An advantage of the S.I, (Systéme International d' Unités) Unit system is that if you use the basic units you don't have to worry about conversion factors.
For the seven "fundamental dimensions', the S.I. basic units are:
Length → meter, m
time → second, s
mass → kilogram, kg
temperature → kelvin, K
substance → kilomol, kmol
electric current → ampere, Å
luminous intensity → candel, cd
i.e.; Force = mass∙acceleration → 1 newton = 1 kg∙ m/s
Work = Force∙lenght → 1 joule = 1 N∙m/s2
heat = mass∙(sp.heat cap.)∙(temperature difference) → 1 joule = kg∙[J/(kg∙K)]∙K
So if you are to use this last relation, you have to use joule. If not you have to be
careful in noticing that the result will be in kilojoules, kJ.
To convert from kilojoules to joules you have divide by 1000. meaning 1 kilo joule is equal to 1000 joules.
Lets say, for example the enthalpy is equal to 1200 joules/gram. You take 1200 joules/gram * (# of grams)/one mole [now you can cancel grams and it is now joules/mole.] Then convert the answer to kilojoules by dividing by 1000.
1 Kilojoule is equal to 1000 joules. So, 980 kilojoules x 1000 joules per kilojoule = 980000 joules.
Kilo is the prefix for one thousand. So, 3,872.8 joules is 3.8728 kilojoules.
3.28
40.79 H2O kj/moles x 1 moles/18 grams= 2.266/1000=0.002266 joules/grams
Depends on the type of calorie you're asking about. A "small calorie" which uses the symbol 'cal' is equivalent to about 4.18 Joules. A "large calorie" which uses the symbol 'Cal' is equivalent to about 4.18 Kilo Joules.
energy is measured in joules and kilojoules
kJ for kilojoules and J for joules.
There are 1000 joules in 1 kilojoules. to convert kilojoules to joules you need to multiply by 1000, this means moving the decimal point three places to the right filling any gaps with zeros. 1.5 kJ becomes 1500 J.
The answer is 0.001 kilojoules in a joule 1J = 0.001kJ
The energy in kilojoule cannot be converted to the power in watts. The time is missing. But you can convert kilojoules to kilowatthours (kWh). Scroll down to related links and look at "Energy Converter".