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A student calculates the acceleration due to gravity and determine it to be 9.72 m/s2. What is his percent error, if the accepted value is 9.81 m/s2? Q. You estimate that the maximum error of an equal-arm balance is 0.01 g. What is the possible percent error when you use this balance to calculate each of the following masses?
(a) 700 g
(b) 3 kg
(c) 20 g
(d) 1.0 g
The mass of a mol of proton and electron is: (1) 6.023x 10 23 g (2) 1.008g and 0.55mg (3) 9.1x 10 -28 kg (4) 2gm Ans: (2) 1.008g and 0.55mg
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