 # Question: Is KJ Mol The Same As KJ?

## How do you convert kJ mol to KJ?

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 convert kJ mol to calories?

To get the energy for one molecule, divide kJ/mol by Avogadro’s number, 6.022 x 1023. A calorie was originally defined as the amount of energy required to raise the temperature of one gram of water by one degree Celsius. One calorie = 4.184 J.

## How do you convert eV to frequency?

So 1 eV = (1.6 x 10^-19 coulombs)x(1 volt) = 1.6 x 10^-19 Joules. Now let’s calculate the frequency of the 1 eV photon. E = hf, so f = E/h. Hence, f = 1 eV/6.63 x 10-34 Joule-sec x (1.6 x 10-19 Joule / 1 eV) = 2.41 x 1014 sec-1 or 2.41 x 1014 Hz ( Hz means 1/sec).

## How many photons are in a mole?

The einstein is a unit defined as the energy in one mole of photons (6.022×1023 photons). Because energy is inversely proportional to wavelength, the unit is frequency dependent. This unit is not part of the International System of Units and is redundant with the joule.

## How do you convert joules to kilojoules per mole?

1 Answer. Accepted book enthalpies are in the units kJ/mol. Simply convert J to kJ by dividing by 1000.

## How do you convert kJ mol to KJ kg?

To convert from kJ/mol to kJ/kg, do I multiply by mol/kg (i.e. the number of moles in 1kg)? I would find this using n = mass/molar mass. To convert from kJ/mol to kJ/L, do I multiply by mol/L (i.e. the number of moles in 1L)?

## How many kilojoules are in one mole?

Since 1 mole = 6.02214076×1023 particles (atoms, molecules, ions etc.), 1 joule per mole is equal to 1 joule divided by 6.02214179×1023 particles, or (6.022×10^23 particles/mole), 1.66054×10−24 joule per particle.

## How do you convert kJ per mol to KJ per gram?

As you know, this conversion factor is the molar mass of the given compound. In order to convert kilojoules per gram to kilojoules per mole, you need to multiply by grams per mole.

## How do you convert MOL to kJ?

m2/s2. 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.

## How do you calculate kJ?

You can find the change in temperature by subtracting the starting temperature from the final temperature. So it takes about 334.5 thousand joules (kJ) of heat to raise the temperature of 2 kg of water by 40 degrees C.

## How many kJ are in a gram?

Energy Content1 gram of protein17 kJ1 gram of fat37 kJ1 gram of carbohydrates17 kJ1 gram of dietary fibre8 kJ1 gram of alcohol29 kJ

## How do you calculate kJ to Grams?

However, you need to specify which species is the gram basis. In other words, you are asking for the heat per gram, but per gram of what? Whatever the answer is, then find the total heat output in terms of kJ/mol of that substance, then divide it by the molar mass of the substance (in g/mol).

## How do you convert J to kJ mol in a photon?

Dividing the answer by 1000 to make the change to kilojoules, we get 217.6 kJ/mol. A slightly different way would be to use Eλ = hc (with the wavelength in meters) and solve for E, then multiply the answer times Avogadro’s Number. Finally, divide by 1000 to get kJ/mol.

## How do you convert nm to kJ mol?

Problem #12: What is the energy of light with a wavelength of 662 nm? This is the amount of energy per photon. Often, this type of question will ask for the energy in kJ/mol. In that case, multiply by Avogadro’s Number, the divide by 1000 to arrive at the answer.

## How many atoms are in a mole?

The value of the mole is equal to the number of atoms in exactly 12 grams of pure carbon-12. 12.00 g C-12 = 1 mol C-12 atoms = 6.022 × 1023 atoms • The number of particles in 1 mole is called Avogadro’s Number (6.0221421 x 1023).

## How much is a kJ of energy?

kJ (kilojoules) is the Australian measure of how much energy people get from consuming a food or drink. Energy in food and drinks is measured by the number of kJ (kilojoules) it provides. kJ are similar to Calories: 1 kJ = 0.2 Calories (Cals)