In this reaction of methane, CH4, 1664k) of energy are taken in , per mole of methane H
H-C-H (g)
--> C (S)
+ 4H (9)
H
Note that no bonds are formed in this reaction.
a) Why is this reaction endothermic?

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

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.

How does a noncompetitive inhibitor reduce an enzyme’s activity?