The half-life of

is 1.471 days. This isotope decays by the emission of a beta particle.
a. Gaseous HBr is made with Br-82. When the bromine isotope decays, the HBr produces H2 and the bromine decay product. Write a balanced equation for the decay of Br-82. Now, write a balanced equation for the decomposition of H82Br.
b. If a pure sample of 0.0150 mol of HBr made entirely with Br-82 is placed in an evacuated 1.00-L flask, how much HBr remains after 12.0 h? If the temperature is 22°C, what is the pressure in the flask?

Transcribed Image Text:

Br 82 35