chem hw 2b
how is the average for a set of values calculated
trial 1 + trial 2 + trial 3 ------------------------= average 3 (= # of trials)
a student measures the mass of a sample as 9.67g. calculate the percentage error, given that the correct mass is 9.82 g
.153%
subtract 7.11 cm from 8.2 cm
1.09
what is the product of 0.8102 m and 3.44 m
2.787088
how many significant figures are in each of the following measurements? A) 0.4004 mL b) 6000g c) 1.000 30 km d) 400. mm
4 4 5 3
calculate the sum of 6. 078 g and .3329 g
6.4109
a) 67.029 g to three significant figures b) .15 L to one significant figure c) 52.8005 mg to 5 significant figures d) 3.174 97 mol to three significant figures
67.029 g .2 L 52.8005 mg 3.175 mol
divide 94.20 g by 3.167 22 ml
94.20
write the equation used to calculate percentage error
absolute error |experimental value - theoretical| ----------------- x 100 theoretical value