CHEMICAL ENERGY BALANCE - EXAMPLE 11.2 : Calculate the cooling duty, H required to condense and cool acetone from 100 degree Celsius to 25 degree Celsius at atmospheric pressure. The heat of vaporization for acetone at its normal boiling point is 30.2 kJ / mol. The boiling point of acetone at atmospheric pressure is 56 degree Celsius. The flowrate of acetone through the condenser is 100 mol / s = N. Value of sensible heat needed to increase the temperature of acetone in liquid form from 25 to 56 degree Celsius is 4.06 kJ / mol. Value of sensible heat needed to increase the temperature of acetone in vapor form from 56 to 100 degree Celsius is 3.82 kJ / mol. Unit of H is kJ / s.
1 1607CHEMICAL ENERGY BALANCE - EXAMPLE 11.3 : For liquid benzene, the CP constants are : a = 129440, b = - 169.5, c = 0.64781. Reference temperature is 298 K. The temperature of benzene is 60 degree Celsius. Calculate the enthalpy of benzene by using the formula H = a (DT) + (b/2) (T^2 - TREF^2) + (c/3) (T^3 - TREF^3) where ^ is power, DT is temperature difference with TREF = 298 K. H is in J / kmol. DT = T - TREF.
1 2237Question 103 - (a) Let | - > = 1 | x > + 0 | y >, | | > = 0 | x > + 1 | y >. Find the value of 2 | x > + 3 | y > in term of | - > and | | >. (b) Let m to be the reduced mass. Find the value of m in term of Ma and Mb where 1 / m = 1 / Ma + 1 / Mb.
1 1775How to Calculate Transformer Earthing Electrode Rod Size both Body and neutral Earthing ? Any Standard Formula? Please Suggted
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1) a)to prepare mortar for bricklaying how much amount of water should be added for its maximum strength and workability(to avoid cracks which results, when high quantity of water is added)?is their a formula or ratio? b) suppose we want to make 1:3 mortar,what is the best way to measure cement ,sand and water and how? c)time before which freshly prepared mortar should be used? d)proper way to mix and make mortar? e)when should curing start after laying bricks and for how long?and also how many hours per day? f)what is shear wall (please in terms of layman lol) bookish definisions are confusing.... g) and last,acc to codes what are max no. of course that should be laid in a day.
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