This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
ScanSolve AI Answer
Here's the solution based on the parameters provided in the image. The question "NE?" is interpreted as asking for the number of moles (N) of the substance deposited. Given Parameters from the image: Time (t) = 400 s Current (I) = 3 A Valency (z) = 2 (This is the number of electrons per mole of substance) Faraday's constant (F) = 96500 C/mol Relative Atomic Mass (RAM) = 119 g/mol (This parameter is not needed to calculate N using the current and time, but would be used if calculating mass deposited). Formula to calculate moles (N) from current and time: N = (I × t)/(z × F) Step 1: Substitute the given values into the formula. N = 3 A × 400 s2 × 96500 C/mol Step 2: Perform the multiplication in the numerator. N = 1200 C2 × 96500 C/mol Step 3: Perform the multiplication in the denominator. N = 1200 C193000 C/mol Step 4: Calculate the final value for N. N ≈ 0.0062176 mol Rounding to a reasonable number of significant figures (e.g., three, based on the input values): N ≈ 0.00622 mol The number of moles (N) of the substance deposited is 0.00622 mol.