When fe(no3)2(aq) and na2s(aq) are mixed, what is the black coloured precipitate that forms?

What is the percentage by mass of silicon (si) in iron aluminum silicate (fe3al2(sio4)3)?

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

What is a metal replacement reaction