1. A calibration weight with a known mass of 25.000 g was weighed on two different balances with the following results: Trial # Balance 1 (g) Balance 2 (g) 1 25.007 25.06 25.005 25.07 3 25.008 25.04 (a) Calculate the mean and average deviation for each set of measurements on each balance. (b) Which balance is more precise? (c) Calculate the percent error for each set of measurements.

Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter1: Basic Concepts Of Chemistry
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Q.1 Please write legibly and box answers for sections a,b,c,d, thank you.
1. A calibration weight with a known mass of 25.000 g was weighed on two different balances with
the following results:
Trial #
Balance 1 (g)
Balance 2 (g)
1
25.007
25.005
25.06
25.07
3
25.008
25.04
(a) Calculate the mean and average deviation for each set of measurements on each balance.
(b) Which balance is more precise?
(c) Calculate the percent error for each set of measurements.
(d) Which set of measurements is more accurate?
Transcribed Image Text:1. A calibration weight with a known mass of 25.000 g was weighed on two different balances with the following results: Trial # Balance 1 (g) Balance 2 (g) 1 25.007 25.005 25.06 25.07 3 25.008 25.04 (a) Calculate the mean and average deviation for each set of measurements on each balance. (b) Which balance is more precise? (c) Calculate the percent error for each set of measurements. (d) Which set of measurements is more accurate?
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