HESE 1411E Chapers4S, and 1. Idereryth. compound thet owest dtlusion ate aong th
ID: 1039972 • Letter: H
Question
HESE 1411E Chapers4S, and 1. Idereryth. compound thet owest dtlusion ate aong the wing -2 How many electrons are present insatta of . Caloulate the enengy required for an electron arstion from nes to n D 473X10-16 J E Neneofthr -5. What are the possale 1 values tor n-3 A)0, 1 8)0,1,2 C)0, 1,23D). 1, 2,3,4 E) 1, 2. 3 8. Consider the folowing balanced equation and caloulale the energy released when 4 mcles of ethane gas (CH 2CH+7O4CO6H.OH-3120 A) 3120kJ B)-8240k C)-7450 kJ D) 4360 kJ 7. Calculate the amount of heat necessary to raise the temperature of 12.0 g of water from 15 4 C to 93.0 C The specifie heat of water-4.184 Jig "C A) 0.027J 8)3249J C) 389J D) 93103 E) 3,898 8 What is the correct condensed electronic configuration for Stronitium? A) [Arj 5s D)?462 9 Which of the following atom has no electrons in d orbta? A) Sc 8) Pd C) I D) S E) KrExplanation / Answer
1.
Rate of diffusion is inversely proportional to molecular weight. Hence higher the molecular weight lwer is the rate of diffusion.
SO, Among the given (C) SO2 has higher molecualr weight (64 g.) and lower rate of diffusion.
2.
(E) Ba has 0 f electrons
3.
deltaE = 2.18 * 10-18 [ ( 1/ 32 ) - ( 1/52) ]
deltaE = 1.55 * 10-19 J
(C)
4.
(B)
5.
for given n value l = 0 to (n-1)
SO, for n= 3 , l = 0, 1 , 2
(B)
6.
(B) 3120 * 4 / 2 = 6240
7.
q = 12.0 * 4.184 * ( 93.0 - 15.4 )
q = 3896 J
(E)
8.
(B) [Kr]5s2
9.
(D) S
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