57-SF-Problems

# 57-SF-Problems - GCHEM I SIG/FIG CONCEPT PROBLEMS Before...

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GCHEM I SIG/FIG CONCEPT PROBLEMS Before performing the calculations of a problem, determine the number of sig/figs in all given data, imported data, and constants. Based on this determination, estimate the number of sig/figs that will be in your final answer (least precise data or constant). While performing the calculation always carry one digit more than the number of sig/figs that will be in your final answer to accommodate rounding. Round final answer ONLY !!! Underline a “number” in the problem that will determine number of sig/figs in final answer. 1. A brass cylinder is 4.668 inches long. If 1.00 inch equals 2.5 centimeters, how long is the brass cylinder in centimeters ? extra digit for rounding Gross Answer = 11.6 S/Fs 2 Answer: __________12 __________ 2. Average the following mass values of a copper wire: 12 grams; 12.2 grams;14.23 grams Gross Answer = ____________ S/Fs Answer: ______________________ 3. What is the mass of a NaCl sample in a beaker if the mass of the beaker is 35.724 grams and mass
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