Consider the following reaction, with the table of values provided. Calculate the ΔSº of the reaction in J/mol-K. Express your answer in three significant figures. Do not include the unit in your answer.

Measurements show that the enthalpy of a mixture of gaseous reactants increases by 195.kJ during a certain chemical reaction, which is carried out at a constant pressure. Furthermore, by carefully monitoring the volume change it is determined that 69.kJ of work is done on the mixture during the reaction.  Calculate the change in energy of the gas mixture during the reaction. Be sure your answer has the correct number of significant digits. Is the reaction exothermic or endothermic?

In a constant‑pressure calorimeter, 60.0 mL of 0.320 M Ba(OH)2 was added to 60.0 mL of 0.640 M HCl.The reaction caused the temperature of the solution to rise from 24.50 ∘C to 28.86 ∘C. If the solution has the same density and specific heat as water (1.00 g/mLand 4.184J/g⋅°C, respectively), what is ΔH for this reaction (per mole H2O produced)? Assume that the total volume is the sum of the individual volumes. ΔH= _________ kJ/mol H2O

When 3.50 g of sodium hydroxide (NaOH) was dissolved in 50.00 g of water a value of 9.50oC was obtained for ΔT. Calculate the value (calories) for the heat of solution of 3.50 g of NaOH. Calculate the number of calories that would be produced if one mole of sodium hydroxide was dissolved. (ΔHsolnNaOH)

A system does 501 kJ of work and loses 216 kJ of heat to the surroundings. What is the change in internal energy, AE, of the system? Note that internal energy is symbolized as AU in some sources. AE = kJ

A student dissolves 10.7 g of lithium chloride (LiCl)in 300. g of water in a well-insulated open cup. She then observes the temperature of the water rise from 22.0 °C to 28.4 °C over the course of 3.6 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: LiCl (s) Lit (aq) + Cl(aq) You can make any reasonable assumptions about the physical properties of the solution. Be sure answers you calculate using measured data are rounded to 2 significant digits. Note for advanced students: it's possible the student did not do the experiment carefully, and the values you calculate may not be the same as the known and published values for this reaction. Is this reaction exothermic, endothermic, or neither? If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in this case. Calculate the reaction enthalpy ΔΗ. per mole of LiCl. rxn 0 exothermic…

Many barbeque grills use propane gas, C3H8(g) as a fuel source. Using standard enthalpies of formation, calculate the quantity of heat produced, in kJ, when 25 liters of liquid propane is completely combusted in air. (The density of liquid propane is 582 kg/m3.) Note: The propane is in the condensed liquid state in the tank but changes to the gas phase as it is released. Calculate the change in enthalpy for the reaction assuming all reactants and products are in the gas phase.