How many kilojoules is this?

How to convert joules to kilojoules

One joule is equal to thousandth of a kilojoule:

1J = 0.001kJ

The energy in kilojoules E(kJ) is equal to the energy in joules E(J) divided by 1000:

E(kJ) = E(J) / 1000

Example

Convert 500 joules to kilojoules.

The energy E in kilojoules (kJ) is equal to 500 joules (J) divided by 1000:

E(kJ) = 500J / 1000 = 0.5kJ

Joules to kilojoules conversion table

Energy (J)Energy (kJ)

1 J0.001 kJ

2 J0.002 kJ

3 J0.003 kJ

4 J0.004 kJ

5 J0.005 kJ

6 J0.006 kJ

7 J0.007 kJ

8 J0.008 kJ

9 J0.009 kJ

10 J0.01 kJ

20 J0.02 kJ

30 J0.03 kJ

40 J0.04 kJ

50 J0.05 kJ

60 J0.06 kJ

70 J0.07 kJ

80 J0.08 kJ

90 J0.09 kJ

100 J0.1 kJ

200 J0.2 kJ

300 J0.3 kJ

400 J0.4 kJ

500 J0.5 kJ

600 J0.6 kJ

700 J0.7 kJ

800 J0.8 kJ

900 J0.9 kJ

1000 J1 kJ

2000 J2 kJ

3000 J3 kJ

4000 J4 kJ

5000 J5 kJ

6000 J6 kJ

7000 J7 kJ

8000 J8 kJ

9000 J9 kJ

10000 J10 kJ

100000 J100 kJ

hope it help u

itz by Riddhi

  the grams     of oxygen gas   that can be produced     is 20.6   grams of o₂

calculation

2liclo₃ →   2 licl + 3 o₂

step 1:   find the moles of liclo₃

moles = mass÷ molar mass

from periodic table the molar mass of liclo₃ =6.9 +35.5   +(16 x3) =90.4 g/mol

moles=38.7 g÷90.4 g/mol=0.4281   moles

step 2:   use the   mole ratio   to calculate the moles of o2

from equation above, liclo₃: o₂   is 2: 3  

therefore the moles of   o₂=0.4281 moles x3/2 =0.6422   moles

step 3: find mass   of o₂

mass= moles x molar mass

from periodic table the   molar mass of   o₂ = 16 x2= 32 g/mol

mass=0.6422   moles   x   32 g/mol = 20.6 grams of o₂