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What ecosystems are present in/on your body? How do they differ from others? How do I solve for x here: (2x+26)*(2x+18)*x=? I d love to see working out so I can understand the steps needed to solve this. Thanks!? The molar mass of salt is 82.0 g. What is the enthalpy change per mole of the salt? 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.? Where do astrophysical neutrinos come from?