Chapter 1, Problem 1.55E

Bob and Jill are measuring the height of Mr. Chenet (Mr Chenet is 1.8593 meters tall). Bob gets a measurement of 1.6329, while Jill gets a measurement of 1.8. This means that Bob is more accurate, while Jill is more precise.  True or False?

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…

9 and 10 answer both

6. Perform the following calculations and report each answer with the correct number of significant figures. (53.9 +11.21) x 10.3

Assignment/take Covalent Activity.do?locator=assignment-take $ 4 Submit Answer [Review Topics] [References] Use the References to access important values if needed for this question. a. When 68.938 and 17.6 are added, the answer should be based on 2 significant figure(s). Enter the answer with the correct number of digits. 68.938 +17.6 = 104.54 decimal place(s) b. When 99.137 is divided by 44.926, the answer should be based on 2✔ significant figure(s) Enter the answer with the correct number of digits. 99.137 44.926= 2.21 F4 % 5 Retry Entire Group 4 more group attempts remaining F5 Cengage Learning Cengage Technical Support 6 MacBook Air F6 & 7 A F7 * CO ㅊ입 ▷II F8 ( 9 4 F9 ) A O F10 VOTING NOVE us.shein.com SHEIN X VACA CONTEST art would you II Previous Email Instructor F11 + 11

To divide numbers in scientific notation: divide the digit terms and subtract the exponents. (A x 10)/(B x 10²) (A/B) x 10 Y-z (5.6 x 105)/(1.8 x 10²) = (5.6/1.8) x 105-2 (You may have to put numbers back in proper notation!) Perform these calculations (2.2 x 104) (1.3 x 10²) = (1.6 x 1033)/(1.3 x 10-6) = (4.6 x 1022) (1.2 x 10-8) = (5.6 x 107)/(1.0 x 10²) = (2.6 x 10²) (1.1 x 10-²) = = 3.1 x 10³ not used this semester. Before Adding and subtracting in scientific notation performing this function you must make the exponents the same first. 1.0 x 102 Example: 1.2 x 105 + You can't just add the digit terms because one is really a very large number so either take them both out of notation then add 120000 + 100 = 120100 or write one of the numbers out of proper notation in order to get the same exponent: now write in proper notation 1.201 x 105 1200 x 102 +1.0 x 10² = 1201 x 10²

Please refer to this table underneath. I have the answer for Part A I need help with Part B & C. Thanks. Kelvin  Fahrenheit  Celsius 273.0 K.          ?             0.0∘C       ?           -37.0 ∘F.        ? 386.0 K.        ?                  ? PART A : Complete the first row. Express your answer using one decimal place. I have the part A the answer is 32∘F. PART B: Complete the second row. Express your answers using one decimal place separated by a comma. ? PART C: Complete the third row. Express your answers using one decimal place separated by a comma.

An electric current of 21.50 A flows for 21.0 minutes. Calculate the amount of electric charge transported.. Be sure your answer has the correct unit symbol and 3 significant digits. 7 x10 •O U 89 S

For the image attached be sure your answers have the correct number of significant figures plus show calculations