What is the overall cell potential for this redox reaction?
ba + ca2+ → ba2+ + ca

given: ba2+ + 2e− → ba(s) = –2.90 and ca2+ + 2e− → ca(s) = –2.87

The boiling point of liquids is very high what does it indicate

Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?

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.)