chemistry

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a piece of iron measures 10.5cm by 5.25cm by 10.2mm and the density of theiron is 7.86g/cm cubed. what is the mass of the iron?

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Convert 10.2mm to cm:

10.2mm*(10^-1cm/1mm)=10.2 x 10^-1 cm

Find the volume of the cube:

(10.5cm)*(5.25cm)*(10.2 x 10^-1 cm)=volume of cube

Density=mass/volume

Solve for mass:

Density*Volume=mass

7.86g/cm^3*Volume of cube=mass

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