Ethylene glycol has a density of 1.11g/cm^3 what is the mass in grams of 417 ml of this liquid

Compare and contrast physical changes with chemical changes.

Answer asap : ( a. how does mucus prevent the entry of pathogens? b. describe two ways white blood cells protect us from pathogens.

Select the statement that describe chemical properties a. antacid tablets neutralize stomach acid b. helium is the lightest monatomic element c. water freezes at 0 celsius d. mercury is liquid at room temperature