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(a) As a chemist, suggest ONE (1) suitable plastic could be used in production of this
new product and explain why you choose this polymer.
(b) Discuss the safety requirements for microwavable plastic.
new product and explain why you choose this polymer.
(b) Discuss the safety requirements for microwavable plastic.
(a) Using a suitable diagram, explain in details the extraction method of gold from
electronic wastes.
(b) Discuss advantages and disadvantages of recycling electronic waste components.
The true volume of a 50-mL volumetric flask is 50.037 mL at20OC. What mass of water measured (a) in vacuum and (b) in air at
20OC would be contained in the flask?
20OC would be contained in the flask?
In the reaction nh3(g)+o2-->no(g)+h2o(g)
How many grams of h2o are generated when 1.54 moles of nh3 react?
How many grams of h2o are generated when 1.54 moles of nh3 react?
You are required to provide a technical report to Dr T Enterprise
management and technical team on what probably cause it and how best
the liquid CO2 infused into the drink. Considering only water and CO2 as the
binary mixture and the operating temperature is at 25 oC, using your own
sensible, justified assumptions with calculations and cited references, provide
an acceptable specification for carbonated drink production by specifying the
followings items:
• Operating pressure for liquid CO2 production and liquid CO2 pressure
when it is infused to the can
• Appropriate amount of liquid CO2 infused into the can with reasoning
• Density of CO2 gas in the carbonated drinks in ideal and non-ideal
situation
• Mole fraction of CO2 in liquid and vapor phase at equilibrium
• Equilibrium constant of CO2
management and technical team on what probably cause it and how best
the liquid CO2 infused into the drink. Considering only water and CO2 as the
binary mixture and the operating temperature is at 25 oC, using your own
sensible, justified assumptions with calculations and cited references, provide
an acceptable specification for carbonated drink production by specifying the
followings items:
• Operating pressure for liquid CO2 production and liquid CO2 pressure
when it is infused to the can
• Appropriate amount of liquid CO2 infused into the can with reasoning
• Density of CO2 gas in the carbonated drinks in ideal and non-ideal
situation
• Mole fraction of CO2 in liquid and vapor phase at equilibrium
• Equilibrium constant of CO2
A liquid pesticide has a density of 1.67 g/mL. What is the mass of
liquid in a full 20.0L container?
liquid in a full 20.0L container?
Q . Export fishes are believed to be containmented with Mercury give reason why?
Benzene is a liquid hydrocarbon. When a 342 mg sample of benzene is burned in an excess of
oxygen 1156 mg of carbon dioxide is produced. Determine the empirical formula of benzene. If
the molar mass of benzene is 78.1134 g/mol, what is the molecular formula of benzene?
oxygen 1156 mg of carbon dioxide is produced. Determine the empirical formula of benzene. If
the molar mass of benzene is 78.1134 g/mol, what is the molecular formula of benzene?
(A) Safety regulations dictate that a ladder leaned against a building must be at an angle of 65°. A ladder that is 10.0 feet long will be used. How high up the side of building will the ladder safely reach? Include a diagram in your answer.
(B) A wind mill is 180 ft high. A guy wire will be fastened to the base of the windmill, 20 feet from the top and anchored into ground. The guy wire makes an angle of 40° with the ground. What length of the wire will be needed? Include a diagram in a diagram in your answer.
(B) A wind mill is 180 ft high. A guy wire will be fastened to the base of the windmill, 20 feet from the top and anchored into ground. The guy wire makes an angle of 40° with the ground. What length of the wire will be needed? Include a diagram in a diagram in your answer.
Why the structure of newly synthesized drug needs to be determined ? Give reason .
