A thermometer is filled with 8 mL of mercury. The mercury inside the thermometer has a mass of 108.8 grams. What is the density of mercury?

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

Which best describes the activation energy of a chemical reaction? a. the combined energy of all the reactants b. the amount of energy required for a reaction to occur c. the difference in energy between products and reactants d. the potential energy stored in the bonds of reactants and products

Which of the following is described by the equation h2o(s)+ heat=h2o(i) a freezing melting condensing evaporating