Consider the combustion of ethylene, c2h4(g)+3o2(g)→2co2(g)+2h2o(g). if the concentration of c2h4 is decreasing at the rate of 3.8×10−2 m/s , what is the rate of change in the concentration of co2? express your answer using two significant figures. δ[co2]/δt δ [ c o 2 ] / δ t = nothing m/s

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