How many atoms are in 0.05 moles of xenon gas at stp?

2.2 x 10^23

3.0 x 10^22

6.0 x 10^23

3.0 x 10^24

Option (b) is the correct answer.

Explanation:

According to the mole concept there are atoms present in 1 mole of a substance.

Mathematically,    1 mole = atoms or molecules

Therefore, number of atoms present in 0.05 moles of xenon are as follows.

                   = atoms

or,                = atoms

Thus, we can conclude that there are atoms present in 0.05 moles of xenon gas at STP.

b. th3 n4zc4 pl4t3 15 c0nv3rg1ng w1th the s0uth 4m3ric4n pl4t3.

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