2:25:44 remain Complete the following converslons This Is set up sothatyou must

Question

2:25:44 remain Complete the following converslons This Is set up sothatyou must answer correctly according to the rules you know for signlficant figures. Read each question carefuly A. A box of books you Intend to donate has a mass of 17.3 kllograms. is this mass in mgr use scientific notation. reviw How many significant figures should be in your answer? B. How many signiticant rigures are in the number 0.0080? C. You measure a piece ef paper in lab. The he ght is 27.61 and the width is 30.6. What is the perimeter of the piece of paper? Ho w many significant tigures should you have reported your answer to? D. Yourlab partner measures the tempe ature of lab as 244C. What is this temperature in KeMin? How many declmal soaces should you have reported your answer to?

Explanation / Answer

A.

m = 17.3 kg

change to mg --> 1 kg = 10^-3 g, and 1 mg = 10^3 g

total conversion = 10^6 g

17.3 kg = 17.3*10^6 g = 1.73*10^7 g

b.

sig fig --> report 3 sig fig ( 1,7,and3)

B.

0.006 --> only 6 is significant

6*10^-3

c.

P = L + W = 27.61 + 30.68 = 58.29

keep 4 sig fig, since there are 4 sig fig i neach species

D)

T = 24.4 +273.15 = 297.55 --> kep 3, 298 K

since we need to keep only 3 sig fig, roundup the last sig fig

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