3 attempts left Check my work Be sure to answer all parts. The area of a telescope lens is 6.586 x 10 mnm (a) What is the area in square feet (ft)? Enter your answer in scientific notation. ft2 X 10 (b) If it takes a technician 45.1 s to polish 1.29 X 10 mm, how long does it take her to polish the entire lens? 2

3 attempts left Check my work Be sure to answer all parts. The area of a telescope lens is 6.586 x 10 mnm (a) What is the area in square feet (ft)? Enter your answer in scientific notation. ft2 X 10 (b) If it takes a technician 45.1 s to polish 1.29 X 10 mm, how long does it take her to polish the entire lens? 2

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Please answer questions 2&3
If the Mn of a batch of LDPE is 3.2x109 g/mol, what is the corresponding full contour length in Angstroms and in millimeters? How might the practical length differ between this batch of LDPE and a batch of HDPE with the same Mn? Explain and support your answer.
Pls do fast and i will rate instantly for sure Solution must be in typed form Please show work on these questions. I am having a hard time understanding these concepts.
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Honestly i'm really confused on even where to start? Do I need to use the density formula?
You have a stock solution certified by a manufacturer to contain 245.0 ± 0.4 µg SOź¯/mL. You would like to dilute it by a factor of 100 to obtain 2.450 µg/mL. Two possible methods of dilution are stated. For each method, calculate the resulting absolute uncertainty in concentration. Use the manufacturer's tolerances in the table for uncertainties. Glassware Tolerance 1-mL transfer pipet ±0.006 mL 10-mL transfer pipet +0.02 mL 100-mL volumetric flask +0.08 mL Method A: Dilute 10.00 mL up to 100 mL with a transfer pipet and volumetric flask. Then take 10.00 mL of the dilute solution and dilute it again to 100 mL. 0.0049 absolute uncertainty: ± ug/mL Incorrect Method B: Dilute 1.000 mL up to 100 mL with a transfer pipet and volumetric flask. 0.4 absolute uncertainty: ± ug/mL Incorrect