Explanation:
Carbon dioxide isn't a polar molecule because
same nature of charge appears in opposite direction which cancel each other. So, carbon dioxide is non-polar molecule.
Answer:
The answer is TRUE!!!
Explanation:
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Answer:
Explanation:
Given reaction
N₂H₄ + O₂ ⇒ N₂ + 2H₂O ΔH₁ = -543 KJ ---------- ( 1 )
2H₂ + O₂ ⇒ 2H₂O ΔH₂ = -484 KJ ---------- ( 2 )
N₂ + 3 H₂ ⇒ 2NH₃ ΔH₃ = -92 KJ -----------( 3 )
( 1 ) - ( 2 ) +( 3 )
N₂H₄ + O₂ - 2H₂ - O₂ +N₂ + 3 H₂ ⇒ N₂ + 2H₂O - 2H₂O +2NH₃
ΔH = -543 + 484 -92 = -151 KJ
N₂H₄ + H₂ ⇒ 2NH₃ ΔH = -151 KJ .
2NH₃ ⇒ N₂H₄ + H₂ ΔH = + 151 KJ
These are terms that we use in physics
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