Answer:
#6 8.67x10²⁴ atoms
#7
1. Atom
2. Formula unit
3. Molecule
4. Ion
Explanation:
#6 First we calculate how many carbon moles are there in 7.00 moles of C₂F₂, keeping in mind that there are 2 C moles per C₂F₂ mol:
- 7.00 mol C₂F₂ * 2 = 14.00 mol C
As for carbon dioxide, there are 0.400 C moles in 0.400 moles of CO₂.
We calculate the total number of C moles:
- 14.00 mol + 0.400 mol = 14.4 mol C
Finally we calculate the number of atoms in 14.4 C moles, using Avogadro's number:
- 14.4 mol * 6.023x10²³ atoms/mol = 8.67x10²⁴ atoms
#7
- 2. Formula unit (It is a crystalline solid, BaBr₂)
- 4. Ion (It has a formal charge, +2)
