What is the hsol for kbr k+ + br- ? the lattice energy is –679 kj, the enthalpy of hydration for is –336 kj/mol, and the enthalpy of hydration for is –284 kj/mol. use hsol = –hlat + hhydr. –627 kj/mol –59 kj/mol 59 kj/mol 1,299 kj/mol

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.)

The table describes how some substances were formed substance 19 description formed by boiling pure water formed by combining three hydrogen atoms to every nitrogen atom formed by adding 5 g of sugar to 1 l of water formed by compressing carbon under high pressure based on the given descriptions, which substance is most likely a mixture?

What is the standard unit of measure for acceleration?