For each of the mathematical expressions given: 1. Tell the correct number of significant figures for the answer. 2. Evaluate the mathematical expression using correct significant figures in the result. 29.3 (284 x 4.2) 15.2 2.75+ 16.67 3.984 x 2.16 0.0714.36 2.17+ 4.32 + 401.278 + 21.826 17.1 +0.77 Number of Significant Figures Result

© Macmillan Learning Perform the calculation and report the answer using the proper number of significant figures. Make sure the answer is rounded correctly. 1.012 × 10-³ J = (0.016456 g) (298.3682 298.3567) K g. K

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…

Round each answer to the correct number of significant figures. 9 +2.8 - 0.135+10.8=22.265 My previous answer was 22.3 it was incorrected.

Express each result to the proper number of significant figures  0.00071+0.002+0.00008 0.9827-0.06 14.9164-10.08+3282 8.13 x 102+8.13 x 103 1.784 x 104-3.6738 x 103 5.4989 x 10-3-1.5300 x 10-2

7) (3.4617x 102) (5.61 x 10-4) (9.87x 105) (3.1) (1.171 x 104) = 8) (3.52164 x 102)(3.1741 x 105) (8.22 x 107) (4.65217 x 10-3) (9.711 x 104) 9) (1.8741 x 1011) (5.6 x 104) (2.173 x 108) || 10) (1.745 X 100) (9.51 x 107) = (16.21) (9.346 x 10-10)

What is the uncertainty in the measured value 12.37040 after it is rounded to the following number of significant figures? The uncertainty of 6 is? The uncertainty of 4 is? The uncertainty of 3 is?

Make the following calculation and report your answer to the correct number of significant figures running to the result, if necessary.  (4.566+ 6.2192)/ 88.92

I need the answer as soon as possible

5) significant figures should be retained in the result of the following calculation: (354.0 + 21.01) x 107 (0.012 + 2.30) x 10² 1 O O