What is the Empirical Formula (EF) of the compound that is 25.9% nitrogen and 74.1% oxygen? (In other words, for NxOy, solve for x and y)
Removed: 85,86d85
Empirical Formula Notes
Definition:
What does it mean?
When do you have empirical formula:
Step to Calculate Empirical Formula
1. Change mass percent (%) to actual masses or use given masses directly
Assume 100.g compound (cpd)
2. Change mass of element to mole of element
3. Change moles to molar ratio.
Take smaller mole number and divide this number into all other mole number.
4. If all numbers are not whole, you need to determine a single number that you can multiple to all mole numbers so that the resultant number are ALL WHOLE.
Need to determine which number. The key is the following decimal to fraction conversion.
1/6 (0.167)
1/5 (0.200)
1/4 (0.250)
1/3 (0.333)
2/5 (0.400)
1/2 (0.500)
3/5 (0.600)
2/3 (0.666)
3/4 (0.750)
4/5 (0.800)
5/6 (0.830)
Example from board
What is the Empirical Formula (EF) of the compound that is 25.9% nitrogen and 74.1% oxygen? (In other words, for NxOy, solve for x and y)