TY JOUR TI CALCULATION OF THERMAL EFFECTS OF CHEMICAL REACTIONS USING THE MICROSOFT EXCEL SOFTWARE KW thermodynamic calculation KW thermal reaction effect KW Microsoft Office software products KW Microsoft Excel spreadsheets JO Scientific Papers Collection of the Angarsk State Technical University AU Godunova, D.A. AU Fam, A.Z. AU Fomina, L.V. PY 2020 IS 2020 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»