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Round off each of the following calculator answers to three significant figures:
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Basic Chemistry
- A=2.222 A= b5=1290 B= c=2.001.57 C= d4.69=0.0429 d=arrow_forward0 F3 4 $ Answer X f. 2.94 x 10-5 Answer+ 13. Write each of the following numbers in standard scientific notation. a. 1/1033 b. 1/105 c. 1/10-7 d. 1/0.0002 e. 1/3,093,000 f. 1/10 4 8.1/10⁹ h. 1/0.000015 14. Write each of the following numbers in standard scientific notation. a. 1/0.00032 RELTONGC MacBook Air F6 F7 O 000 000 F4 % 5 Pre H Re F5 < 6 & 7 * ► 11 8 F8 1 9 1 F9 O 1 0 FIarrow_forwardConsider the following operations on the number 2.23 x 10-2. Without using a calculator, decide which would give a significantly smaller value than 2.23 x 10², which would give a significantly larger value, or which would give essentially the same value. -2 a. 2.23 x 10 + 8.44 x 105 b. 2.23 x 10 2 - 8.44 x 105 c. 2.23 x 102 x 8.44 x 10 d. 2.23 x 102÷ 8.44 x 105arrow_forward
- To how many significant figures should each answer be rounded? (6.626x 10-34 J . s) (2.9979x 10% m/s) equation A: = 4.483992189616 x 10-19 J (unrounded) 4.430 x 10-7 m After rounding, the answer to equation A should have O 1 significant figure. O 4 significant figures. O 2 significant figures. O 3 significant figures. O 5 significant figures. (6.022x 1023 atoms/mol) (0.653 g) 20.18 g/mol = 1.949 x 1022 atoms (unrounded) equation B: After rounding, the answer to equation B should havearrow_forward1. In which of the following pairs do both numbers contain the same number of significant figures? a. 2.0500 m and 0.0205 b. 600.0 K and 60 K c. 0.000 75 s and 75 000 s d. 6.240 L and 6.240 X 10 -² Larrow_forward1arrow_forward
- Conversions: include the correct number of significant digits and follow the format included in the image. a. 0.20 m to mm b. 2.23 ks to s c. 78.9 mg to garrow_forwardComplete each row of the table below by filling in the missing prefix or missing exponent. 1 ds 10 S. 1. -3 10 IS 1ns 10 !! -2 10 S I Don't Kngyw Suhmitarrow_forwardSolve each problem, and express the answer in scientific notation.a. (4 × 1 0 2) × (1 × 1 0 8) c. (6 × 1 0 2) ÷ (2 × 1 0 1)b. (2 × 1 0 -4) × (3 × 1 0 2) d. (8 × 1 0 4) ÷ (4 × 1 0 1)arrow_forward
- Convert 234.0 x10^-4 to the proper exponential notation following thr rules of significant figures. A. 2.340x10^2 B. 2.340x10^ 0 C. 2.340x10^-2 D. 2.34x10 ^ 3 E. 2.340x10^ 3 F. 2.340x10^-1 G. 2.34x10^-2 H. 2.34x10^2 I. 2.34x10 ^-3 J. 2.340x10^ -3 K. 2. 349x10^1 L. 2.340arrow_forwardA. Rounding Off A.1 Rounding A student rounded off the following calculator displays to three significant figures. Indicate if the rounded number is correct. If it is incorrect, round off the display value properly. Calculator Student's Correct (yes/no). Corrected (if needed) Display Rounded Value 24.4704 24.5 143.63212 144 532 800 530 0.00858345 0.009 8. 8.00 17arrow_forward5 nyoor X A the p X Spoti x A Chap x E * Par X Netfli X Goo 53. Calculate Make the following conversions. Express your answers in scientific notation. a. 14.8 g = ? ug b. 3.72 g = ? kg C. 66.3 L ? cm³ d. 7.5 x 104 J = ? kJ e. 3.9 × 10° mg = ? dg f. 2.1 X 10 dL = ? µL %3D %3Darrow_forward
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