How does decreasing the total energy of the system affect the stability of the pair of atoms in the system? Does this decrease in total energy make them more or less likely to stick together (AKA form a stable interaction)? Choice 1 :More likely to stick together Choice 2 of 2:Less likely to stick together Explain why in the box below, be sure to reference the actions of the atoms and molecules as the energy flows from the system (two He atoms) to the surroundings (the outside molecule).

THERMOCHEMISTRY 237 23 3. A student wishes to determine the enthalpy of the reaction of hydrogen gas with chlorine gas by the reaction represented below. A high-pressure bomb calorimeter is used for this experiment. A 500.-mL high-pressure cell is filled with an equimolar mixture of H,(g) and CL,(g) to a total pressure of 10.00 atm and 293.50 K. H,(g) + CL(g) → 2 HCI(g) (a) If the reaction goes to completion, how many moles of HClI(g) can be produced? (b) The high-pressure sealed cell was placed in the bomb calorimeter and the mixture was ignited with an internal spark. The temperature of the calorimeter rose from 293.50 K to 298.83 K. If the previously-measured heat capacity of the whole calorimeter was C 3.60 kJ/K, calculate the heat transferred to the calorimeter by the reaction. (c) Calculate the experimental enthalpy of reaction in kJ/moln

The following diagram represents the Carnot cycle. Which of the following processes present when heat (q) is either absorbed by or released to the surrounding?

Propane is a gas commonly used to fuel gas grills and camping stoves.  The structure of propane is shown below. Write the balanced chemical equation for the combustion of propane.  Draw out lewis dot structures to represent all molecules of all products and reactants in this reaction.  The number of each molecule should be reflected in the balanced equation.  Calculate the heat of combustion for propane using the bond enthalpies in the table.  1.00 mol of propane is used to roast marshmallows.  It was determined that the amount of energy absorbed by the marshmallows was only 800 kJ.  Explain this observation.

15. A kilogram of water and a kilogram of HCl are at the same temperature. Do the two substances contain the same amount of heat energy? Explain.

calculate the heat of fusion (red part) given the heat capacity (83.2 Celsius) and other important data.

Describe, using curly arrows, how limonene is biosynthesized from geranyl pyrophosphate. ham OH OH Geranyl pyrophosphate Limonene Synthase Water -$ Limonene 0=d²-5 0=0-5 OH OH

The enthalpy change for a chemical reaction is the sum of the energy consumed in breaking bonds and the energy released during bond formation. One way to determine the overall energy change for a chemical reaction is to apply Hess’s law to add together a group of reactions which can be arranged such that the chemical equations, when combined, give the overall equation we are trying to characterize.     a. Write a balanced chemical equation for the combustion of gaseous propane in gaseous oxygen to produce gaseous carbon dioxide and liquid water.      C3​H8​(g)+    O2​(g) ---->CO2​(g)+     H2​O(g)   b. Combine the following equations to determine the enthalpy change for the combustion of 1 mole of propane. Assume that solid carbon is graphite.  3C(s,graphite)+4H2​(g)--->C3​H8​(g) ΔHo = -103.8 kJ/mol   C(s,graphite)+O2​(g)--->CO2​(g) ΔHo= -393.5 kJ/mol   H2​(g)+1/2​ O2​(g)--->H2​O(g) ΔHo= -285.8 kJ/mol      kJ/mol…

Constant is 4.184