2.) A researcher determined the enthalpy changed associated with the reaction: 2H,S(g) + SO2 > H20(g) +3 S(s) And found the enthalpy change associated with the reaction was: -230.0, -230.2, -230.2, -230.3, -230.6, -230.6, -230.6, -230.8, -230.9 and -232.7 kJ/mol 2.1 Perform a simple Q-test analysis of the data In the next exercises use those data that we are confident are reliable 2.2 Calculate the mean enthalpy change 2.3 Calculate the standard deviation associated with the enthalpy change 2.4 Calculate the median enthalpy change 2.5 Calculate the mode enthalpy change

Please help me with the attached question.

How much did our sodium-in-water demonstration raise the temperature of water in the dessicator jar?  The reaction we performed was:                   Na(s) + H2O(l)    NaOH(aq) + 1/2H2(g)                               qreaction = rHo = -184 kJ/mol-rxn Assuming the dessicator jar is well insulated (like our coffee-cup calorimeter), the energy balance is:                  0 = qsystem = qreaction + qwater    qreaction = -qwater                  qreaction = -mwater*Cwater*Twater The data from the demonstration was:  (a) 1.0 kg water, (b) 22.0oC, (d) Cwater = 4.18 J/g-K, (e) mNa = 0.21 g What was the change in energy, in joules, when the reaction occurred with the given amounts?

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A chemist measures the enthalpy change AH during the following reaction: 2 HNO3(1) + Mg(s)→Mg(NO3),(s) + H2(g) ДН--443. kJ '2 Use this information to complete the table below. Round each of your answers to the nearest kJ/mol. reaction ΔΗ x10 Mg(NO,), (s) + H, (8) → 2HNO,(1) + Mg(s) hno,() + Ma() -- Me(No,),C) + H, G) 1 - Mg(s) 2 Mg(NO,) (s) + ,H, (g) kJ 3. 3 Mg(NO,), (s) + 3H, (g) - 6HNO, (1) + 3Mg(s) ||kJ

Determine the standard enthalpy of formation for N2O given the following information about the formation of NO2 under standard conditions, and ΔHf (NO2) = +33.2 kJ/mol. 2N2O(g)+3O2(g) ---> 4NO2(g)             ΔHrxn= -31.4 kJ

1. Calculate the enthalpy of reaction for the combustion of methane gas, CH4, to form CO,(g) + H,O(1).

A chemist measures the enthalpy change AH during the following reaction: 8 SO,(g) + 16 H,S(9)→3 Sg(s) + 16 H,0() AH=-1863. kJ Use this information to complete the table below. Round each of your answers to the nearest kJ/mol. reaction ΔΗ s, (6) + 4H,0(1) –- 280,(g) + 4H,8(g) 38,(s) + 16H,0(1) → 880, (g) + 16H, S (g) 4S0,(k) + 8H,8(g) -→ s,(.) + 8H,0(1) Explanation Check 72022 McGraw H. MacBook Air esc F2 F3 F5 F4 F6 F7 @ 24 % & 1 4 W R Y *

Calculate the standard enthalpy of formation of solid Ca(OH)2, given the following data: Ca(s) + O2(g) + H2(g) --> Ca(OH)2 (s)   2Ca(s) + O2(g) --> 2CaO (s)                    H= -848.6 kJ 2 Ca(OH)2 (s) --> 2 CaO (s) + 2 H2O (l)    H = +92.2 kJ H2 + 1/2 O2 --> H2O (l)                          H = -236 kJ

Hydrogen peroxide, H2 O2, is a colorless liquid whose solutions are used as a bleach and an antiseptic. H2 O2 can be prepared in a process whose overall change is H2 (g) + O2 (g) –→ H2O2 (1) Calculate the enthalpy change using the following data: 2H2О2(1) — 2H,0() + О-(9); дн: -196.0 kJ На (9) + 3 О2(9) > H20(1); дН — — 285.8 kJ = - ΔΗ - kJ