Question

What is the mass of 2.5×10^23 atoms of nitrogen

Answer 1

Answer:

Explanation:

number of ATOMS = moles × Na (avogadro's no.)

       2.5×10²³  =  6.022 × 10²³  × moles

MOLES = 0.41 mol

moles= mass/molar mass

         

0.41= mass/14

mass = o.41 × 14

= 5.74 g