Problem #4: A mixture of NaCl and NaBr weighing 1.234 g chlorine gas,
which converts the mixture completely to NaCl. The total mass of
NaCl is now 1.129 g. What are the mass percentages of NaCl and NaBr in the
original sample?

The reaction will shift to the right

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).

I'm not sur i'm sorry

The answer is january : )