Question

एक आदमी 9 से० में 270 मी० लम्बी सड़क को पार करता है। आदमी की चाल किमी/घण्टा में ज्ञात की​

Answer 1

Answer:

I don't know

Step-by-step explanation:

· It is the number of particles in a single mole of a material, based on the number of atoms in exactly 12 grams of the isotope carbon-12. Although this number is a constant, it's experimentally determined, so we use an approximate value of 6.022 x 1023.