Steam can cause more serious burns than water at the same temperature. Here we examine this...

Steam can cause more serious burns than water at the same temperature. Here we examine this effect quantitatively, noting that flesh becomes badly damaged when its temperature reaches 50.0

Solutions

Expert Solution

1 heat released by water = mH2O x specific heat of water x delta(T)

= 14.7 x 4.18 x 50 = 3072.3 J

2 heat released by steam = heat relesed during conversion to water + heat released while cooling down

= msteam x latent heat of vaporisation + m x specific heat x delta(T)

= 14.7 x 2257+ 14.7 x 4.18 x 50

= 33177.9 +3072.3

= 36250.2

3 heat released = m fleshx specific heat of flesh x delta(T)

m flesh = heat released/(3000 x 13)

a . mflesh = 3072.3/39000 = 0.07877kg = 78.77grams

b .mflesh = 36250.2/39000 = 0.92949 =929.49 grams

genius_generous answered 1 year ago

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