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Assignment1. Using the element Nitrogen as your example, describe the characteristics that define Nitrogen as an element, what differentiates isotopes of Nitrogen from the element and how an ionic state is determined.
2. There are four unique properties of water that makes it so central to life. Explain, in detail, each of these four properties.
3. An aqueous solution is made when a substance is dissolved in water. Explain how the pH scale represents different aqueous solutions. Use specific examples in your description.
4. Almost no metabolic reaction is able to occur without the help of an enzyme. Explain how the structure of an enzyme and substrate function. Include a specific example in your answer.
5. Explain why the shape of a protein is important. Provide three examples of different shaped proteins and their functions.
determine the theoretical and percent yields of ethanol if 684g sucrose undergoes fermentation and 349g ethanol is
What is the reducing agent and what has been reduced? What quantity of iodine can be obtained if 20.0g of NaI is mixed with 10.0g of MnO2 ( and a stoichiometric excess of sulfuric acid)
the solubility of O2(g) in water is 4.43 mg O2/100 g H20 at 20 degree Celsius when the gas pressure is maintained at 1 atm. What is the molarity of the saturated solution?
A 50.0 L steel tank at 20.0 degree C contrains acetylene (C2H2) at a pressure of 125 atm. assuming ideal behavior, how many grams of acetylene are in the tank
When 7 mL of a solution containing 3 M KNO3 is diluted to 21mL, a dilute solution is formed. What is the NO3- concentration in 10mL of the dilute solution?
Problem- Suppose that the atomic mass unit (amu) had been defined as one-twentieth of the average mass of an atom of carbon instead of one-twelfth of the mass of an atom of carbon-12. What would the average atomic mass of aluminum be on this new s..
What mass of ammonium chloride should be added to 2.55 L of a 0.165 MNH3 in order to obtain a buffer with a pH of 9.45?
What is the number of moles of O2 needed to burn 260.0g of C2H2 in the reaction: 2C2H2 + 5O2 yields 4CO2 + 2H2O?
you have a stock solution of 14.8m ammonia. determine how many milliliters of this solution should you dilute to make
Explain what is the flow rate of the CaCO3 that would be required if CaO is produced by calcining CaCO3? If the efficiency of sulfur capture is 65%.
The density of 70.5 weight% aqueous perchloric acid is 1.67 g/ml. Recall that grams refers to grams of solution (=g HClO4+g H2O). How many grams of HCIO4 are in 1 Liter
Question- a 100.0 ml aliquot of .100 M diprotic acid H2A (pk1=4.00, pk2=8.00) was titrated with 1.00 M NaOH. Find the pH at the following volumes of base added 11, 15, 19, 20, and 22ml
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