Number of copper atoms = moles of copper x Avogadro's number = 5.7x6.02x10^23 = 3.43x10^24 atoms.
Answer:
,m.m.m.m.m..mm.m.m...........................................
Explanation:
Answer:
The "unit" remaining after conversion is atoms.
This is a way to calculate the number of atoms, in an specific mass.
Explanation:
When you have a mass, multiplying the molar mass, "grams" are cancelled, so you finally obtained, number of moles.
Moles . atoms/mol, cancel the word mol so you will find out a number of atoms, present at the mass from, the begining.
For example, how many atoms are in 10 g of NaCl
Molar mass NaCl = Na mass + Cl mass
23 + 35.45 = 58.45 g/m
10 g . 1 / 58.45 mol/g . NA/ 1 mol = 3.42x10²⁰ atoms
NA = Avogadro number
Answer:
A. Frictional
Explanation:
Friction is the force created when two solid objects in contact try to move past each other.
