Use the References to access important values if needed for this question. When 52.7 and 84.3 are multiplied, the answer should be reported to significant digit(s). The product reported to the correct number of significant digits is Use scientific notation to express your answer. The sum of 52.7 and 84.3 should be reported with the decimal point. The sum reported to the correct number of decimal places is digit(s) after

Use the References to access important values if needed for this question. When 52.7 and 84.3 are multiplied, the answer should be reported to significant digit(s). The product reported to the correct number of significant digits is Use scientific notation to express your answer. The sum of 52.7 and 84.3 should be reported with the decimal point. The sum reported to the correct number of decimal places is digit(s) after

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter2: Measurements And Calculations

Section: Chapter Questions

Problem 117AP: For each of the following numbers, by how many places must the decimal point be moved to express the...

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When 2891 is written in scientific notation, the exponent indicating the power of 10 is .
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Find the difference between the value of x2 and the sum of x1 plus x3.; let x4 be equivalent to the sum of x1 and x3 and let x5 be the difference between x2 and x5. This calculation scheme is shown below. Make notes about any similarities or differences between the values in your notes. x4 = x1 + x3 x5 = x2 – x4 Data Analyis This section will include all data collected during the lab. Thermochemical Data Tinitial (°C) Tfinal (°C) ΔT (°C) moles NaOH qreaction (kJ) ΔHrxn Reaction 1 25.0 30.3 +5.3 0.025 -1.11 -44.4 Reaction 2 25.0 37.0 +12.0 0.025 -2.51 -100.4 Reaction 3 25.0 31.7 +6.7 0.025 -1.40 -56.1 Reaction 1: NaOH(s) → Na+(aq) + OH-(aq) + x1 kJ 1g /39.977g/mol = 0.025 moles Moles NaOH = 0.025 qsolution = (4.184 J/g °C) (50.0g) (30.3°C -25.0°C) = -1108.76 J/ 1000 qreaction (kJ) = -1.11 kJ ΔH = -1.11 kJ/ 0.025 moles ΔHrxn = -44.4 kJ/mol…
Use the References to access important values if needed for this question. When 66.875 is added to 18.16, the result should be reported with When 88.94 is subtracted from 35.92, the result should be reported with When 66.875 is multiplied by 18.16, the answer should be reported to When 35.92 is divided by 88.94, the answer should be reported to Submit Answer 4 question attempts remaining digit(s) after the decimal point. digit(s) after the decimal point. significant digit(s). significant digit(s).
4. Three different people weigh a standard mass of 2.00 g on the same balance. Each person obtains a reading of exactly 7.32 g for the mass of the standard. These results imply that the balance that was used is:A accurate but not precise B both accurate and preciseC precise but not accurateD neither accurate nor precise
1. All answers to be entered via short answer are in the NUMERICAL FORMAT and presented up to the 3rd decimal place. ADD TRAILING ZEROS if necessary, to complete your answer. NO NEED TO INCLUDE THE UNIT for now.For uniformity of answers, please be guided by the following examples:- If your answer is 5.627594, enter 5.628- If your answer is 3.129934, enter 3.130- If your answer is 8.38, enter 8.380- If your answer is 1.2, enter 1.200- If your answer is 25, enter 25.000- If your answer is less than the value of 1, always place a zero before the decimal point (E.g.: if 0.5, enter 0.500)2. In cases for answers in the EXPONENTIAL FORMAT, please be guided by the following examples and format:- Do not convert your answer to decimal format- If your answer from the calculator is 1.23454566 x 10E-4, enter 1.235x10^-4 (no spaces in between)- If your answer from the calculator is 7.379566 x 10E-5, enter 7.38x10^-5 (no spaces in between)3. The ATOMIC MASSES should be rounded to the NEAREST WHOLE…
Can some one please answer this question under 10 minuties please because I ask like hour already this question and no one answer can some one please answer this question.
a. When 90.65 and 36.969 are multiplied, the answer should have ( Enter the answer with the correct number of digits. 90.65 x 36.969 = b. When 90.65 and 36.969 are added, the answer should have v Enter the answer with the correct number of digits. 90.65+ 36.969 =