3. Low density polyethylene (LDPE) is produced in a long tubular reactor under harsh conditions (T = 200 °C and 1800 bar). Ethylene is pressurized, mixed with catalyst, and pumped into the reactor where (LDPE) is produced. The reactor itself is 0.5 m in diameter and 1800 m in length. Hint: the following equations may help you. m=vp and v=u-A Where in is the mass flow rate in kg/s, V is the volumetric flow rate in m³/s, p is the fluid density in kg/m³, u is the average fluid velocity in m/s, and A is the cross sectional area in m². a) What phase is the ethylene? How can you tell? b) If the flow rate of ethylene at the beginning of the reaction (i.e. when conversion is 0) in the reactor is 2.0 m/s, determine the mass flow rate in kg/s.

What amount of heat is required to convert 10.0 g of water at 80.0 °C to steam at 100.0 °C? (heat capacity of water = 4.184 ;    ∆Hvap = 2300 )

This is an open system with constant height and velocity. Put 100 kmol/s of H2 (H = 5141 kJ/kg) and 50 kmol/s of O2 (H = 4365 kJ/kg)in the system and let them react to form 100 kmol/s of H2O (H = 4929 kJ/kg).How much heat was added to the system to perform this reaction?

I have few minutes left please answer ASAP I will give like

A chemical engineer is studying the two reactions shown in the table below. In each case, she fills a reaction vessel with some mixture of the reactants and products at a constant temperature of 100.0 °C and constant total pressure. Then, she measures the reaction enthalpy AH and reaction entropy AS of the first reaction, and the reaction enthalpy AH and reaction free energy AG of the second reaction. The results of her measurements are shown in the table. Complete the table. That is, calculate AG for the first reaction and AS for the second. (Round your answer to zero decimal places.) Then, decide whether, under the conditions the engineer has set up, the reaction is spontaneous, the reverse reaction is spontaneous, or neither forward nor reverse reaction is spontaneous because the system is at equilibrium. AH = 181. kJ J AS = 530. K N, (g) + 0,(g) → 2NO(g) AG = ||| kJ Which is spontaneous? this reaction the reverse reaction neither AH = 92. kJ J AS = K 2N H, (g) → N, (g) + 3H, (g) AG…

Solve the following exercise: There is a solution of organic colloids, which is concentrated in water from 12% to 47% in a simple effect evaporator. The water vapor is at a pressure of 150 kPa and the pressure in the evaporator is 13.60 kPa. The feed rate to the evaporator is 12300 kg/h. The overall heat transfer coefficient is taken to be 1600 W/m2 °C. The solution has negligible boiling point elevation. Calculate the heating surface required if the feed temperature is 27.3 °C, plus the steam consumption. The feed heat capacity is 3.2 kJ/kg*K. 12300kg/h Tf 12%solids Ts Pman=150kPa F s T1 P1=13.60 kPa S L 47% solids

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The gas phase reaction A → 2R + ½S is carried out in a tubular reactor with the following reaction and reactor conditions:(i) Reaction = First Order;(ii) Reactor Dimensions: diameter = 50 cm and length = 6 m;(iii) Power is made from the introduction of a single power currentwith 60% by weight of A and 40% by weight of aggregate;(iv) Global feeding of 400 mol/hour;(v) Feed current conditions: temperature of 25°C and pressure of 4 atm;(vi) Reactor temperature = 200 °C;(vii) Conversion obtained: 75%;(viii) Molecular Weights: Reagent A = 38 g/gmol; inert = 28 g/gmol.What is the volume of a mixing reactor operating under the same feed conditions as the tubular reactor and at the same conversion?

What is the primary difference between enzymatic and non-enzymatic reactions in chemical engineering? a) Enzymatic reactions involve catalysts, while non-enzymatic reactions do not. b) Enzymatic reactions are slower compared to non-enzymatic reactions. c) Enzymatic reactions are reversible, while non-enzymatic reactions are irreversible. d) Enzymatic reactions require higher temperatures and pressures compared to non- enzymatic reactions.