atomic weight on the periodic table in g/mol, and is 63.5g/mol We know that one mole of copper contains 6.022×10^23 atoms of copper . First convert given mass to moles, and moles to atoms. = 61.0 g Cu × (1 mol Cu / 63.5 g per mol) ×6.022 × 10 ^23 atom cu / 1 mol Cu) = 5.78× 10^23. atoms. 61 g Cu 5.7 ×10^23 atoms of Cu.
12