41 . A . energy can neither be created nor destroyed 42 . C . The difference between the energies of the product and reactants 43. B. enthalpy 44. B. endothermic 45. C .Enthalpy 46. C .electrons 47. C. Always negative 48. C. transfer of electrons 49. B. siemens 50. B.reduction occurs
41 . A . energy can neither be created nor destroyed
42 . C . The difference between the energies of the product and reactants
43. B. enthalpy
44. B. endothermic
45. C .Enthalpy
46. C .electrons
47. C. Always negative
48. C. transfer of electrons
49. B. siemens
50. B.reduction occurs
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