Asolution with a hydroxide ion concentration of 4.15 × 10-6 m is and has a hydrogen ion concentration of acidic, 2.41 × 10-8 m basic, 2.41 × 10-9 m basic, 2.41 × 10-8 m acidic, 2.41 × 10-9 m

What is the temperature of one mole of helium gas at stp?

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

The molar mass of nickel(ni) is 58.7 g/mol. how many moles are in an 88 gram sample of nickel?