How many liters of oxygen will react with 45 grams of iron?
4 Fe + 3 02 --> 2 Fe2O3

show work, someone PLEASE anyone, it’s for a stoichiometry test

What type of reaction is zn + cucl2 → cu + zncl2?

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 could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?