Chemistry
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New answer posted
7 months agoContributor-Level 10
13.49
2 A (g) → A? (g)
Δn_g = 1 - 2
Δn_g = 1
ΔH = ΔU + Δn_gRT
ΔH = -20 * 10³ + (-1)8.31 * 298
ΔH = -22477.572 J mol? ¹
ΔG = ΔH - TΔS
ΔG = -22477.572 - (-30)298 = -22477.572 + 8940
ΔG = -13537.57 J mol? ¹
New answer posted
7 months agoContributor-Level 10
Δ? > P
Pairing of electron will take place
Number of unpaired electron = 0
µ = 0.00
New answer posted
7 months agoContributor-Level 10
(A) Trans
(B) Cis
Optically inactive due to presence of plane of symmetry
Optically active no plane of symmetry
New answer posted
7 months agoContributor-Level 10
Boiling and clark's method (Ca (OH)? ) are used for removing temporary hardness. Whereas, calgon, sodium carbonate ion exchange method are used for removing permanent hardness.
New answer posted
7 months agoContributor-Level 10
Hydrogen peroxide has open book type structure. It is coloureless in free state
New answer posted
7 months agoContributor-Level 10
Zone refining is used to obtain high purity elements which are used in the manufacture of semiconductors. Boron and silicon both are used in semiconductors.
New answer posted
7 months ago
Contributor-Level 10
lnK = -E_a/RT + I
-E_a/R = slope is negative
⇒ -E_a/R = (10-0)/ (5-0)
E_a = 2R
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