How to figure out the normality/equivalent weight/equivalents of chemicals in a balanced equation (assuming necessary data given)

Which step in naming unsaturated hydrocarbons is used for alkenes but not alkynes

In which phase(s) do the molecules take the shape of the container?

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