Answer:
1286.8g
Step-by-step explanation:
Moles = mass ÷ Mr of compound
Rearrange this formula to find the mass in grams of I₂:
moles × Mr of compound = mass
moles = 5.07
We can find the Mr of I₂ by adding up the atomic masses of each element:
The atomic mass of I is 126.9, so the Mr of I₂:
126.9 + 126.9 = 253.8
Hence, the mass is:
5.07 × 253.8 = 1286.8g (to 1dp)