S8 + 12O2 8SO2 In the chemical equation above, the large numbers in front of O2 represent —

A. the amount of energy in that substance

B. numbers divisible by the subscript

C. the number of molecules of that substance in the reaction

D. the number atoms of each element in the molecule

Iron reacts with oxygen to produce iron oxide (rust). this reaction is represented in an equation as 4fe + xo2 → 2fe2o3. identify the value of x that will balance the equation.

Which of the following is a way that minerals are used? a. industry construction technology d. all of the above

Check all that apply diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? 1.the shells make up the diatomaceous earth used in filters 2.it can be used as an ingredient in abrasives 3.they are used in food products 4.the shells can be used in some insulating materials