Answer:
The answer is 2.54g
To find the mass we must first find the number of moles we use the Formula ;
N = n × L
where
N is the number of entities
n is the number of moles
L is the Avogadro's constant which is
6.023 × 10^23
n = N / L
N = 4.5 x 10^22 molecules
n = 4.5 x 10^22 / 6.023 × 10^23
n = 0.0747 moles
Molar mass = mass / number of moles
Molar mass of H2O2 = (2 × 1) + (16 × 2)
= 2 + 32
= 34g/mol
mass = molar mass × number of moles
= 34 × 0.0747
= 2.5398
= 2.54g
Hope this helps
