no of atoms in 5.40 grams of boron
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to calculate the no of atoms in boron ...we have to divide the given mass of boron by its actual amu atomic mass and then multiply it by avrogadro's number...that is ,
GIVEN MASS OF BORON/AMU ATOMIC MASS OF BORON x AVROGADRO NUMBER
5.40/10.80 x 6.022x10 to the power 23
so we get
1/2 x 6.022x10 to the power 23
HENCE THERE ARE 3.022 X 10 to the power 23 ATOMS
GIVEN MASS OF BORON/AMU ATOMIC MASS OF BORON x AVROGADRO NUMBER
5.40/10.80 x 6.022x10 to the power 23
so we get
1/2 x 6.022x10 to the power 23
HENCE THERE ARE 3.022 X 10 to the power 23 ATOMS
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