Revision.my

a = \frac{v - u}{t} a = \frac{36 - 0}{8} = 4.5 m s^{- 2}

$a=\frac{v-u}{t}$

$\textup{Bilangan mol karbon}= \frac{4g}{12gmol^{-1}}= \frac{1}{3} mol$

$\textup{Jumlah haba dibebaskan}=\frac{1}{3}\times 393.5kJ=131.2kJ$

$= \frac{140kJ}{560kJmol^{-1}} = 0.25mol$

$n=\frac{MV}{1000}$

$n = \frac{(0.2)(50)}{1000} = 0.01 mol$

H a b a P e m b a k a r a n = \frac{K u a n t i t i h a b a d i s e r a p o l e h a i r}{B i l a n g a n m o l b a h a n a p i t e r b a k a r}

n = \frac{J i s i m h e p \tan a}{J i s i m m o l a r h e p \tan a} n = \frac{1.71}{100} = 0.0171

∆ H = \frac{J u m l a h h a b a y a n g d i s e r a p o l e h a i r}{K u n t i t i b a h a n a p i t e r b a k a r} ∆ H = \frac{75000 J}{0.0171} ∆ H = 4386 k J / m o l