The average atomic mass of hydrogen is _________amu .

Define average atomic mass

Define Average atomic mass ?

Calculate the average atomic mass of hydrogen using the following data : {:("Isotope","% Natural abudance mass","Atomic mass(amu)"),(.^(1)H," "99.985," "1),(.^(2)H," "0.015," "2):}

Naturally occuring boron has two isotopes of masses 10 amu and 11 amu. Calculate the percentage of each isotope if the average atomic mass of boron is 10.2 .

The unit of atomic mass amu is replaced by_________.