Feb 1, 2022 · Re: kJ vs. J Post by Emily Nguyen 3L » Wed Feb 02, 2022 9:44 am Like others have said, it depends on the problem you are given and the units that values are given in.

Feb 21, 2019 · Delta G is the measure of the change in free energy in a reaction, so you would use either J or KJ; However, you use KJ/mol or J/mol as the units when in respect to a certain number of moles of the species in the reaction.

Feb 19, 2021 · The value of R which has to be used depends on the units: 8.314 J mol-1 K-1 or 0.08206 L.atm mol-1 K-1 Also, you don't have to remember these, just look it up on the equation sheet! Top

Mar 16, 2024 · The enthalpy of a reaction is given by the amount of energy (J, kJ) released or absorbed per mole. While you can have 1/2 of a mole of some molecule, you cannot have 1/2 of a molecule, so fractional coefficients are allowed in Hess's Law.

Jan 28, 2015 · I would think answers in Joules or in KJ would be accepted since they are basically the same answer either divided by 1000 or multiplied by 1000. For example, 5kJ = 5000J, so whether you choose to express that in kJ or J either way should be correct.

Feb 21, 2022 · The boiling point of a substance occurs when delta G = 0. To solve this problem, use the equation delta G = delta H - T*delta S. Make sure to convert delta S from J to kJ. Once you solve for T in K, subtract 273 to find it in Celcius.

Jan 12, 2017 · Then using equation 3 in the textbook (since pressure is constant throughout expansion), find the work done by the system using the change in volume and the given pressure 1070 atm. (Remember to convert the given pressure [in atm] to …

= 38 kJ mol 1= 38000 J mol. −1. Convert degrees Celsius to Kelvin: 25 °C = 298.15 K and 37 °C = 310.15 ...

Mar 16, 2021 · sabrina ghalambor 2J wrote:the ° symbol doesn't imply that the rxn is at 298 K, but rather that this is a value calculated from the reaction at equilibrium (i believe). so yes, we can calculate these values at different temperatures. i would assume that H and S will be adjusted to different temperatures but we're normally given standard values to find these so i think it still …

Feb 20, 2023 · Hi! I would appreciate if someone helped with this problem. Thanks! The ΔHvap of a certain compound is 26.66 kJ·mol−1