If the total investment cost of a plant producing sugar is $1.2 million and the raw materials and other services are estimated as :
steam 207kg/hr at $2/kg of steam
cooling water 6500kg/hr at $2.5 per kg of water
electrical power 3500kwh/day(360mj at $1.5/kwh). and if plant attainment is 92%, calculate the annual operating cost

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ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.