What is the density of aluminum chloride vapor (AICI3) at 498 K and 0.939 atm?

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

What are the major types of a chemical compound

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?