Astatine should have a melting point of about 300°C and a boiling point of about 340°C. This means that it will be solid at room temperature as room temperature is 20°C
You need to first write a chemical equation and balance it C₄H₁₀ + O₂ → CO₂ + H₂O 2 C₄H₁₀ + 13 O₂ → 8 CO₂ + 10 H₂O 1.0 moles X moles 1.0 mol C₄H₁₀ () = 4 moles of CO₂