Rust is an iron oxide and formed by the reaction of iron and oxygen in the presence of moisture. So the answer would be C
Answer:
specialized if you add one more I cause I'm pretty sure there is supposed to be one more i.
The way you calculate the empirical formula is to firstly assume 100g. To find each elements moles you take each elements percentage listed, times it by one mole and divide it by its atomic mass. (ex: moles of K =55.3g x 1 mole/39.1g, therefore there is 1.41432225 moles of Potassium) Once you’ve completed this for every element you list each elements symbol beside it’s number of moles and divide by the smallest number because it can only go into its self once. After you’ve done this, you’ve found your empirical formula, which is the simplest whole number ratio of atoms in a compound. I’ve added an example of a empirical question I completed last semester :)
Answer: FeF3 Iron(III) fluoride
Explanation: 5.6 g = 1/10 mole Fe
11.3-5.6g F = 5.7 = 3/10 mole F
Answer:
9.2 L is the average volume should the chemical engineer report.
Explanation:
Volume of pollutant from Cross creek plants 10.88 L
Volume of pollutant from Oglala plants = 0.92 L
Volume of pollutant from Platte plants = 15.82 L
Average volume pollutants will be given by :

9.2 L is the average volume should the chemical engineer report.