Asked by becca

An unknown metal has a volume of 20cm^3 and a mass of 54g. What is the likely identity of the unknown metal?

could i please have some help with this? ur help is appreciated. :D

Answered by DrBob222
mass = density x volume
You know volume and mass, calculate density. Then look up in a table and this probably is a common metal such as lead, gold, copper, iron, aluminum, etc. Your text probably has such a table or I can find one on the web.
Answered by becca
if i already know the volume and mass, wouldnt i be calculating the density?because u put mass = density x volume
Answered by DrBob222
Yes, you would be calculating the density. Since mass = volume x density, that can be rearranged to
density - mass/volume. Just plug in the mass and the volume to determine density, then use tables to identify the metal.
Answered by becca
oh, sorry :P
so d = m x v
d = 20cm^3 x 54 g
d = 1080 ?
what would be the unit of measure for this?:S

Answered by DrBob222
No. Density = mass/volume. The unit you have calculated is g*cc but if you substitute correctly the units will be g/cc.
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