How many acetone molecules are in a bottle of acetone with a volume of 445 ml ? (density of acetone = 0.788 g/cm3).

The answer is:

First, we need to calculate the molecular weight of the acetone (CH3COCH3)

So,

Then,

Second, we need to calculate the mass of the acetone in the bottle

We need to remember that

So,

Third, we need to calculate the number of moles:

Fourth, we need to calculate the number of atoms:

Remember,

Therefore,

Have a nice day!

2b2t

explanation:

2b2t

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