Questions by FerminRosale

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1 answer 74 views

What is the effect of metal ion coordination on the electronic and spectroscopic properties of metalloporphyrins and metallophthalocyanines?

asked Feb 19 in Coordination Chemistry

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1 answer 110 views

How can the synthesis and characterization of a new material be optimized for maximum efficiency in removing heavy metals from polluted water sources?

asked Feb 11 in Materials Chemistry

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1 answer 128 views

How can the process for the production of phosphorus-based fertilizers be optimized for maximum yield and minimum waste?

asked Feb 10 in Chemical engineering

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1 answer 147 views

Design a heat exchanger for a chemical process that requires heating of 50 kg/hr of water from 25°C to 80°C using steam as the heating medium. The available steam is at a pressure of 1.5 MPa and a temperature of 300°C. The overall heat transfer coefficient between the water and the steam is 600 W/m2K. The heat exchanger should be designed to accommodate a temperature drop of 5°C for both the water and the steam. Determine the required surface area of the heat exchanger and the mass flow rate of steam required to meet the process requirements.

asked Feb 4 in Chemical engineering

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1 answer 80 views

Calculate the Gibbs free energy change (∆G) for the combustion of methane, CH4(g) + 2O2(g) -> CO2(g) + 2H2O(l), at standard conditions (298 K and 1 atm pressure) using appropriate thermodynamic data.

asked Jan 23 in Chemical thermodynamics

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1 answer 91 views

Calculate the bond dissociation energy (in kJ/mol) for the breaking of the carbon-hydrogen (C-H) bond in methane (CH4), given the following information: CH4 (g) → CH3 (g) + H (g) ∆H = 432 kJ/mol Note: The bond dissociation energy is the amount of energy required to break a bond between two atoms in a molecule, resulting in two separate atoms.

asked Jan 23 in ThermoChemistry

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1 answer 126 views

A chemical engineer wants to separate a mixture of ethanol and methanol using a distillation column. The feed to the column contains 30% ethanol and 70% methanol by mole. The engineer wants to obtain a distillate with 80% ethanol and a bottoms product containing no more than 1% ethanol. Determine the number of trays required in the distillation column to achieve this separation. Consider only equilibrium stages and assume that the feed is saturated liquid at its boiling point. The operating pressure of the column is 1 atm.

asked Jan 22 in Chemical engineering

0 votes

1 answer 78 views

What is the oxidation state of nitrogen in N2O5?

asked Jan 21 in Inorganic Chemistry

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1 answer 99 views

Determine the oxidation state of the central atom in the compound [Fe(CN)6]4-.

asked Jan 21 in Inorganic Chemistry

0 votes

1 answer 100 views

What is the name of the theory that suggests that our behaviour can be explained by examining the functions it serves?

asked Jan 20 in Psychology

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1 answer 128 views

What is scaffolding according to Vygotsky?

asked Jan 20 in Psychology

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1 answer 122 views

Who proposed the idea of reinforcement learning?

asked Jan 20 in Psychology

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1 answer 173 views

Who developed the Social-Ecological Model of Trauma Recovery?

asked Jan 20 in Psychology

0 votes

1 answer 81 views

What is the definition of prejudice?

asked Jan 15 in Psychology

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1 answer 48 views

What is the difference between 'classical conditioning' and 'operant conditioning'?

asked Jan 14 in Psychology

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1 answer 114 views

What is the definition of end-of-life psychology?

asked Jan 14 in Psychology

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1 answer 72 views

What is a p-value?

asked Jan 14 in Psychology

0 votes

1 answer 83 views

What is attention switching?

asked Jan 14 in Psychology

0 votes

1 answer 104 views

What tube carries urine out of the body?

asked Jan 8 in Science

0 votes

1 answer 134 views

What is the ratio of a wave frequency to its vibration frequency?

asked Jan 7 in Science

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