Transpirational water flow in the xylem requires a mechanically strong wall that resists from,

TLS Online TPP Program

#Question id: 40801

#Section 5: Bioprocess Engineering and Process Biotechnology

A first-order reaction is 50% complete in 40 minutes. Calculate the time required for the reaction to reach 79% completion.

TLS Online TPP Program

#Question id: 40802

#Section 5: Bioprocess Engineering and Process Biotechnology

The rate constant for a first-order reaction is 4.606×10⁻³ s⁻¹. How much time is required for the initial reactant concentration to drop from 2.0 M to 0.2 M?

TLS Online TPP Program

#Question id: 40995

#Section 5: Bioprocess Engineering and Process Biotechnology

Q. A rigid tank is being filled with hot water. During the process, 4 kg of water enters the tank with a specific enthalpy of 250 kJ/kg. The tank loses 50 kJ of heat to the surroundings. No water leaves the tank and no shaft work is done.

The energy accumulated inside the tank is:

TLS Online TPP Program

#Question id: 40996

#Section 5: Bioprocess Engineering and Process Biotechnology

Q. Steam flows through a heat exchanger. 8 kg of steam enters with a specific enthalpy of 320 kJ/kg and leaves with a specific enthalpy of 250 kJ/kg. During the process, 100 kJ of heat is supplied to the heat exchanger. No shaft work is involved.

The energy accumulated inside the heat exchanger is:

TLS Online TPP Program

#Question id: 40997

#Section 5: Bioprocess Engineering and Process Biotechnology

Q. An air compressor fills a rigid storage tank. 5 kg of compressed air enters the tank with a specific enthalpy of 300 kJ/kg. During filling, the tank loses 40 kJ of heat to the surroundings. There is no outlet flow and no shaft work.

The increase in stored energy inside the tank is:

TLS Online TPP Program

#Question id: 40999

#Section 5: Bioprocess Engineering and Process Biotechnology

Q What is the enthalpy of 150 g formic acid at 70°C and 1 atm relative to 25°C  and 1 atm? (Cp for formic acid is 0.524 cal g-1 °C-1)