The mass of one atom of hydrogen is 1.008 amu. Calculate the mass of 26 atoms of hydrogen.

The mass of one atom of hydrogen is 1.008 amu. Calculate the mass of 2

1.	The mass of one atom of hydrogen is 1.008 amu. Calculate the mass of 26 atoms of hydrogen.
Answer» Solution :The mass of ONE atom of hydrogen = 1.008 amu `therefore`The mass of 26 atoms of hydrogen would be `= 1.008 xx 26 = 26.208 = 26.21` amu In this calculation, the least PRECISE number is 1.008 which CONSISTS of four significant figures. 26 is an exact number and MAY be supposed to have INFINITE number of significant figures. Therefore, the final result is reported upto four significant figures only.