Iron pyrite, FeS2, reacts with O2 according to the following reaction: 4 FeS2(s) + 11 O2(g) ® 2 Fe2O3(s) + 8 SO2(g)
a) Calculate the mass of Fe2O3 that is produced from the reaction of 75.0 L of
O2(g) at 2.33 atm and 150.0oC with an excess of FeS2.

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

What is the percentage of hydrogen in c2h4

The characteristics 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 an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.