**Definitions:**

**Metric Tonne** (abbreviations: **metric ton, or metric tons, or ton, or tons**): is a SI metric unit of mass, also known as tonne. Although, it is used principally as a unit of mass, it has acquired a number of meanings and uses over long years. It is equivalent to 1,000 kilograms (Kg), or one megagram (Mg), or approximately 2,204.6 pounds (lb), or 1.10 short tons (US), or 0.984 long tons (imperial).

**Atomic Mass Unit** (abbreviations: **amu, or u**): also known as dalton (symbol: Da), is a standard unit of mass that used on an atomic or molecular scale (atomic mass). One unified atomic mass unit is about the mass of one nucleon (either a single proton or neutron) and equivalent to 1 g/mol.

## How to Convert Metric Tonnes to Atomic Mass Units

*Example: How many atomic mass units are equivalent to 75.81 metric tonnes?*

As;

1 metric tonnes = 6.024E+29 atomic mass units

75.81 metric tonnes = Y atomic mass units

Assuming Y is the answer, and by criss-cross principle;

Y equals 75.81 times 6.024E+29 over 1

(i.e.) Y = 75.81 * 6.024E+29 / 1 = 4.5667944E+31 atomic mass units

Answer is: 4.5667944E+31 atomic mass units are equivalent to 75.81 metric tonnes.

*Practice Question: Convert the following units into amu:*

N.B.: After working out the answer to each of the next questions, click adjacent button to see the correct answer.

( i ) 77.95 ton

( ii ) 0.38 ton

( iii ) 27.27 ton