Engineering, 17.04.2020 15:50 kobz

Using the equation below, suppose the pipette you used to fill a flask had a 10% random error in the amount delivered with each click. Use the equation below to calculate the percentage error in the total volume delivered to the flask using the number of clicks you were permitted to make. The equation is: random error of average = (error in one measurement) / n^1/2You're given the random error of average (1%) and the error in one measurement (5%), so you just need to solve for n, your unknown. To solve for n, you have to get it to one side by itself. The best way to do this is to cross-multiply. So you have:random error of average = error in one measurement 1 n^1/2Now when you cross-multiply, you get:(random error of average) x (n^1/2) = error in one measurement x 1We still need to get n to one side by itself. Right now it's multiplied by the random error of average. To get rid of it, we can divide by the random error of average. Anything divided by itself is equal to 1. Whatever we do on one side, we have to do to the other side. So we divide both sides by the random error of average to get:n^1/2 = error in one measurement / random error of averageNow to get rid of the exponent of 1/2, we just multiply it by the exponent of 2. But remember that we have to do this to both sides of the equation.

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