units $ A atm C Cd cm Da eV g h Hz J K L M m min mmHg mol N Pa parsec s torr V W °aC °ΔC Å Ω ％ functions FtoKscale() moredigits() sqrt() tan() ln() quadp() sum() avg() sin() abs() quadn() CtoKscale() exp() uncertainty() cos() log() min() max() using in symbols ° μ ΔHf° ％ ν Δ ℎνλ ΔᵣG° ρ ∞ ΦΨ constants Speed of light Planck Avogadro Boltzmann Gas constant elem. charge Faraday