Cual es la cantidad de sulfato de hierro(ll) FeSO4 y la cantidad de agua que se requiere para preparar 300g de una disolución al 6% m/m?

Water (2510 g ) is heated until it just begins to boil. if the water absorbs 5.09×105 j of heat in the process, what was the initial temperature of the water?

If blood contains 150g of hemoglobin per liter of blood, how much hemoglobin would be contained in 10 ml of blood

What is a number added in front of a formula in order to balance the equation