Question

Find the density of an unknown metal.
Data: 1: the mass of flask and stopper: 67.971g
2: the mass of flask, stopper, and metal: 83.857g
3: the mass of flask ,water, and stopper:118.757g
4: the mass of flask, stopper, metal, and water: 133.932g
5: temperature of water: 27 degree
6: unknown number: Tungsten (W)

Answer 1

Mass of metal=mass of flask, stopper, and metal - the mass of flask and stopper=83.857g - 67.971g=15.886 g=M

Mass of water(when only water is present in the flask)= mass of flask ,water, and stopper - the mass of flask and stopper=118.757g - 67.971g =50.786 g=M2

Mass of water (when metal is also prsent)=mass of flask, stopper, metal, and water - the mass of flask, stopper, and metal=133.932g -  83.857g= 50.075 g=M1

so the volume of the metal will corresponding to the mass of water decreased

so volume of metal=M2-M1/density of water=50.786-50.075=0.711 cm³

So the density of metal =M/0.711=15.886/0.711=22.34318 g/cm³