Reliability is a concept that should be understood in the development of systems. Discuss the difference between series and parallel (redundant) networks and how such networks can increase or decrease total reliability of the system.

Discuss the FMECA process its components, purpose and how it relates to system reliability.

Maintainability and maintenance are important and related to each other. Describe each and the relationship to each other.

The small bubbles that form on the bottom of a water pot that is being heated (before boiling) are due to dissolved air coming out of solution.

Part A

Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.1 L of water upon warming from 25 ?C to 50 ?C. Assume that the water is initially saturated with nitrogen and oxygen gas at 25 ?C and a total pressure of 1.0 atm. Assume that the gas bubbles out at a temperature of 50 ?C. The solubility of oxygen gas at 50 ?C is 27.8 mg/L at an oxygen pressure of 1.00 atm. The solubility of nitrogen gas at 50 ?C is 14.6 mg/L at a nitrogen pressure of 1.00 atm. Assume that the air above the water contains an oxygen partial pressure of 0.21 atm and a nitrogen partial pressure of 0.78 atm.

Exploiting Shale gas in the Karoo: Good or Bad?   In your opinion, should South Africa exploit the shale gas reserves in the Karoo. Consider the environmental impacts vs the economic benefits of such an exploitation. (Write no more than 250 words).

Read about the Flixborough disaster that occurred in 1974 ( or watch a video about it on youtube). What was the cause of the accident and what safety lessons are to be learnt from this disaster? (Write no more than 250 words).

Solid calcium fluoride (CaF2) reacts with sulfuric acid (H2SO4) to form solid calcium sulfate (Ca... Solid calcium fluoride (CaF2) reacts with sulfuric acid (H2SO4) to form solid calcium sulfate (CaSO4) and gaseous hydrogen fluoride (HF). The HF is then dissolved in water to form hydrofluoric acid. A source of calcium fluoride is fluorite ore containing 96.0 wt% CaF2 and 4.0 wt% SiO2. In a typical hydrofluoric acid manufacturing process, fluorite ore is reacted with 93 wt% aqueous sulfuric acid, supplied 15% in excess of the stoichiometric amount. 95% of the ore dissolves in the acid. The HF(g) exiting the reactor is subsequently dissolved in enough water to produce 60.0 wt% HF (aq). Calculate the product composition from the reactor, and also the amount of water required to generate a 60.0 wt% HF solution.

advantages and disadvantages of a fixed and fluidized bed adsorbent

2.00-mol of a monatomic ideal gas goes from State A to State D via the path A?B?C?D:

Assume that the external pressure is constant during each step and equals the final pressure of the gas for that step.

Calculate q for this process.

Calculate w for this process.

Calculate ?E for this process

Calculate ?H for this process.

Discuss the reasons for introducing nanomaterials to make better sport equipment.
please answer with specific examples at least 2.

Nature always gives the valuable inspiration to improve engineering and science.
List at least 3 examples where we can learn nanoscience and technology.

A gas which obeys the equation of state, PV/RT=1 +BP , where B is a known
temperature-dependent parameter, is fed at a steady rate to an insulated valve where its pressure is reduced from P1 to P2. Given that the upstream temperature of the gas is T1 and that the constant-pressure molar heat capacity of the gas in the ideal gas state is given by Cp* = a + bT, where a and b are known constants, derive an expression for the temperature T2 of the gas downstream from the valve. Express your answer in terms of the parameters given above. Neglect the effect of any kinetic energy change across the valve.

(Chemical engineering)

Explain advantages and disadvantages of nanotechnology and direction of development.

In what ways does establishing a safety and health management system in an organization complement and improve compliance with the OSHA standards? Provide examples in your discussion.

Your response should be at least 200 words in length.

An IV bag is labeled as 0.900% w/w sodium chloride in water solution with a density of 1.025g/mL. What is the concentration of sodium chloride in the solution expressed in molarity, molality, and mole fraction?

Sodium chloride : NaCl, 58.44 g/mol

A bicycle rider is interested in the effects of temperature on air density. A change in temperature will also affect the tire pressure.

a) Write a computer program that calculates air density at atmospheric pressure for temperatures from -10?C to 50?C.

b) Assume that a bicycle tire is inflated to an absolute pressure of 450 kPa at 20?C. Assume also that the volume of the tire does not change with temperature. Write a program to show how the tire pressure changes with the temperature in the same range, -10?C to 50?C.

Prepare a table or graph or both.

5. Boris recently synthesized an explosive compound he named Badenoughium. The molecular formula for Bdenoughium is H5C3N3O9. The balance chemical equation for the ignition of Badenoughium is: 4 H5C3N3O9 (l) ? 12 CO2 (g) + 10 H2O (g) + O2 (g) + 6 N2 (g) a. When Badenoughium is ignited it has a ?H o rxn of - 5678 kJ. i. Determine the ?H o f for the compound Badenoughium. ii. Determine the ?H o rxn for when 1.25 grams of Badnenoughium is ignited. b. Boris ignites 1.25 grams of his compound in a 500.00 mL at a temperature of 100.0 oC. i. Determine the partial pressure for each of the gases produced when 1.25 grams of Badenoughium is ignited. ii. Determine the total pressure in the reaction vessel after 1.25 grams of Badenoughium has been igntited.