The density of ammonia gas under certain conditions is 0.625 g/l. calculate its density in g/cm3.

From the conversion of units:

1 cm^3 is equivalent to 1 mL

1 L is equivalent to 1000 mL

therefore,

to convert from liter to cm^3, we simply multiply by 1000.

Note that the multiplication will be done in the denominator.

Based on this:

density = (0.625 g/l) x (1g/1000 cm^3) = 0.000625 g/cm^3

= 6.25 x 10^-4 g/cm^3