ou have volunteered to decorate the gym for your son\'s birthday p helium balloo
ID: 705765 • Letter: O
Question
ou have volunteered to decorate the gym for your son's birthday p helium balloons. You found a store that will rent a 25-L helium tank filled with nellum gas at a pressure of SU.Uam. tacn Dalloon wnen tilled, noas &L; 01 nelum at a pressure of 1.04atm. Assuming that tne temperature remains constant, wili one tank be enougn to riil aii s00 bailoons? it not, now many tanks will be needea: How many bailoons can be fillea by the 25-L neirum tank? 5. ine element beryliium is a reiatively unreactive steei-gray metai with a specitic neat OI l. /g x u. How many joules ol neat energy must 24.Ug ot beryllium metal aDsoro ror its temperature to ncrease trom 23? to 33?! CHM 105 EXAM3Explanation / Answer
ANSWER 3 :-
heat energy change= specific heat * mass * temperature change,
Using above formula we will calculate as :-
heat energy change= 1.8J/ gXC X 24.0g X (55-25)C =1296J
=1300 J (approx)
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