what is the thermodynamic product obtained from the addition of 1 equivalent of hbr to 1,3-butadiene?

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.)

Compare and contrast refraction of light and sound will give brainliest

Which of the following units is not an official si unit