Question

your experiment yielded 50kg of NaCl (D= 4.5g/ml. What volume of your yield is this in liters?

Answer 1

volume= mass/density.

watch units.

Answer 2

you can CHECK your answer here by pasting this in your google search window:

50kg/(4.5g/ml) in liters

Answer 3

Something to consider in handling of units:
1.00 g/mL = 1 g / 1 mL
1 g / 1 mL = 1000g / 1000mL = 1 kg / L
The above steps show that a density of 4.5 g/mL is equivalent to 4.5 kg/L.
Using a density of 4.5 kg/L should make it possible to get the volume in directly in liters without the need to change units at the end.