<p>The heat of combustion of rhombic and monoclinic sulphur are 70.96 and 71.03 kcal. The heat of tranistion of&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>S</mi><mrow><mi>R</mi><mo>&#8594;</mo><mi>M</mi></mrow></msub></math>&nbsp;is:</p>