It is often necessary to do calculations using scientific notati each of the following calculations. (6.60 6.60 x 107 x 10-5) (9.20 x 105) = [ × 7.08 × 104 5.09 × 104 x (6.60 × 10-5) (5.09×104) 1.00 × 10−8) (7 -8) (7.08 × 104) = Submit Answer Retry Entire Group 9 more group attempts remair
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Use the References to access import
It is often necessary to do calculations using scientific notati
each of the following calculations.
6.60 × 10-5) (9.20 × 10
105) =[ |
7.08 × 10¹
5.09 × 10¹
(6.60 × 10-5) (5.09 × 10¹)
10-8) (7.08 × 104
1.00 x 10
104)
Submit Answer
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- Be sure to answer all parts. Enter your answer in scientific notation. Carry out the following calculation, paying special attention to significant figures, rounding, and units (J-joule, the SI unit of energy; mol = mole, the SI unit for amount of substance): (6.022 x 1023 atoms/mol) (4.68 x 10-18 J/atom)(1-2-3-2)=[25.051 Note that the numbers 1 and 3 in the last term are exact. x 10 J/molQuestion 10 What is the correct equation for percent difference? |measured+accepted| |measured-accepted|/2 х 100 |value 1-value 2|| |value 1+ value 2|/2 × 100 |mеasured-accерeted] |accepted| х 100 |value 1 -valuие 2| х 100 laccеptedMon 4:35 PM nnections | Un X * Student Employment | Car X Illinois State University : H X Mind Tap - Cengage Learn X G If a sample of lithium con index.html?deploymentld%3D55750828934189288909969212&elSBN=9781305657571&nbld%3D2199898&snapshotld%3219989. * DTAP Q Search this Use the References to access important values if needed for this question. If a sample of lithium contains 2.50x10 atoms of lithium-7 and 2.00×10³ atoms of lithium-6, what is the percentage of lithium-6 atoms in the sample? Submit Answer 5 question attempts remaining Next Autosaved at 4:32 PM Back
- Wrong (L) - calculator- Google Search d/1PrqdNDx-hBYyzKo-xfiM9-Jlq7EAaWe3GBt t3U3jDo/edit Calculator O A Land of Permane... t edit was seconds ago I U A 三| 扫 E▼ 三▼ 4 Fe + 30, - 2 Fe,0, 4. What volume (liters) of O, is required to react with 1.7 moles of Fe? 1.7 moles Fe 1 mole O. 224 LO, 4 moles Fe 1 mole O. * How many meles of iron would have to reacr to produce 35moles of tron ) oxide"You have been provided with data of 2 groundwater samples. The following are the major constituents (in mg/l): Parameter Sample 1 Sample 2 Са 35 27 Mg 33 5.75 Na 28 16 K 1.3 0.7 НСОЗ 177 327 SO4 15 22 Cl 6.9 4.4 Boron 4.0 1.0 EC (dS/m) 0.511 0.237 TDS (mg/l) ? Tasks: 1. Check for Ionic balance. 2. Estimate TDS in mg/L 3. Show data in a. Vertical bar graph b. Vector diagram c. Pattern diagram d. Circular diagram e. Trilinear diagram f. Schoeller semilogarithmic diagram 4. Calculate %Na, SAR, Hardness 5. Discuss suitability of these waters for agricultural use. 6. Is this water suitable for drinking? What treatments will be needed to make it drinkable? 7. Is there any seawater intrusion in these aquifers? Expalin. 8. Make any other relevant commentsA sample sodium is being dried. After 1 hour drying, the mass of the sample was 0.337g. After an additional 30 minutes of drying, the mass of the sample is 0.333g. What is the percent change between the first and second meaasurement? if to be considered "dry", two consecutive measurements must have a percent change <_ +- 1%; is the sample dry?
- Multiply: (8.5 × 10') × (7.41 × 10") = 102) (a) %3D 8.8 × 10-8) × (8.6 x 10°) (8.6 x 10°) (b) (0) (8.62 x 10") × (9.4 x 10-") (d) (9.2 x 10-°) X (8.8 x 10-154 A model for the compound butane is shown. E 20 F3 D C Submit Answer 4 Write a balanced chemical equation that shows the formation of butane from the elements carbon (C) and hydrogen (H₂ ). (Use the smallest integer coefficients possible and do not include states.) ball & stick-+ labels 200 000 F4 R F + H % 5 V WH [Review Topics] [References] Use the References to access important values if needed for this question. Retry Entire Group 9 more group attempts remaining Cengage Learning Cengage Technical Support F5 T G B MacBook Air F6 Y H & 7 F7 U N * 8 J F8 M ( 9 K DD FO O F12 I } delete45°F Cloudy ||| O MEASUREMENT AND MATTER Setting up a unit reprefix conversion V A 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. 5 N N (-1,7 × 10³ —`-) · - · —— 11 Explanation Check Search M x10 . X 3 8 (0) L 3 © 2023 McGraw Hill LLC. All Rights Reserved. = (Q)
- EXAMPLE 3-4: MORE-COMPLEX UNIT CONVERSION Convert the density of iron from 7.874 g/cm³ into kg/m³. Solution g 7.874 (1000) (- 3 7 874000 kg 1kg) (100cm) = (²1000 m) = 7874 kg/m³ m³ 3 Notice in Example 3-4 that we needed three identical conversion factors to eliminate the cm³. We also placed cm in the numerator of the conversion factor because cm³ was in the denominator of the measure- ment. So you see that the problem tells you where to put the units. 3.1 SECTION REVIEW 1. What do we call the process by which scientists quantify their observations of their surroundings? 2. What is a dimension? 3. What measuring system is used by scientists around the world? 4. Explain how a measurement system is a model. Why is it important that scientists have a stan- dardized system? 5. Explain one of the three reasons for the almost worldwide usage of the SI. 6. What is the Sl fundamental unit for temperature, and on the basis of what physical constants is it defined? KILD 7. Write an equation that…Acetic acid percentages in five vinegar samples were 4.98, 4.86, 4.97, 4.99. 5.08, 5.11, 4.97, 5.32 and 4.89. Could we reject any of these values with 95% confidence? Q critical = experimental Q = Therefore (yes or no) the suspicious data can be rejected (write the value of the data that can be deleted, example 5.08).3. For 100 firms on NYSE, we know: X=sector of activity (finance, tourism, statistics) and Y=return on stocks (0-5:5-10;10-15). On average, the return of a company from finance sector is 12.5. On average, the return of a company from tourism sector is 12.5. On average, the return of a company from statistics sector is 12.5. Which of the following statements is true in regards the relationship between X and Y? Select one: O a. low correlation O b. strong correlation OC. medium-intensity correlation O d. No correlation