Which is true about the effusion rates of helium and sulphur dioxide when the molar mass of helium is 4 grams/mole and the molar mass of sulphur dioxide is 64 grams?

sulphur dioxide effuses 4 times faster than helium.

sulphur dioxide effuses 0.25 times faster than helium.

helium effuses 0.25 times faster than sulphur dioxide.

helium effuses 4 times faster than sulphur dioxide.

molar mass is not related to effusion.

3.09 lab: reaction of metals 1 which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.