Calculate the volume of concentrated acid with density 1.84 g/cm' containing 98% H2SO4 by mass that must be diluted with distilled water to prepare 100cm' acid of 20%
H2SO4 with density 1.14 g/cm3

What semimetal can form four single covalent bonds.

Amount of liquid measured in l or lm

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.)