1.

368 g NO2 gas is given. Find the answers of each one given below, a. GMM of NO2 b. Number of moles of molecules of 368 g NO2 c. Number of molecules d. Number of atoms e. Volume in STP

Answer»

a. GMM of NO2 

= 14 + 2 × 16 = 46 g 

b. Number of mole = \(\frac{368}{46}\) = 8

c. Number of molecules = Number of moles × NA = 8 × 6.022 × 1023

d. Number of atoms = Number of atoms in one molecule × Number of molecules = 3 × 8 × 6.022 × 1023 = 24 × 6.022 × 1023

e. Volume in STP = Number of moles × 22.4 L = 8 × 22.4 L = 179.2 L



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