PLZ HELP AND HURRY WILL MARK BRAINLIST IF U SHOW WORK When enough energy is present, water will decompose into hydrogen and oxygen gases according to the following reaction:

2 H2O → 2H2 + O2

What mass of water, in grams, must react to produce 25 g of O2?
The molar mass of water is 18.01 g/mol
The molar mass of oxygen is 32.00 g/mol

Show all steps in the solution of this question, including proper units, for full credit !!

Consider the following unbalanced equation for the combustion of hexane: αc6h14(g)+βo2(g)→γco2(g)+δh2o(g) part a balance the equation. give your answer as an ordered set of numbers α, β, γ, use the least possible integers for the coefficients. α α , β, γ, δ = nothing request answer part b determine how many moles of o2 are required to react completely with 5.6 moles c6h14. express your answer using two significant figures. n n = nothing mol request answer provide feedback