**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.

**Pound** (abbreviations: **lb, or lbs, or ps**): is a unit of force used in some systems of measurement including English Engineering units and the British Gravitational System. Also, it is a unit of mass used in the imperial, United States customary and other systems of measurement.

## How to Convert Atomic Mass Units to Pounds

*Example: How many pounds are equivalent to 42.93 atomic mass units?*

As;

1 atomic mass units = 3.66E-27 pounds

42.93 atomic mass units = Y pounds

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

Y equals 42.93 times 3.66E-27 over 1

(i.e.) Y = 42.93 * 3.66E-27 / 1 = 1.571238E-25 pounds

Answer is: 1.571238E-25 pounds are equivalent to 42.93 atomic mass units.

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

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

( i ) 38.9 amu

( ii ) 94.12 amu

( iii ) 50.39 amu