Estimate the value of the apparent contact angles (q*) for a composite interface formed by Water on an electrospun surface of PMMA + 44.1 wt% POSS.
The average fiber radius (R) = 500 nm and the average inter-fiber spacing (D) = 4.5 µm. The Young’s contact angle (q) for water on a spin-coated PMMA + 44.1 wt% POSS surface = 123°.
Also, compute the values of the two design parameters D* and A*. Note the capillary length (L cap) for water = 2.8 mm. Based on the value of A*, estimate the breakthrough pressure for water on this electrospun surface. Also, estimate the height of a column of water that would provide this breakthrough pressure.

11. Please indicate the type of oxide (acid, basic or amphoteric) that best describes each of the following compounds. Explain the reasoning for your selection.

a) MgO
b) SnO
c) CO₂
d) Al₂O₃

Note that this is an Inorganic Chemistry subject. Please answer in an organized matter. Use a legible handwriting so that the answers can be understood. Thanks in advance!

Given the following data, what is the value of ΔGf° (CH3OH(ℓ) at 25°C?

CO(g) + 2 H2(g) ⇄ CH3OH(ℓ)   K = 1.081 × 10-40

ΔGf°(CO) = -137.2 kJ/mol

9. Draw a picture of the following solid structures:
a) bcc
b) fcc
c) simple cubic
In each, determine the coordination number of a sphere in each of them.

Note that this is an Inorganic Chemistry subject. Please answer in an organized matter. Use a legible handwriting so that the answers can be understood. Thanks in advance!

6. The following species: O₂ (dioxygen), O₂^- (peroxide ion) and O₂^2- (superoxide ion) are known. Using the TOM, construct the OM energy diagram for each species. Based on them, organize them in increasing order of:

a) bond order
b) bond length
c) Bond dissociation energy

Note that this is an Inorganic Chemistry subject. Please answer in an organized matter. Use a legible handwriting so that the answers can be understood. Thanks in advance!

1 mL of a 5.0 nM enzyme solution is rapidly mixed into 9 mL of a 0.50 µM substrate solution, and the rate of formation of product is found to be 0.490 µM/s.

a) What are the initial concentrations of enzyme and substrate in the 10 mL mixture?

b) Calculate the Michaelis constant of the complex (KM), knowing that the rate of formation of product saturates to 0.670 µM/s when the experiment is performed with a highly concentrated substrate solution instead of the 0.50 µM substrate solution

Steam enters the high-pressure turbine of a steam power plant that operates on the ideal reheat Rankine cycle at 6 MPa and 500°C and leaves as saturated vapor. Steam is then reheated to 400°C before it expands to a pressure of 10 kPa. Heat is transferred to the steam in the boiler at a rate of 6*10⁴ kW. Steam is cooled in the condenser by the cooling water from a nearby river, which enters the condenser at 7°C. Show the cycle on a T-S diagram with respect to saturation lines, and determine

(a) the pressure at which reheating takes place,

(b) the net power output and thermal efficiency,

(c) the minimum mass flow rate of the cooling water required.

A gas-turbine power plant operates on the simple Brayton cycle with air as the working fluid and delivers 32 MW of power. The minimum and maximum temperatures in the cycle are 310 and 900 K, and the pressure of air at the compressor exit is 8 times the value at the compressor inlet. Assuming an isentropic efficiency of 80% for the compressor and 86% for the turbine, determine the mass flow rate of air through the cycle. Account for the variation of specific heats with temperature.

An ideal dual cycle has a compression ratio of 15 and a cutoff ratio of 1.4. The pressure ratio during constant-volume heat addition process is 1.1. The state of the air at the beginning of the compression is P₁ = 98 kPa and T₁ = 24°C. Calculate the cycle’s net specific work, specific heat addition, and thermal efficiency. Use constant specific heats at room temperature.

Steam saturated at 70 kPa is condensing on a ¾ in. Sch 40 vertical tube 1 ft. long and a surface temperature of 90 deg C. Calculate the average heat-transfer coefficient. Express your answer in AES units. (Note: Use the film-condensation coefficient for vertical surfaces)

100 litres each of gasoline (55°API), kerosene (40°API), gas oil (31°API), and isopentane (96 °API ) are mixed. The density of water at 288.5 K = 0.999 g/mL

. What is the specific gravity of the mixture in °API?