Answer: So, there are approximately 1.626 moles of N₂ and 1.197 moles of F₂ in 45.5 g of each gas.
Step-by-step explanation:To find the number of moles in a given mass of a substance, you can use the formula:
moles = mass / molar mass
1. First, find the molar mass of N₂ (nitrogen gas) and F₂ (fluorine gas).
- The molar mass of N₂ is 14.01 g/mol (since nitrogen has an atomic mass of 14.01 g/mol and there are two nitrogen atoms in N₂).
- The molar mass of F₂ is 38.00 g/mol (since fluorine has an atomic mass of 19.00 g/mol and there are two fluorine atoms in F₂).
2. Now, calculate the number of moles for each gas:
- For N₂: moles = 45.5 g / 28.02 g/mol = 1.626 mol (rounded to three decimal places)
- For F₂: moles = 45.5 g / 38.00 g/mol = 1.197 mol (rounded to three decimal places)