Experiment 1 Measurement and Density 1. Why should weighing data or any other me

Question

Experiment 1 Measurement and Density 1. Why should weighing data or any other measurement data be recorded immediately in your laboratory manual and not on a scrap of paper? 2. An object was carefully weighed five times on a multiple-beam balance. The balance was zeroed each time. The masses were: 11.36 g; 11.37 g: 11.40 g: 11.38 g; and 11.39 g a. Calculate the average value of these measurements. (Please show all work.) average b. Calculate the standard deviation, s.d., of this set of measurements using the range of e data and the square root of the number of measurements averaged. (Please show all work.) s.d. 3. Calculate the density of a solid if it has a mass of 8.47 g and a volume of 3.24 cm Please show your calculations, with units, below. density (The Preliminary Exercises continue on the following page

Explanation / Answer

As you have not mentioned,I am giving you the answer of the first question only.

1.For a factful representation of your actual result,it is required to note your data immediately in notebook.

It is human tendency to approach the ideal theoretical value and sometime we end up manipulating the data.There is also possibility to forget the data,if you produce them in a huge number.

Also,for the calculation of several quantities,you need to introduce the correction factor in calculation, which actually measures the degree of variation in your produced data,when compared to theoretical values.

For such several reasons,you need to note the data immediately.

Hope,this serves you well.

Best Wishes

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