Calculate the empirical formula of a compound containing 77.7% Iron and 22.3% of oxygen.
An empirical formula is the simplest whole number ratio of atoms of each element present in the compound.1) Divide by atomic relative mass to find the number of moles. 2) Find a ratio between the moles. 3) Divide the ratios by smallest number. 4) Obtain the number of atoms.1:1 ratio, therefore FeO.
JS
Related Chemistry A Level answers
All answers ▸Describe how you could form ethyl ethanoate using only ethanol as the starting material. Include all relevant reagents and conditions.
Explain the trend in boiling points between HF, HCl and HBr.
State the qualitative tests to distinguish between halide ions in solution.
What reaction occurs when benzene is mixed with equal amounts of sulphuric and nitric acid?