GCHEM I WRITTEN SIG/FIG CONCEPT PROBLEM ANSWERSBefore performing thw calculation of a problem, determine the number of sig/figs in allgiven data, imported data, and constants. Based on the determination, estimate thenumber 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/fig thatwill be in your final answer to accommodate rounding. Round final answer ONLY !!!(Underline “number” in problem that will determine the number of sig/figs in the answer)1. A brass cylinder is 4.668 inches long. If 1.00 inch equals 2.5centimeters, how long is the brasscylinder in centimeters ?Gross Answer = ____11.67___ S/Fs = __2___Answer: _________12__________2. Average the following mass values of copper wire: 12 grams; 12.2 grams;14.23 gramsGross Answer = ____________ S/Fs = ______ Answer: _____________________3.What is the mass of a NaCl sample on a watch glass if the mass of the watch glass is 35.724 grams and mass of watch glass and NaCl is 45.67grams ?Gross Answer = ____9.946____ S/Fs* = ___2__ Answer: ______9.95 grams_____4. What is the calorimeter temperature change (Δ T) during an exothermic chemical reaction if the
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