What is the rate of disappearance of O2 if the rate of appearance of CO2 is 0.450 M/s? C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(g)

It's a

257 grams h2o i think

Hello thereone of the following properties was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version. which property fits this description? answer: atomic mass  was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.