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 is Tfinal in centigrade?

Q: A chemist measures the energy change AH during the following reaction: C,H3(g)+50,(g) → 3…

A: The given reaction is : C3H8(g)  +  5O2(g)  →  3CO2(g)  +  4H2O(l)            ∆H=-2220 kJ

Q: 3) The compound carbon suboxide, CO, is a gas at room temperature. Use the data supplied to…

A:

Q: A chemist measures the enthalpy change AH during the following reaction: H,O(1)→H,O(g) AH=44. kJ Use…

A: When we multiply an equation by any number "n" The enthalpy change (ΔH) of the resultant equation…

Q: endothermic. exothermic.

A:

Q: A drop in water temperature is observed when 0.873 g of ammonium nitrate is added. The enthalpy…

A:

Q: The reaction we performed was:                   Na(s) + H2O(l)    NaOH(aq) + 1/2H2(g)…

A: The objective of the question is to convert the temperature of water from Celsius to Kelvin. The…

Q: 3. A quantity of 1.00 x 10° mL of 0.500 M HC1 was mixed with 1.00 x 10° mL of 0.500 M NAOH in a…

A: Density of solution = 1 g/mL Volume of HCl = 100 mL Volume of NaOH = 100 mL Mass of solution =…

Q: mol

A: The combustion reaction is given as: CH4 + 2O2  ---> CO2 + 2H2O   When 8.01 gram of CH4 are…

Q: A chemist measures the energy change AH during the following reaction: CH,(g)+20,(g) CO,(g)+2H,0(1)…

A: The balanced reaction taking place is given as,

Q: A chemist measures the energy change AH during the following reaction: 2 NO,(9) → N,O4(9) AH=-55.3…

A: Chemical reactions are associated with the liberation or intake of energy. If the energy is added to…

Q: combustion of octane (in gasoline) occurs according to the reaction 2 CgH₁8 + 25 0₂ 16 CO₂ +18 H₂O.…

A: Given-> ∆Hf(octane) = -268.8 KJ/mole ∆Hf(CO2) = -394KJ/mole ∆Hf(H2O) = -286 KJ/mole

Q: Next, 4.490 g of ethylene (C₂H4) are put into the "bomb" and similarly completely burned in an…

A:

Q: A reaction takes place inside a constant pressure calorimeter. The heat absorbed by the calorimete O…

A: At constant pressure the heat absorbed by the calorimeter is equal to the enthalpy of the reaction .

Q: In this reaction, D 2Al(OH)3(s) + 3H2(g) + energy 2Al(s) + 6H2O(g) and heat is transferred from the…

A: Exothermic reaction and endothermic reaction:• Exothermic reaction : Exothermic reactions are…

Q: 5) The table below shows AHvalues for 3 reactions. Reaction DHran 1 C,H;(g) + 5/2 0,(g) → 2CO;(g) +…

A: Enthalpy of a reaction is the heat energy released or absorbed from the reaction. The enthalpy of…

Q: A reaction is carried out in a constant pressure calorimeter and the heat of the CALORIMETER is…

A: The objective of this question is to find the correct option from the given.

Q: A chemist measures the energy change AH during the following reaction: 2 H,O(1) → 2 H,(g)+O_(g)…

A:

Q: When 50.0 g of an aqueous solution of reagent 1 at 24.1oC is added to 100.0 g of of an aqueous…

A: Given : Mass of reagent 1 solution = 50.0 g Mass of reagent 2 solution = 100.0 g Initial temperature…

Q: Consider the reaction: C,H,OH) + 30, (g) →2CO,(g)+3H,01), AH = -1.37 x 10° kJ When a 21.1-g sample…

A:

Q: A chemist measures the energy change AH during the following reaction: 2 NO,(9) – N,0,9) AH=-55 3 kJ…

A: Given reaction;  2NO2 (g)  ----->  N2O4 (g)  ∆H = -55.3 KJ/mol 1. This reaction will be…

Q: A chemist measures the energy change AH during the following reaction: 2 NH3(g) → N,(9)+3H,(g)…

A:

Q: A chemist measures the energy change AH during the following reaction: 2 Fe,03(s) → 4 FeO(s)+O2(g)…

A: To solve this problem we will use the given thermochemical equation .

