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13. If a sample of 18 metal marbles has a total volume of 21.0 mL and a total mass of 20.7 grams, what is the density of the metal marbles?

Question

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13.	If a sample of 18 metal marbles has a total volume of 21.0 mL and a total mass of 20.7 grams, what is the density of the metal marbles?

anonymous · Answer

@physical.yogaling

anonymous · Answer

Do you know what density is?

anonymous · Answer

kinda

anonymous · Answer

Well then let me give you a definition for density and let me know if it helps.

The density of an object is the object's mass divided by the amount of space the object takes up (the object's volume).

anonymous · Answer

i tried that and got 0.98571428571428571428571428571429

anonymous · Answer

the opposite way gives 1.0144927536231884057971014492754

anonymous · Answer

@physical.yogaling

anonymous · Answer

You need to pay close attention to the units of measurement. Density is typically given in $$kg /m ^{3}$$ kilograms per cubic meters

anonymous · Answer

how do i change that in my calculator?

anonymous · Answer

You need a conversion factor (you can usually just google "how many kilograms in a gram").