Question

Using the experimental data provided, determine the mass of the recovered copper. Mass of copper wire Mass of filter paper 1.0251 g 0.8233 g Mass of filter paper plus recovered copper 1.9732 g Mass of recovered copper Give the answer using only decimal notation with the leading zero (if necessary) and the correct significant figures in the 1st blank and the correct unit abbreviation in the 2nd blank. Next Page Page 1 of 10

Can you guys explain the sig fig to me.

Answer 1

& significant figures • Any nou- zero number is significant . • Zeros b/w other significant numbers are significant • Zelos left of non-zero digit are not significant 0.00504 - 3 significant figures 000407 = 3 significant figures 004000 = 3 significant figures o for numbers greater than 1, all zews right of decimal places are significant . 4.000 4 significant figures • Trailing zexos are not significant unless decimal point | sci notation is used. 4200 = a significant figures 1 зор. ч sinificat {'мц 3.70 x 104 ) 3 significant figures M Addition or subtraction points, es nu Use lowest number of "places", decimal tens, hundreds etc. (least precise) 0.24 +0.345 = 0.59 4233 + 1500 =5733 0.2 you + 0.345 = 0.585 Multiplication and Division Use lowest figures. numbers of significant 23 X 436 = 10x104 453 = 140 3.2

- mass of filter paper ) mass Mass of recovered copper of filter paper recovered copper I = 1.9732 g - 0.82 33 g - - (Both values places, hence be in & are upto & decimal our answer should decimal places 1.1499 g Please Rate ...