1. A 24.50 g piece of metal displaces 2.6 ml of water. Calculate the density of the

metal?

9.42g/cm3

Explanation:

Data obtained from the question include the following:

Mass of the metal = 24.50g

Volume of metal = 2.6 ml = 2.6cm3

Density =..?

The density of a substance is defined by the mass of the substance per unit volume of the substance. It is represented mathematically as:

Density = Mass /volume

With the above formula, we can obtain the density of the metal as follow:

Density = Mass/volume

Density = 24.50g/2.6cm3

Density = 9.42g/cm3

the answer is 303.15 or 303

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