Question

UJI TUTUMLULU UCLUJIPUTULIVUI LULU 101 ULIO. A sample of gaseous helium is heated with an electrical coil. If 1340 Joules of energy are added to a 14.3 gram sample and the final temperature is 38.2°C, what is the initial temperature of the helium? Answer: 1°C.

Answer 1

for Soleing both the Ouetions &fecific heat mut be roun Let Ste is efecific Auat of Hebum in Jgmc and Ti initoal temperatue then SiG Heat absorbd msAT 1340-4.3)(SHe(38-2-7) ict SHe fram Youe data table and Get the leaue 4.t mass in gm 1 specific Riat in J/m Let firal tempuatue ie TC Shen, 2 143- (3Xct)(T-al.s) Put Sei from Youe data table ard Get T in