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If (1/x)+(2/y)+(3/z)=1, then z=(axy/bxy-2x-cy), where a,b, and c are positive integers. Find the value of a+b+c.? 2. Find the composites f º g and g º f where f : R →R given by f(x) = x2 + 1 and g : R → R given by g(x) = x + 2.? How many grams of NH3 can be produced from 2.13 mol of N2 and excess H2 And How many molecules of NH3 are produced from 8.60×10^4 g of H2? Calculate ΔE, if a system releases 66.9 kJ of heat to its surroundings while the surroundings do 44.0 kJ of work on the system.? Which way does the sun appear?