A 5.71 g of an unknown metal sulfate with formula M2SO4, was dissolved in water and treated with excess aqueous barium nitrate, resulting in the precipitation of all the sulfate ions as barium sulfate. The precipitate was collected, dried, and found to weigh 3.68 g. Determine the atomic mass of M, and identify M

Which is a character of nuclear fusion but not nuclear fission

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.)

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.