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The volume of the baloon is now 1.3 L. What is the final pressure of the gas in the balloon? Assume that the temperature and moles of an ideal gas within a balloon are constant. Round your answer to
Calculate the average atomic mass in units of amu for iron (Fe) given that the naturally occurring element exists mainly as a mixture of Fe-56 (91.754%0), Fe-54 (5.845%), and Fe-57 (2.119%). Does yo
A balloon that contains 0.750 moles of gas has a volume of 16.8 L. If the balloon expands to a volume of 25.4 L at a constant pressure and temperature, how many moles of gas would the balloon contai
The heat capacity of H2O(l) is 75.2 J/mol·K and that the heat capacity of H2O(s) is 37.7 J/mol·K, calculate the heat of fusion of water at -15°C.
Which of the following correctly shows a neutralization reaction between a hydronium ion and a hydroxide ion?
It the activation energy for the 2Cl from Cl2 is 243.4 KJ what is the activation energy for the reverse reaction ("cl to Cl2)?
Which of the following best describes the forces that generate geothermal power?
A 5.45g combustible sample is burned in a calorimeter. The heat generated changes the temperature of 555g water from 20.5 C to 39.5 C. How much energy is released by the burning? The specific heat o
On a potential energy diagram, the activation energy is greatest under which of the following conditions?
What is the impact of malaria in terms of health, mortality, and economics? How does DDT work to control malaria?
According to the collision theory and model created to explain the collision theory, why does a catalyst cause a reaction to speed up?
What are the differences and similarities between fingerprinting and DNA fingerprinting? What are endangered species? How do they become endangered?
Biotechnology has allowed us to genetically modify corn with a gene that acts as a pesticide. What could be a possible environmental impact of this development?
Which of the following is the salt in the Br nsted-Lowry neutralization reaction?
A professional emergency responder should be concerned about the following routes of radiation exposure for a person on scene and a person downtown?
Describe the appropriate circumstances for using the example for each term and when it might lead to misunderstanding.
Write the molecular formula of glycine, an amino acid present in proteins.
What is the difference between inorganic compounds and organic compounds?
The following table gives the number of electrons, protons, and neutrons in atoms or ions of four elements, identified only as A, B, C, and D. Write the isotopic symbol for each element.
Define, with two examples, the following terms: (a) alkali metals, (b) alkaline earth metal, (c) halogens, and (d) noble gases.
Explain how the phospholipid bilayer is effective as the cell membrane. What is the purpose of DNA? Describe its structure.
Briefly discuss what homeostatic mechanism occurs in the body when a person is experiencing extremely hot conditions. You may need to research this.
Rewrite the following so that they read from left to right in increasing order of organisation. How do connective tissue cells differ from nerve cells?
What is the difference between mitosis and meiosis, where and when do these processes occur? Explain how the phospholipid bilayer is effective as the cell membrane.
Explain with appropriate illustriation the concept of Resonance stabilization of propan-2-one