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SCAN0028

# SCAN0028 - From CHEM 1211 Conversion Factors 1 ms =10'3s...

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Unformatted text preview: From CHEM 1211 Conversion Factors 1 ms =10'3s 1us =10'Gs 1pm =10'12m 1cm =1O'2 m 1. What is 60 seconds in ms, in microseconds? (07‘ IO“ (gxloj 11.73 x ld'?’ = 60000 ms = 6X104 ms 2. What is 172 pm in cm? lms 0'3 s 60 seconds x lus 104 = 60000000 us = 6x107us S 60 sec onds x 10‘”m cm l72pm x x ‘2 = 172x10"lo cm = 1.72x10'8 cm 1pm 10 m 1. How many significant figures does this number have? 30505 a) 1 b) 2 c) 3 d) 4 C93 5 2. Put the following number in scientiﬁc notation and use the correct number of significant ﬁgures: 0.9;}050 a) 3.05 x 102-3050 x 10'2 c) 3.05 x10'2 d) 0.3050 x10"1 e) 3.1 x 10'2 3. What is the mass of 501 mL of tin, if the density of tin is 7.30 g/mL? 50in y 7.609, z. sigma «>1— 4. Do the following calculation on your calculator: 3.33 x 10“1 x 85011 = Report the correct signiﬁcant ﬁgures and write it in scientiﬁc notation. This is to see if you know how to use the EE or EXP button on your calculator. 39.3 5. What is the sum to the correct signiﬁcant ﬁgures: 0.12 + 1.145 = l , a 6. What is the product to the correct signiﬁcant ﬁgures: 0.12 x 1.145 = 0 1L1 2 2 7. Do the following calculation on your calculator: W: 4.56x10'Z x 3.31x105 ...
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