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1. Which criteria that define life implicate existence of enzymes? Why are viruses not universally considered to be a life form? Do viruses contain enzymes?
2. Human body can metabolize both lactate and alcohol but can only produce lactate and not alcohol. Why? What are the advantages of either of the two processes? What happens to alcohol in human body? How is this process related to the production of vinegar? Why is alcohol toxic to human? Is alcohol toxic to yeasts?
3. Choose one example of the practical application of an enzyme or an enzyme system. Describe the application. Explain what enzyme is used and why? Explain what are the advantages and disadvantages of this application. It can be medical, industrial, laboratory. You can use one of the examples on Moodle or find your own.
Alkali metals are extremely reactive with water. Suppose I give you a 55.50 g chunk of cesium and you throw it into a lake. When it reacts with water to form cesium hydroxide and hydrogen gas
Calculate (a). the kilograms of water per minute needed to remove the sulfur dioxide assuming that the exit water is in equilibrium with the entering gas and (b) the ratio of the water stream to the gas stream. The Henry's law constant for sulfur ..
If you won 1 mol of dollars the day you were born as well as spent 1billion dollars a second for the rest of your life, explain what percentage of the prize money would remain, if any, while you decide to retire from spending at 90 years of age
If an automobile airbag has a volume of 9.80 L, what mass of NaN3 is required to fully inflate the airbag upon impact under conditions of atmospheric pressure (1.00 atm) and room temperature (25 C).
A hydrate of calcium chloride contains 49.3% water and has a formula weight of 219 g/mol. Calculate the molecular formula of the hydrate.
What is the minimum external voltage must one supply in orger to perform the electrolsis of molten CaCl_2(l)? Suggest a means for supplying this energy.
Problem- Identify the following gas phase reactions as A (spontaneous at all temperatures), B (spontaneous at low temperatures), C (spontaneous as high), or D (spontaneous at no temperature)
A gaseous mixture of O2 and Kr has a density of 1.114 g/L at 431 torr and 325 K.What is the mole percent O2 in the mixture.
Given Data: average number of drops/mL = 73.0; overall average diameter of oleic acid film = 38.0 cm. Use this data to calculate following:
Sodium-24, which is used to locate blood clots in the human circulatory system, has a half-life of 15.0 hours. A sample of sodium-24 with an inital mass of 13.0 g was stored for 45.0 hours. How many grams of sodium-24 is left in the sample after 4..
25.0 ml of ethanol density 0.789 gml initially at 7.4degc is mixed with 32.1 ml of water density 1.0 gml initially at
VO2 can exist in insulating or metallic form, depending on temperature and pressure.
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