How many moles of CaBr2 are needed to prepare 2.90 L of a 0.50 M solution

If a reaction has g of -136kj at 110°c, will it be spontaneous at this temperature (110°c)? yes or no

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)