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Two numbers, a and b, are such that a>b. Their sum is 49. Write an equation to represent this information. Would it still be a+b=49? Can a particle projector be a good science fiction weapon? Chemistry Question Calculate the mass of Fe(NH4)2(SO4)2.6H2) required to prepare 25ml of 1.0M Fe(NH4)2(SO4)2? Why are we still classed a homosapien sapiens when we have physically changed so much from the first sapiens? Find the root of the function y=2.5sin(x/2 +1) between x=5 &-5?