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Suleiman

Questions (6)

Construct a triangle KLM,if kl=8cm,lm=10cm and km=6cm.measure the largest angle of the triangle.
1. 3 answers
2. 618 views
A piece of copper of mass 400g at the temperature of 1000°c is quickly transferred to a vessel of negligible thermal capacity
1. 3 answers
2. 652 views
The irreversible elementary reaction 2A ---+ B takes place in the gasphase in an isothermal tubular (plug-Jlow) reactor.
1. 4 answers
2. 1,354 views
what is the R.F of 2.5cm to 4cm?
1. 4 answers
2. 427 views
The 90 members of a sport club play at least one of the games,tennis,football and volleyball. 10 play tennis and football,19
1. 2 answers
2. 903 views
The 90 members of a sports club play at least one of the games,tennis,football and volleyball. 10 play tennis and football,19
1. 4 answers
2. 2,652 views

Answers (3)

Yes
Answer
From Arhenius Equation ln(k1/k2)= Ea/R((T1-T2)/(T1T2)) The ratio of rate constant is 1:3; R= 8.314JK.mole T1=288K T2=308K So; ln(1/3)=Ea/8.314((288-308)/(288x308)) Ea=4.05x10⁴J or 4.05x10¹Kj

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