When electricity is passed through molten potassium bromide, two simpler substances, potassium and bromine, are produced. Therefore, potassium bromide
A. cannot be an element.
B. must be a mixture.
C. has less mass than the resulting potassium and bromine do.
D. must have the formula PB.
Answer:A
When electricity is passed through molten potassium bromide, two simpler substances, potassium and bromine, are produced. Therefore, potassium bromide
A. cannot be an element. B. must be a mixture. C. has less mass than the resulting potassium and bromine do. D. must have the formula PB.