Science / Chemistry / Boiling Point: The temperature at which the vapor pressure of a liquid would be equal to the external pressure on the liquid. The standard boiling point is the temperature at which the vapor pressure of a liquid equ MORE
Science / Chemistry / Boiling Point Elevation: The boiling point of a solution is higher than the boiling point of the pure solvent. Boiling point elevation is a colligative property. MORE
Science / Periodic Table of Elements / Niobium (Nb): Atomic number: 41, Atomic mass: 92.91 g.mol -1, Electronegativity: unknown, Density: 8.4 g.cm-3 at 20?°C, Melting point: 2410 ?°C, Boiling point: 5100 ?°C, Vanderwaals radius: 0.143 nm, Ionic radiu MORE
Science / Periodic Table of Elements / Rhenium (Re): Atomic number: 75, Atomic mass: 186.23 g.mol -1, Electronegativity: 1.9, Density: 20.5 g.cm-3 at 20?°C, Melting point: 3170 ?°C, Boiling point: 5627 ?°C, Vanderwaals radius: 0.138 nm, Ionic radius: MORE
Science / Periodic Table of Elements / Nitrogen (N): Atomic number: 7, Atomic mass: 14.0067 g.mol -1, Electronegativity: 3.0, Density: 1.25*10-3 g.cm-3 at 20?°C, Melting point: -210 ?°C, Boiling point: -195.8 ?°C, Vanderwaals radius: 0.092 nm, Ionic MORE
Science / Periodic Table of Elements / Lithium (Li): Atomic number: 3, Atomic mass: 6.941 g.mol -1, Electronegativity: 1.0, Density: 0.53 g.cm -3 at 20 ?°C, Melting point: 180.5 ?°C, Boiling point: 1342 ?°C, Vanderwaals radius: 0.145 nm, Ionic radius MORE