Question

Explain all detailly pl​

Answer 1

Answer:

a) 49g of H2SO4 -  (S) 2 moles of O atom

[because one mole of H2SO4 has 4 moles of oxygen atom so half mole of H2SO4 will have 2 moles of O atom]

b) 20g NaOH  -    0.5 Moles of a given unit

[Because one mole of NaOH weighs 40g and half of it weighs 20g]

c) 11.2l of CO2 at STP  1.5NA atoms

[One mole of CO2 will contain 22.4liters which will have 3 moles of total atoms so half of that will contain 1.5 NA atoms]

d) 6.022 x 10^23 atoms of O2 -  (r) 0.5 NA molecules

[Because 2 atoms of Oxygen are required for one molecule]