Question

A sample of aluminium has a mass of 6.3g, calculate 1.the number of mole of aluminium present.2.the number of atoms of aluminium take(AL=27)
1. moles = mass / atomic mass = 6.3 / 27

2. atoms = moles * Avogadro's number = moles * 6.02E23
The correct answer
Mole =mass/molar mass=6.3/13
Mass/molar mass =6.3/13
answer
1.0.233
2.1.40266-10^23
Mole of Al present=0.233
GLAIIE
mole present = 0.23
0.23mole

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