Question

calculate the number of moles of nh3 present in 20×10²⁰ molecules of nh3 (jisne bhi faltu ka answer diya tmkb) ​

Answer 1

Step-by-step explanation:

1 mole of NH3 contains = 6.022 × 10²³ molecules

1 molecule of NH3 is = 1/6.022×10²³ moles

20×10²⁰ molecules of NH3 =

=1/6.022×10²³ × 20×10²⁰ moles

= (1×20×10²⁰)/6.022×10²³ moles

= 3.321×10-³ moles

= 0.003321 moles