Answer:
2.5593723 x 10²⁷g
Explanation:
Mass of 1 mole of chlorine is 35.5
Therefore, mass of one atom of chlorine is
(35÷6.022×10^23) = 5.895 × 10^-23
35.5g of CL = 5.895 × 10^-23 atoms
x= 4250atoms
cross multiply
x = (4250x35.5)/5.895 × 10^-23 atoms = 150875/5.895 × 10^-23 = 2.5593723 x 10²⁷
