On analysing the crystals, the student found that one mole of the hydrated iron(II) sulfate crystals, FeSO -xH20, had a mass of 278g.
Determine the value of x using the following steps:
calculate the mass of one mole of Feso,
mass=
g

Why is it important for scientists to review and repeat the work of other scientists? 1.a scientific theory must be tested three times before it is proven. 2.the scientific method only applies to repeated experiments. 3.an experiment may have had errors that the scientists didn't recognize. 4.the results of individual scientists may be influenced by bias. 5.an experiment must be performed twice before the data can be analyzed.