`2.49 xx 10^(-18)g` of an element X contains `2.0 xx 10^(4)` atoms. What is the atomic mass of the element X ?

2.49 xx 10^-18 g of an element. A contains 2.0 xx 10^4 atoms. What is, the atomic mass of the element A?

10^(20) atoms of an element has a mass of 4 mg. What is the atomic mass of the element?

The mass of 3.2 xx 10^(5) atoms of an element is 8.0 xx 10^(-18) gm. The atomic mass of the element is about:

The mass of a single atom of an element X is 2.65 xx 10^(-23) g . What is its atomic mass ? What could this element be ?

The mass of one atom of an element is 1.71 xx 10^(-22) g. What is the atomic mass of this element in g-mol^(-1) ?

The mass of a single atom of an element M is 3.15 xx 10^(-23) g . What is its atomic mass ? What could the element be ?

Mass of 10 atoms of an element is 24xx10^(-23) gm, then atomic mass of that element is: