Part 2: Unit 1 1. Which technology of the past do you think had the most impact in the way of life of people today? Discuss in 3-5 sentences. 2. Did new technologies help in making humans more productive or have these caused a decrease in the efficiency of work of people? Explain your answer in 3-5 sentences.

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A chemical engineer is studying the rate of this reaction. He fills a reaction vessel with and measures its concentration as the reaction proceeds. Here's a graph of his data: 0.20.40.60.8100.20.40.60.811.20 Use this graph to answer the following questions: What is the half life of the reaction? Round your answer to significant digits. Suppose the rate of the reaction is known to be first order in . Calculate the value of the rate constant . Round your answer to significant digits. Also be sure you include the correct unit symbol. Predict the concentration of in the engineer's reaction vessel after seconds have passed. Assume no other reaction is important, and continue to assume the rate is first order in . Round your answer to significant digits.

Title: Paper Mill Starch Preparation Plant   Considering the following equipment’s, which includes: 1. A storage tank containing a mixture of flour, water, and enzymes2. A jet cooker utilising steam and water to cook the starch3. A plug flow reactor containing cooked starch4. A static mixer 5. A filter to filter and purify the cooked starch 6. A storage tank with cooked starch   Based on the equipment’s mentioned, what are each equipment's: - Hazardous event or situation- Caused by/sequence of events- Consequences (immediate/ultimate)- Emergency measures (to reduce consequences)- Likelihood (Suggested measures to reduce likelihood)   ❗️Riminder: When answering the questions above, think about: What's the worst thing (worst-case scenario) that could happen to the equipment and causes harm to people, plant and the environment?