Which statement accurately describes the chemical symbol of an element?The element copper has 29 protons. What is the atomic number of copper?

Identify a specific example for each type of technology

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

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.