Answer:
Mass of KOH = 497.78 g
Explanation:
Given data
mass of KOH = ?
number of KOH molecules = 5.34 × 10²⁴
molar mass of KOH = 56.12 g/mol
Solution
1st we find out the number of moles of KOH
number of moles = number of molecules given / Avogadro number
number of moles of KOH = 5.34 × 10²⁴ / 6.022 × 10²³
number of moles of KOH = 8.87 mol
Now we find out the mass of KOH
Mass of KOH = moles × molar mass
Mass of KOH = 8.87 mol × 56.12 g/mol
Mass of KOH = 497.78 g
