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The value ∆H transition of C (graphite) → C (diamond) is 1.9 kJ/mol at 25℃ entropy of graphite is higher than entropy of diamond. This implies that?

Correct Answer:
C(graphite) → C(diamond) trans ∆H = 1.9 kJ /mole Sgraphite > Sdiamond As, Sgraphite is higher so C (graphite) is more stable. Diamond will provide more heat on complete combustion because it is more stable and have 3–D structure. C diamond → Cgraphite ∆Gtransition = -ve then process is spontaneous.

30°C তাপমাত্রায় নিম্নে প্রদত্ত তথ্য হতে PCI5(s) এর সংশ্লেষণ তাপ নির্ণয় কর। (i) 2P(s)+3 C12(g)→2 P C13(1); ∆H°=-734.96 KJmol  (ii) PC13(1)+C12(g)→C15(s); ∆H°=-147.96 KJmol 

Consider the given question and decide which of the following statements is sufficient to answer the question. What is the value of 14$20*8#4? Statements : 1. $ implies -, * implies +, # implies / 2. 14$20*8 = 25

L is older than M and taller than N. O is younger than P, older than N and shorter than Q. R is older than S, younger than N, shorter than S and taller than Q. S is older than L, M, O, P, Q, R and S is necessarily false?

Consider the following statements about emulsion SBR and solution SBR. I. Solution SBR has higher content of non-rubber materials than emulsion SBR II. Solution SBR has higher molecular weight but broader molecular weight distribution than emulsion SBR III. Solution SBR has higher cis-1,4-polybutadiene content than emulsion SBR Which of the following statements are true?

Price of a diamond is directly proportional to square of its weight. A man broke the diamond accidently in three pieces in the ratio of 3 : 5 : 7 and thusloses Rs 42600. What was the original price (in Rs) of the diamond?

Which of the following statements are CORRECT when a protein sequence database is searched using the BLAST algorithm?
P. A larger E-value indicates higher sequence similarity.
Q. E-value -10 indicates sequence homology.
R. A higher BLAST score indicates higher sequence similarity.
S. E-value > 10-10 indicates sequence homology.

___ implies greater than and ____ implies less than.

The entropy increase due to internal irreversibility is also called entropy production or entropy generation.

Entropy of dry-saturated vapor when Sf is 0.2513 and Sfg is 4.7878, is _______ Sf – Entropy of saturated liquid at pressure p Sfg – Entropy change during vaporization

Extra configurational entropy can also be introduced into the surface by the formation of surface vacancies. Entropy effects γ is slightly dependent on temperature and is given as, γ = -2T+2. Calculate the entropy S from the given condition?