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  1. sharyar anwer

    CIE May/June 2015 resources updated.

    Calculate the standard enthalpy change of formation of CS2 from the following data. Include a sign in your answer. standard enthalpy change of combustion of CS2 = –1110 kJ mol–1 standard enthalpy change of formation of CO2 = –395 kJ mol–1 standard enthalpy change of formation of SO2 = –298 kJ mol
  2. sharyar anwer

    Mathematics: Post your doubts here!

    9 (a) The first term of an arithmetic progression is −2222 and the common difference is 17. Find the value of the first positive term. [3] (b) The first term of a geometric progression is ï3 and the second term is 2 cos 1, where 0 < 1 < 0. Find the set of values of 1 for which the progression is...
  3. sharyar anwer

    Mathematics: Post your doubts here!

    9 (a) The first term of an arithmetic progression is −2222 and the common difference is 17. Find the value of the first positive term. [3] (b) The first term of a geometric progression is ï3 and the second term is 2 cos 1, where 0 < 1 < 0. Find the set of values of 1 for which the progression...
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