You have 200 g of a substance with a molar mass of 150 g/mol. how many moles of the substance do you have?

What provides structure to the human body?

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 is the empirical formula for c4h8o2