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- Given the reaction of 4 C (s) + 3 H2 (g) + O2 (g) 2 C2H2 OH (1) AH %3D 542 J | What would the AH for 4 C2H2 OH (1) → 8 C (s) + 6 H2 (g) + 2 02 (g) be? O-271 J O 1084 J O 271 J O-1084 J 73°F SThe heat of formation at 25°C of liquid acetone, CH,C(0)CH,(1) is -247.5 kJ/mol. Which of the following is the correct heat of formation reaction for CH,C(O)CH,() )?Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction free energy of the following chemical reaction: 4Fe (s)+30, (g)→ 2Fe,0, (s) Round your answer to zero decimal places. kJ x10 Continue O2021 McGraw Hill LLC. All Rights Reserved. Terms
- 2Cr(s) + 3Cu2+(aq) ⟶ 2Cr3+(aq) + 3Cu(s) Calculate the EcellD[α] 20 (° mL/ dm g) α (°) c l +10.5 5.2 kg/ L 35 cm – 15.75 2.3 g/ mL 15 cm + 5.25 +134.45 1.8 g/ mL ___cm + 63.74 + 125.8 42 cmA chemist obtained the following data for percent lindane in the triplicate analysis of an insecticide preparation: 7.23, 6.95, and 7.53%. Calculate the 90% confidence interval for the mean of the the three data, assuming that (a) the only information about the precision of the method is the precision for the three data. (b) on the basis of long experience with the method, it is believed that s---->σ lindane. (c) If s=0.28 is good estimate of σ, how many replicate measurement should be made in order for the mean for the analysis of sample to be within 0.2% of the true mean 90% of the time.
- When does the value of Q = K? %3DBe sure to answer all parts. Covalent bonds in a molecule abso rb radiation in the IR region and vibrate at characteristic frequencies. (a) A molecular vibration absorbs radiation of wavelength 176 µm. What frequency (in s) corresponds to that wavelength? Enter your answer in scientific notatio n. X 10 -1 (b) A molecular vibration has a frequency of vibration of 6.753 x 10 m) corresponds to that frequency? 13 Hz. What wavelength (in p IIO $4 %23 2 4 3. 7. e p4:05 PM 75% l Verizon ? Question 2 of 7 Submit Which of the following is the correct expression for Ksp for Zn3(PO4)2? [Zn2+][PO{-] A) Ksp [Zn3 (PO4)2] B) Ksp = [Zn²+][PO;-] ds, C) Ksp = [Zn?+]³ [P0;-]² [Zn?+]*[PO;-]? Ksp [Zn3 (PO4)2] D) A) see problem image B) see problem image Tap here or pull up for additional resources
- 2A + b <-> C. Kc = 9.1C + D <-> 2E. Kc = 3.2 calculate Kc for: A + 1/2B + 1/2D <-> EDetermine the hybridization of the central atom for each molecule. :ci: -AI- :CI: sp sp² sp³ O sp³d O sp³ d² -CI: sp sp² O sp³ sp³ d O sp³ d²Given the following data 2 CIF(g) + O2(9) — Сlp O(9) + F,O(9) 2 CIF3 (9) + 202(9) —> Clz O(9) + ЗF20(9) 2F2 (g) + O2 (9) → 2F20(g) AH= 167.4 kJ AH=341.4 kJ AH=-43.4 kJ calculate AH for the reaction CIF(g) + F2 (g) → CIF3 (g) ΔΗ= kJ Submit Answer Try Another Version 1 item attempt remaining