# kg

kilograms.

## Related Terms

### FREIGHT TON

The greater weight or measurement of goods where 1 tonnes is either 1,000 kg or 1 cubic meter.

### MOLE

The amount of substance. Mass that is numerically equal to the molecular mass. It is most frequently expressed as the gram molecular mass (g mole) but may also be expressed in other mass units, such as the kg mole. At the same pressure and temperature the volume of one mole is the same for all ideal gases. It is practical to assume that petroleum gases are ideal gases.

### SPECIFIC HEAT

This is the quantity of energy in kilojoules required to change the temperature of 1 kg mass of the substance by 1 °C. For a gas the specific heat at constant pressure is greater than that at constant volume.

### DISPLACEMENT AS A MASS

This equals the quantity of water displaced and as the kilogram is the unit of mass and 1000 kg = 1 tonne this is the unit which is used when referring to the size of a ship.

### K.G.

The height of the vertical centre of gravity above the keel or base line.