Final answer:
The mass of a single bromine atom (1.327*10^-22g) is equivalent to about 79.64 amu. This is close to the exact masses of bromine's natural isotopes and is used to calculate the average atomic mass of bromine.
Step-by-step explanation:
The mass of a single bromine atom is given as 1.327*10^-22g. This mass is equivalent to the atomic mass unit (amu), which is the standard unit for indicating mass on an atomic or molecular scale. Because 1 amu is exactly 1.67 x 10^-24g, we can convert the given mass of a bromine atom to amu. We can divide the mass of the bromine atom in grams by the mass of one amu in grams to find the mass of a bromine atom in amu.
To calculate the mass in amu:
- Divide the given mass of the bromine atom by the mass of 1 amu: (1.327*10^-22g) / (1.67 x 10^-24g/amu)
- Calculate to get approximately 79.64 amu.
This value is comparable to the exact masses of the two naturally occurring isotopes of bromine (78.9183 amu for 79Br and 80.9163 amu for 81Br). The average atomic mass of bromine is based on these two isotopes and their relative abundances.