Addition of 1 M HBr to 0.1 M solutions of which
compound results in evolution of a colorless gas?
(A) NaHSO3 (B) NaHSO4
(C) Ce(NH4)2(NO3)6 (D) KBrO3

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car