What is the mass of the H2O2and iron(III) nitrate assuming they’re mostly water and the density of water is 1g/mL?

The first element on the periodic table of elements is carbon. a. true b. false

What does the process of natural selection involve

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.