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How to calculate the time a torsion spring deflects when a force is applied? I need the formula but cant find it anyway.? Given the reaction 2KCl + Pb(NO3)2 = PbCl2 + 2KNO3, what mass of Pb(NO3)2 is required to react with 1.25 L of 0.55 M KCl? PLEASE HELP PLEASE PLEASE
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QUESTION IN PICTURE? Help :( plss? How much dirt is in a 3 foot square hole?