A student obtained a clean, dry, glass-stoppered flask. He weighed the flask stopper and found the total mass to be 32.634g. He then filled the flask with water, weighed again, and obtained a mass of 59.479g. At the temperature of the water, he found that its density was 0.9973 g/mL. a.) What was the mass of the water? (show work)b.) What was the volume of the water? (Show work)c.) What was the volume of the flask? (show work)

Answer :

The mass of water is, 26.845 g

The volume of water is, 26.92 mL

The volume of flask is, 26.92 mL

Explanation : Given,

Mass of flask stopper = 32.634 g

Mass of water and flask stopper = 59.479 g

Density of water = 0.9973 g/mL

First we have to calculate the mass of water.

Mass of water = Mass of water and flask stopper - Mass of flask stopper

Mass of water = 59.479 g - 32.634 g

Mass of water = 26.845 g

Thus, the mass of water is, 26.845 g

Now we have to calculate the volume of water.

Thus, the volume of water is, 26.92 mL

Now we have to calculate the volume of flask.

Volume of flask = Volume of water = 26.92 mL

when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml

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