physical and chemical properties of methane
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Methane is lighter than air, having a specific gravity of 0.554. It is only slightly soluble in water. It burns readily in air, forming carbon dioxide and water vapour; the flame
is pale, slightly luminous, and very hot. The boiling point of methane is −162 °C (−259.6 °F) and the melting point is −182.5 °C (−296.5 °F).
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Methane has the chemical formula of CH4 and a molecular weight of 16.043 g/mol.
The methane molecule is tetrahedral, with the carbon atom at the center and the four hydrogen atoms on the corners of the tetrahedron. Each C-H bond is equivalent, and each bond is separated by an angle of 109.5°.
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