A rectangular brass plate that measures 10.0 cm × 5.0 cm is plated on ONE side with nickel using a constant current of 2.50 A for 45.0 min. The nickel ions present are Ni²⁺. Relevant data: atomic mass of Ni = 58.7 g mol⁻¹; density of Ni = 8.90 g cm⁻³; Faraday constant = 9.65 × 10⁴ C mol⁻¹.
What is the average thickness of the nickel layer, expressed in micrometres (µm)?
a) 23μm
b) 9.2μm
c) 46μm
d) 92μm