## How do you convert joules to kJ mol?

To convert a joule measurement to a kilojoule measurement, divide the energy by the conversion ratio. The energy in kilojoules is equal to the joules divided by 1,000.

### How do you convert kJ to mol to joules?

Re: How to convert kJ/mol to J Answer: Cancel out the 1/mol unit by dividing by the Avogadro constant. Then convert kJ to J by multiplying the kJ value by 1000 (because of the conversion factor 1 kJ = 1000 J).

How do you calculate moles from joules?

Since 1 mole = 6.0221407×1023 particles (atoms, molecules, ions etc.), 1 joule per mole is equal to 1 joule divided by 6.02214076×1023 particles, 1.66054×10−24 joule per particle. This very small amount of energy is often expressed in terms of a smaller unit such as the electronvolt (eV, see below).

How many J is the same as one kJ?

Joules and KiloJoules are units of the international system of units (SI) that measure energy. The standard symbol for Joule is J, whereas the symbol for KiloJoule is KJ. 1 J equals precisely 0.001 KJ, therefore there are 1,000 Joules in a KiloJoule.

## Can you convert joules to moles?

Divide the number of joules released in the reaction by the known joules per mole constant for that type of reaction. For example, if a reaction between sodium hydroxide and water releases 30,000 joules of energy, divide 30,000 by 55,200 to get . 54 moles.

### How many kJ are in a mole?

The prefix “kilo” means 1,000, so one kJ = 1,000 J. As the energies associated with a single molecule or atom are quite small, we often find it easier to discuss the energy found in one mole of the substance, hence “per mole”. To get the energy for one molecule, divide kJ/mol by Avogadro’s number, 6.022 x 1023.

Is enthalpy in J or kJ?

ENTHALPY IS HEAT FLOW AT CONSTANT PRESSURE Heat flow is thermal energy flow, so the units are in J or kJ . Typical enthalpy therefore has the same units.

How do you convert from energy to moles?

Multiply the photon energy value by Avogadro’s number to find the energy of one mole of photons. Avogadro’s number is the quantity of the number of molecules or particles in one mole of a particular substance and is equal to 6.02 x 1023.

## What is J in chemistry?

J (J): (1) The joule. An International System of Units energy unit equal to an applied force of one newton through a distance of one meter, or the energy equivalent to passing an electric current of one ampere through a resistance of one ohm for one second.

### How do you calculate Joules?

Multiply watts by seconds to get joules. To find out how much energy a 60W light bulb consumes in 120 seconds, simply multiply (60 watts) x (120 seconds) = 7200 Joules. This formula works for any form of power measured in watts, but electricity is the most common application.

When enthalpy is in kJ or kJ mol?

The standard enthalpy of reaction is symbolized by ΔHº or ΔHºrxn and can take on both positive and negative values. The units for ΔHº are kiloJoules per mole, or kj/mol. The Standard State: The standard state of a solid or liquid is the pure substance at a pressure of 1 bar ( 105 Pa) and at a relevant temperature.