20 the relative formula mass, mr, of copper(ii) sulfate, cuso4, is 160. Which mass of sulfur is present in 160g of copper(ii) sulfate?.

Three alkali metals in group 1 are a. calcium, strontium, barium b. boron, aluminum, gallium c. sodium, potassium, rubidium d. fluorine, iodine, chlorine

Identify two types of chemical bonding in the source of dietary potassium

What is the main reason why some developing countries fear the increase the free trade policies around the world?