Which 5.0 milliliter sample of NH will take the shape of and completely fill a closed 100.0 milliliter container?

To completely fill a closed 100.0 milliliter container, you would need a gas sample of NH (ammonia). Since gases expand to fill their containers regardless of the volume, any 5.0 milliliter sample of gaseous NH will take the shape of and fill the 100.0 milliliter container. The properties of gases allow them to occupy the entire volume available, so the specific volume of the original sample does not restrict its ability to fill the larger container.