What is a substance?
a a uniform mixture that can’t be separated
b a mixture that can be separated
ca single component that can’t be separated
d a single component that can be separated

Write a net ionic equation to show that hydrofluoric acid, behaves as an acid in water.

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

What reaction is taking place? 02 + c3h8 = h20 + co2