Prove Lavoisier's law (the law on mass maintenance) for the chemical reaction shown by the equation 4Al +3O2 > 2Al2O3​

After cloud droplets form, what must happen to them for precipitation to occur?

Match each statement with the state of matter it describes

Substance a is a nonpolar liquid and has only dispersion forces among its constituent particles. substance b is also a nonpolar liquid and has about the same magnitude of dispersion forces among its constituent particles. when substance a and b are combined, they spontaneously mix.