ITEM: ONE Air which is a mixture of different components contains 21% oxygen. Due to a wide spread of respiratory illnesses caused by COVID-19, there was an increas demand for oxygen by patients in the hospitals The government supply of oxygen is not enough and is planning to set up an oxygen production plant with minimal environmental impact. However , the science club members in your school would like to know how the process of production will be carried out TASK: As a Chemistry students, make a write up you will use during the presentation. ITEM: TWO A farmer in a village without electricity always keeps his garden tools ouside th house after the work.After sometimes his tools developed brown coating and was disturbed what happened. TASK: As a chemistry student: a) Point out the environmental factors that led to his tools to develop the brown coating. b) State the properties of one of the environmental factors listed in (a)abo c) What are the uses of the environmental factor in (a)above? d) What in the impact of the browh coating on the tools and how is this solved?

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ITEM: ONE Air which is a mixture of different components contains 21% oxygen. Due to a wide spread of respiratory illnesses caused by COVID-19, there was an increas demand for oxygen by patients in the hospitals The government supply of oxygen is not enough and is planning to set up an oxygen production plant with minimal environmental impact. However , the science club members in your school would like to know how the process of production will be carried out TASK: As a Chemistry students, make a write up you will use during the presentation. ITEM: TWO A farmer in a village without electricity always keeps his garden tools ouside th house after the work.After sometimes his tools developed brown coating and was disturbed what happened. TASK: As a chemistry student: a) Point out the environmental factors that led to his tools to develop the brown coating. b) State the properties of one of the environmental factors listed in (a)abo c) What are the uses of the environmental factor in (a)above? d) What in the impact of the browh coating on the tools and how is this solved?

Answer 1

### 1. Oxygen Production Process: - Air contains 21% oxygen. - Due to COVID-19, there's an increased demand for oxygen. - Oxygen can be produced through fractional distillation of liquid air or pressure swing adsorption. - Focus on minimizing environmental impact during production.2. Environmental Factors for Brown Coating: a) The brown coating is rust, caused by the presence of oxygen and moisture. b) Properties of Oxygen: - Highly reactive. - Supports combustion. - Essential for respiration. c) Uses of Oxygen: - Medical applications (e.g., oxygen therapy). - Industrial processes (e.g., steel manufacturing). - Combustion (e.g., in engines and furnaces). d) Impact of Rust and Solutions: - Rust weakens and degrades tools. - Solutions include using protective coatings, storing tools in dry places, and regular maintenance.

Answer 2

## Step1: Introduction to Oxygen Production### Explain the importance of oxygen and the need for its production due to increased demand from COVID-19 patients. Discuss the composition of air and the percentage of oxygen it contains.## Step2: Oxygen Production Process### Describe the process of oxygen production, focusing on methods like fractional distillation of liquid air and pressure swing adsorption. Emphasize the importance of minimizing environmental impact.## Step3: Environmental Factors for Brown Coating on Tools### Identify the environmental factors that cause the brown coating (rust) on the farmer's tools. Discuss the role of oxygen and moisture in the oxidation process.## Step4: Properties of Oxygen### State the properties of oxygen, one of the environmental factors listed in the previous step. Highlight its reactivity and role in oxidation.## Step5: Uses of Oxygen### Discuss the various uses of oxygen, including medical applications, industrial processes, and its role in combustion.## Step6: Impact of Rust on Tools and Solutions### Explain the impact of rust on the tools, such as weakening and degradation. Provide solutions like using protective coatings, storing tools in dry places, and regular maintenance.#

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