Interpretation:
The estimated digits in the measurement 65,430 have to be selected from the given options.
Concept Introduction:
Significant figures are the digits that are present in a measurement which is known with certainty plus one digit that is estimated. Whenever a measurement is made, the significant figures in the measured quantity give the actual measurement. For this the significant figures should be recognized first. The significant figures may be non-zero digit and zero digit. But Zero may be or may not be a significant figure. It depends on where the zero appears. Leading zeros in the front of any number are never significant. Zeros between the numbers are significant. Zeros appearing at the last (trailing zeros) are significant if a decimal point is there in the number. The last digit that produces uncertainty is called the estimated digit.
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Chapter 2 Solutions
General, Organic, and Biological Chemistry
- Q4 - k units Homework • Unanswered What are the units of k? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a M/min b 1/min 1/(M*min) d Marrow_forwardAnswer I. 1 f to jarrow_forwardPart A - Determining the Number of Significant Figures in a Measurement An object is determined to have a mass of 0.01080 g. How many significant figures are there in this measurement? O 2 4. 6. O 5 Оз Submit Request Answer rovide Feedback 2 Type here to searcharrow_forward
- Please help me answer 5. Answer on bracket thank uarrow_forwardSolve for x, where M is molar and s is seconds. (6.1 × 10³ M-²s-¹)(0.25 M)³ Enter the answer. Include units. Use the exponent key above the answer box to indicate any exponent on your units. ► View Available Hint(s) µÅ Value X = Units PODL ?arrow_forwardstion 3 The average of 64 results is how many more times reliable than the average of 4 results ? et answered. ed out of 2.00 Select one g question a. 2 Ob 8 ho o C. 4 Od 16arrow_forward
- Please answer with 3 sig fig the answer is not "2.32x10"arrow_forwardA student sets up the following equation to convert a measurement. (The ? stands for a number the student is going to calculate.) Fill in the missing part of this equation. 4. -6.0 x 10 D- ? x10 2 ha Alb Pro Explanation Check 10 tv escarrow_forwardBrunauer -Emmett -Teller (BET) aims to explain the physical adsorption of gas molecules on a solid surface and serves the basis for 7 of 12 measurement of surface area of materials. The data for the adsorption of N2 on TiO2 are reported below. At 75 K, p*=76.0kPa p*/kPa 0.160 1.87 6.11 11.67 17.02 21.92 27.29 V/mm 601 720 822 935 1046 1146 1254 The equation used to plot (see the attached figure) which confirm (BET isotherm) (C-1)Z (1-Z)V CVmon CVmon 10*z (1-Z)V/mm3 X axis = 10'Z Y axis= where Z=P/p* Use above information and do the followings: a) Fill in the blanks' Y axis X axis b) From the graph given below, use slope and y-int to find "C" and Vmonarrow_forward
- V. Activities General Directions: Write all your answers in your activity notebook. A. How Close? Directions: Compute the percent error for each of the experiments. Assume that the observed value is the mean of the measurements. Express your answer up to 2 decimal places. True Value 124 g True Value 1.75 lb 1. 6. Trial # 1 120 g Trial # 1 2.75 lb Trial # 2 121 g Trial # 2 2.76 lb Trial # 3 120 g Trial # 3 2.78 lb True Value 1.15 L True Value 0.15 m 2. 7. Trial # 1 0.95 L Trial # 1 0.09 m Trial # 2 1.16 L Trial # 2 0.23 m Trial # 3 1.26 L. Trial # 3 0.36 m True Value 766 atm True Value 1.43 cm 3. 8. Trial # 1 765.9 atm Trial # 1 1.44 cm Trial # 2 765.8 atm Trial # 2 1.42 cm Trial # 3 766.4 atm Trial # 3 1. 40 cm True Value 10.1 N True Value 9.81 m/s 4. 9. Trial # 1 7 N Trial # 1 14 m/s Trial # 2 3 N Trial # 2 8 m/s Trial # 3 5 N Trial # 3 11 m/s? True Value 15 psi True Value 36.5°C 5. 10. Trial # 1 20 psi Trial # 1 37.2 °C Trial # 2 21 psi Trial # 2 36.1 °C Trial # 3 19.5 psi Trial # 3…arrow_forwardQno. 1 Short Answerarrow_forwardSTARTING AMOUNT + X 7.6 ADD FACTOR x( ) (1)³ (100)³ Convert 7.6 cm³ to m³ 7.6 x 10-6 7.6 x 10-4 cm 1000 0.1 cm³ ANSWER (0.1)³ 100 m³ 1 (1000)³ m RESET J 0.01 (0.01)³ 0.076arrow_forward
- General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage LearningChemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub Co