The student then emptied the flask and dired it once again. To the empty flask h

Question

The student then emptied the flask and dired it once again. To the empty flask he added pieces of a metal until the flask was bout half full. He weighed the stoppered flask containing the metal and found that its mass was 100.356g. Next, he filled the flask containing the metal with water, stoppered it, reweighed it and obtained a total mass of 121.860g.

a.) Find the mass of the metal in the flask 67.722g

b.) Find the mass of water in the flask. 21.504g

c.) Find the volume of water in the flask. (show work)

d.) Find the volume of metal in the flask. (show work)

e.) Find the density of the metal. (show work)

Explanation / Answer

empty weight of flask = 32.634g

mass of flask + metal = 100.356g

so

mass of metal = 100.356-32.634 = 67.722

mass of metal = 67.722g

mass of flask +metal+water = 121.860g

so

mass of only water = 121.860 - 100.356 =21.504

mass of only water =21.504g

since half volume is occupied by metal , the other half is occupied by water

let volume of flask = V

volume of water =V/2

density of water = 1g/cc

mass/volume =1

21.504 /volume =1

volume =21.504cm3

volume of water = 21.504cm3

V/2 =21.504

V = 43.008cm3

volume of flask = 43.008cm3

volume of metal in flask = V /2 = 21.504cm3

volume of metal in flask =21.504cm3

density of metal = mass /volume = 67.722/21.504 = 3.149g/cc

density of metal = 3.149g/cm3

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