24 and 25 ques

Asked by lovemaan5500 | 26th Nov, 2017, 12:45: PM

Expert Answer:

Heat gain by water = mw × Cp × (80-30)
Heat Loss by Steam = ms × L + ms ×Cp × (100-80) 
 
whrere mw is mass of water, Cp is sp.heat of water, ms is mass of steam, L is latent Heat of vaporaisation of steam.
 
Heat gain = Heat loss
 
mw × Cp × (80-30) = ms × L + ms ×Cp × (100-80)
 
begin mathsize 12px style m subscript s equals space fraction numerator m subscript w cross times C p space cross times 50 over denominator L plus C p cross times 20 end fraction end style
Substitute the values for mw, Cp and L and workout for ms
 
I got the final answer as ms = 0.756 kg
 
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Answered by  | 27th Nov, 2017, 03:12: PM