The atomic mass of an element is 50
(i) Calculate the mass of one atom, in amu
(ii) Calculate the mass of `6.022xx10^(23)` atoms, in gm
(iii) Calculate the number of atoms in its 10 gm
(iv) What mass of the element contains `3.011xx10^(20)` atoms

Explanation

(i) 50 amu `" "` (ii) 50 gm
(iii) `because` 50 gm of element contains `6.022xx10^(23)` atoms
`therefore ` 10 gm of element will contain `(6.022xx10^(23))/(50)xx10=1.2044xx10^(22)` atoms
(iv) `because 6.022xx10^(23)` atoms weighs 50 gm
`therefore 3.011xx10^(20)` atoms weighs `(50)/(6.022xx10^(23))xx3.011xx10^(20)=0.025` gm