The density of liquid oxygen at its boiling point is 1.14 kg/L , and its heat...

3.5 Ratings (626 Votes)

mass of oxygen liquid = D*V

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â = 1.14*2 = 2.28 Kg

DHvapourisation = 213 Kj/kg

Amount of heat absorbed = DHvap * m

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â = 213*2.28

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â = 485.64*10^3 joule.

Water's heat of fusion = 80. cal/g

specific heat = 1.0 cal/gâ‹…âˆ˜C .

mass of water = 1400 grams

Heat absorbed (q) = 1400*1*(32-0)+1400*80 = 156800 cal

Â Â Â Â Â Â Â Â Â Â Â Â = 1.6*10^5 cal

3.
Water heat of fusion = 80. cal/g

specific heat = 1.0 cal/gâ‹…âˆ˜C .

water heat of vaporization = 540 cal/g

Heat absorbed (q) = mice*DHfus + mwater*s*DT + m*DHvap

Â Â
Â Â Â Â Â Â Â Â Â Â Â Â = 390*80 + (390+100)*1*(100-0)+490*540

Â Â Â Â Â Â Â Â Â Â Â Â = 3.4*10^5 cal

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