Question

If Avogadro number N_A, is changed from 6.022 × 10²³ mol^-1 to 6.022 × 10²⁰ mol^-1, this would change

(a) the mass of one mole of carbon

(b) the ratio of chemical species to each other in a balanced equation

(c) the ratio of elements to each other in a compound

(d) the definition of mass in units of grams.

Answer 1

Answer - (a) the mass of one mole of carbon

 

Solution - avagadro no = 6.023 x 10²³ , i,e the no. of carbon atoms in 1 mole of C 

i,e 1 mole =  6.023 x 10²³  atoms = 12g of C

thus, 6.023 x 10²⁰  atoms =$12\times{6.023\times10^{20}\over6.023\times10^{23}}$

                                               = 0.012g