A particle counter is used to count the particle emissions from a source. The count is $10,000$ particles

per second. Microscopy is used to determine that the particles are perfect cubes in shape, with sizes of

$25nm($measured on one side of the cube$).$ Chemical analysis shows the composition of the particles is

NaCl. Determine a mass emission rate from this source $($e$.$g$.$ g$/$min$).$ Document all your assumptions.