ΔS∘rxn is 25.0 J/K . What is the standard Gibbs free energy of the reaction, ΔG∘rxn? 2A+B⇌2C+2D where the heats of formation are given in the following table: Substance ΔH∘f (kJ/mol) A -271 B -411 C 183 D -511

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

For each of the following compounds, decide whether the compound's solubility in aqueous solution changes with ph. if the solubility does change, pick the ph at which you'd expect the highest solubility. you'll find ksp data in the aleks data tab. compounds does solubility change with ph

How many moles of cu are needed to react with 5.8 moles of agno3? cu + 2 agno3 → cu(no3)2 + 2 ag