1. A compound has 45 g of iron, 6 g of oxygen, and 3 g of sulfur. Find the percent of each element. 2. A compound has 3 g of sodium, and 5 g of bromide. Find the percent of each

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?

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

How can one make a supersaturated solution? (apex)