The weight of an atom is 7×10^-23 gm. Hence its atomic mass is 1) 42

1.	The weight of an atom is 7×10^-23 gm. Hence its atomic mass is 1) 42 amu 2) 42 g 3) 420 g 4) 420 amu
Answer» The MASS of one atom of an element A = 7×10⁻²³ gm We KNOW the 1 mole of an atom = 6.023 x 10²³ ATOMS 1 mole of an atom = its atomic mass Mass of one atom of an element A = is 7×10⁻²³ g g Mass of 6.023 x 1023 atoms of an element A = is 7×10⁻²³ g X6.023 x 10²³ = 42.16100 grams

The weight of an atom is 7×10^-23 gm. Hence its atomic mass is 1) 42 amu 2) 42 g 3) 420 g 4) 420 amu

Answer»

The MASS of one atom of an element A = 7×10⁻²³ gm

We KNOW the 1 mole of an atom = 6.023 x 10²³ ATOMS

1 mole of an atom = its atomic mass

Mass of one atom of an element A = is 7×10⁻²³ g g

Mass of 6.023 x 1023 atoms of an element A = is 7×10⁻²³ g X6.023 x 10²³

= 42.16100 grams