Reaction of methane with oxygen really proceeds in two steps: CH4 + O2 → CO + 2H2O
CO + O2 → CO2
A sample of CH4 is burned in an excess of O2 to give 2.2 moles of H2O. How many moles of CH4 were in the original sample?

Iwould you figure it out but you don't have a picture or in your question as to what the physical property you're looking for is

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na

Hi; /c

No. an alpha particle is a pair of protons and a pair of neutrons, i.e. a helium