a) (4) How many joules are there in 100.0 Cal of energy? b) (3) 250 joules of energy is equivalent to how many calories? c) (8) Silicon reacts with chlorine gas to produce silicon dichloride and 425 kJ of energy. Write a thermochemical equation for the reaction. Is the reaction endothermic or exothermic? Why? d) (4) How much energy would be transferred if 75.0 g of chlorine gas reacted during the reaction in Part C. e) (8) Iron (II) oxide reacts with carbon monoxide in the presence of 67.2 kJ of energy and produces carbon dioxide and iron. Write a thermochemical equation for the reaction. Is the reaction endothermic or exothermic? Why? f) (4) What mass of carbon monoxide reacted is 547 kJ of energy is available for the reaction in Part E?​