**Definitions:**

**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.

**Long Ton** (abbreviations: **Lton, or ton imperial**): is a non-SI metric unit of mass. 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 1,016 kilograms (Kg), or approximately 2,239.859 pounds (lb), or 1.119929 short tons (US), or 1.016 metric tons.

## How to Convert Atomic Mass Units to Long Tons

*Example: How many Long tons are equivalent to 73.8 atomic mass units?*

As;

1 atomic mass units = 1.6338097609562E-30 Long tons

73.8 atomic mass units = Y Long tons

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

Y equals 73.8 times 1.6338097609562E-30 over 1

(i.e.) Y = 73.8 * 1.6338097609562E-30 / 1 = 1.2057516035857E-28 Long tons

Answer is: 1.2057516035857E-28 Long tons are equivalent to 73.8 atomic mass units.

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

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

( i ) 17.06 amu

( ii ) 63.41 amu

( iii ) 56.41 amu