Q: For the Bunsen burner reaction, CH4(g) + 2O2(g) → CO2(g) + 2H2O(l)  ΔH = - 819.5 kJ How much energy…

A: From the given reaction we can see that 2 moles of O2 is required to react with 1 mole of CH4  =>…

Q: what mass of HF (in g) must react in order to produce 690 kJ of energy

A:

Q: A chemist measures the energy change AH during the following reaction: 2 NO,(g) → N,04(g) AH=-55.3…

A: Given reaction is, 2NO2g→N2O4g;   ΔH=−55.3 KJ

Q: an important flavor component of vanilla extract is vanillin C8H8O3 molar mass = 152.15 g/mol when…

A: We have to calculate the mass of vanillin.

Q: A chemist measures the energy change AH during the following reaction: C3Hg(g)+50,(g) – 3…

A:

Q: 0.015L of 3mol/L NaOH mixes in a calorimeter with 0.013L of 3mol/L HCl, the two initially at 295K,…

A: Given : Concentration of NaOH = 3.00 M Concentration of HCl = 3.00 M Volume of NaOH solution = 0.015…

Q: The reaction we performed was:                   Na(s) + H2O(l)    NaOH(aq) + 1/2H2(g)…

A: The objective of the question is to find the mass of water in the jar in grams. The given data…

Q: When 50.0 g of an aqueous solution of reagent 1 at 24.1oC is added to 100.0 g of of an aqueous…

A: Calorimetry is a chemical process in which we find out the heat transfer associated with the change…

Q: For the reaction 2 SO2(g) + O2(g)  2 SO3(g) G° = -147.8 kJ and S° = -187.9 J/K at 266 K and 1 atm.…

A:

Q: A chemist measures the energy change AH during the following reaction: 2 H,O(1) → 2 H2(9)+O2(g)…

A: Given: Mass of H2O = 82.4 g Molar mass of H2O = 18.01528 g/mol As enthalpy (ΔH) is positive. The…

Q: A chemist measures the energy change AH during the following reaction: CH (9)+20,(9) →…

A:

Q: A chemist measures the energy change AH during the following reaction: 2 H,0(1) → 2 H2(9)+O2(g)…

A: At a particular temperature, amount of heat energy released or absorbed when a chemical reaction is…

Q: 150 ml of .350M HCl was mixed with 150 mL of .350 M NaOH in a calorimeter of negligible heat…

A:

Q: CH3OH(g) ---> CO(g) + 2H2(g) DH = +90.7 kJ Calculate the amount of heat tranferred when 1.54 kg of…

A:

Q: Consider the balanced reaction 2 A + 9 B -→ 6 C + 2 D and the enthalpies of formation provided in…

A: The given balanced reaction is, 2 A + 9 E  → 6 C + 2 D ΔHf (A) = -101.8 kJ/mol ΔHf (B) =  66 kJ/mol…

Q: The following sequence of reactions occurs in the commercial production of aqueous nitric…

A: Given information:

Q: A chemist measures the energy change AH during the following reactic 2 Fe,03(s) → 4 FeO(s)+O½(g)…

A: if ∆H is positive it means heat is absorbed then the reaction will be endothermic.

Q: A chemist measures the energy change AH during the following reaction: 2 Fe,O3(s) → 4 FeO(s)+O,(g)…

A: The balanced reaction taking place is given as,

Q: In a calorimetry experiment similar to the one performed today, a student used 50.0 ml of 1.0 m NaOH…

A: The term specific heat capacity refers to the amount of heat which is required to raise the…

Q: The thermochemical equation for the combustion of methanol is given below. CH3OH (l) + 3/2 O2(g) ->…

A: During the combustion of methane, it reacts with oxygen to form carbon dioxide and water. The…

Q: The reaction for the fermentation of glucose is … C6H12O6 (aq) à 2CO2(g) + 2C2H5OH(aq)     ΔHrxn =…

A:

Q: At the end of 2012, global population was about 7.0 billion people. What mass of glucose in kg would…

A:

Q: The reaction written below has a ΔH of +2,971 kJ          6CO2(g) + 6H2O(g) --> C6H12O6(g) +6O2(g)…

A:

Q: A student runs two experiments with a constant-volume "bomb" calorimeter containing 1300. g of water…

A: Mass of Benzoic acid tablet = 6.000 g Heat of combustion of benzene = 26.454 kJ/g Initial…