The density of lithium is 5.34 * 10^2 Kg/m^3. Convert to g/m^3

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 subscript for oxygen in its molecular formula

The number at the end of an isotope’s name is the number.