What is the formula for potassium fluoride?

Which statement describes both homogeneous mixtures and heterogeneous mixtures?

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat

Label a-f based on the table using c for concentrated and d for dilute