Physics, asked by akhi22, 1 year ago

the mass of steam at 100degress centigrade is to be passed into water of mass 100grams at 20degress centigrade to rise its temperature by 5degress centigrade

Answers

Answered by kvnmurty

The heat supplied by steam = latent heat + heat due to higher temperature at 100 deg.

$Let\ the\ mass\ of\ steam\ =\ m\ grams \\ \\ s\ =\ specific\ heat\ =\ 1\ cal/gram/deg C\ =\ 4.184 Joules/gram/deg C \\ \\ Heat\ lost\ by\ steam\ =\ Heat\ gained\ by\ cold\ water \\ \\ m\ grams\ *\ 2.26\ kJoules/gm +\ m\ 4.184 (100 - 25) deg\ C\ =\ 100\ gram \ *\ 4.184\ *\ 5\ deg\ C \\ \\ m\ *\ 2.26\ +\ 4.184\ *\ 75\ m\ =\ 100\ *\ 4.184\ *\ 5 \\ \\ m\ =\ 6.619\ grams\ of\ steam \\ \\$

akhi22: wheres the answer

akhi22: bt specific heat of water is 4.2 write

kvnmurty: 4.2 and 4.184 nearly same - this is from a manual i have taken. if u want to use 4.2 please do that.

Answered by afzalsd999

Answer:

3/4×16/9

(3×16)/(4×9)

48/36

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