5. sino ang naghain ng teoryang nabuo ang kalupaan ng daigdig mula sa isang supercontinent?

May someone me with these science questions

Answer asap need it by wednesday morning calculate the ph of 0.02m hcl best answer will be brainliest

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