Homework Answers
Charge neutrality must be Maintained.
Each time a F- replaces a O2- one negative charge is removed so Mg vaccancies must be produced.
For each F- substituting for an O2- one negative charge is removed, in order to maintain charge neutrality, Two F- ions will lead to formation of one Magnesium vacancy
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(a) Suppose that MgF2 is added as an impurity to Mgo. If fluorine substitutes for oxygen,...
2. Suppose that FeO is added as impurity to Cu20. a) If Fe2+ substitutes for Cut,...
2. Suppose that FeO is added as impurity to Cu20. a) If Fe2+ substitutes for Cut, what kind of vacancies would you expect to form, if any? b) Based on your answer in a) how many vacancies are created per Fe2+ added? Justify your answer. (2p) 3. Which element is more soluble in Ni: Cu or Co? Justify your answer using Hume-Rothery rule. (2p)
- short hain or long chair 12. Suppose that FeO is added as impurity to Cu20....
- short hain or long chair 12. Suppose that FeO is added as impurity to Cu20. a) If Fe2+ substitutes for Cut, what kind of vacancies would you expect to form, if any? b) Based on your answer in a) how many vacancies are created per Fe* added? Justify your answer. (2p)
Suppose that one electron(s) is added to the outermost shell of a fluorine atom. What element's...
Suppose that one electron(s) is added to the outermost shell of a fluorine atom. What element's electron configuration would the atom then have? Spell out the full name of the element.
8. Hydrogen and oxygen gas combine to form water at STP. If you want 34.5 g...
8. Hydrogen and oxygen gas combine to form water at STP. If you want 34.5 g of water how many L of oxygen would you need? 9. If the pressure exerted by a gas at 13.0°C in a volume of 0.890 L is 4.52 atm, how many moles of the gas are present? 10. A sample of fluorine gas has a pressure of 6.85 mmHg at 10.0'C. What will its pressure be at 35.0*C if its volume remains constant? 11....
Please show work for problems 1-4 1. Calculate the activation energy for vacancy formation in aluminum,...
Please show work for problems 1-4
1. Calculate the activation energy for vacancy formation in aluminum, given that the equilibrium number of vacancies at 500°C (773 K) is 7.57 x10m3. The atomic weight and density (at 500°c) for aluminum are 26.98 g/mol and 2.62 g/cm, respectively 2. What point defects are possible for Al,0, as an impurity in Mgo? How many Al ions must be added to form each of these defects? 3. A sheet of steel 4.5 mm thick...
Yellow-green spheres represent fluorine atoms and red spheres represent oxygen atoms, and all the molecules are...
Yellow-green spheres represent fluorine atoms and red spheres represent oxygen atoms, and all the molecules are gases. Reactants Actual products Part A Write a balanced equation for the reaction. Express your answer as a chemical equation. Identify all of the phases in your answer. = AE O 2 ? Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Part B Identify the limiting reactant. Express your answer as a chemical formula. AD A 2 ? Part C...
I. Carbon atoms are about 25% lighter than oxygen atoms (the ratio of their weights is...
I. Carbon atoms are about 25% lighter than oxygen atoms (the ratio of their weights is 3 to 4). What is the weight ratio of the carbon and oxygen that go into the formation of carbon monoxide, CO? (a) 4 parts carbon to 3 parts oxygen (b) 1 part carbon to 4 parts oxygen (c) 1 part carbon to 1 part oxygen (d) 4 parts carbon to 1 part oxygen (e) 3 parts carbon to 4 parts oxygen 2. How...
17) Which of the following is TRUE? A) Stoichiometry allows prediction of how much of the reactants are necessary t...
17) Which of the following is TRUE? A) Stoichiometry allows prediction of how much of the reactants are necessary to form a given amount of product. B) Stoichiometry shows the numerical relationship between chemical quantities in a balanced chemical equation. C) Stoichiometry allows prediction of the amounts of products that form in a chemical reaction based on the amounts of reactants D) All of the above are true. E) None of the above are true. 18) Diatomic O2 can react...
please answer all the questions. Nitroglycerine (C3H5N309) decomposes explosively on its own (no oxygen added), producing...
please answer all the questions.
Nitroglycerine (C3H5N309) decomposes explosively on its own (no oxygen added), producing carbon dioxide, water vapor, nitrogen gas and oxygen gas. Balance the equation. Assuming 10.0 L of oxygen gas is produced, what is the total volume of gas produced by this explosion? If the oxygen gas produced has a mass of 14.286 g, what mass of nitroglycerine was originally present? You must show all work in order to get credit for this question. 4. Describe...
xperim fr G Orgeic nd c y eetandndeg 5. Below are structures of common aspinin substitutes...
xperim fr G Orgeic nd c y eetandndeg 5. Below are structures of common aspinin substitutes Why do ibuprofen and naproxen not give a 376 positive test with 1% ironllD chloride? Why does acetaminophen give a positive test? CH3 н, CH-COOH CH, -сH-Сн, CH, CH CH,O CH-COOH OH Cн, Naproxen Acetaminophen Вргобео 6. Bottles containing old aspirin tablets often smell this smell? How does this chemical form? vinegar. The presence of what chemical causes 7. You may have observed that...
2. Suppose that FeO is added as impurity to Cu20. a) If Fe2+ substitutes for Cut, what kind of vacancies would you expect to form, if any? b) Based on your answer in a) how many vacancies are created per Fe2+ added? Justify your answer. (2p) 3. Which element is more soluble in Ni: Cu or Co? Justify your answer using Hume-Rothery rule. (2p)
- short hain or long chair 12. Suppose that FeO is added as impurity to Cu20. a) If Fe2+ substitutes for Cut, what kind of vacancies would you expect to form, if any? b) Based on your answer in a) how many vacancies are created per Fe* added? Justify your answer. (2p)
8. Hydrogen and oxygen gas combine to form water at STP. If you want 34.5 g of water how many L of oxygen would you need? 9. If the pressure exerted by a gas at 13.0°C in a volume of 0.890 L is 4.52 atm, how many moles of the gas are present? 10. A sample of fluorine gas has a pressure of 6.85 mmHg at 10.0'C. What will its pressure be at 35.0*C if its volume remains constant? 11....
Please show work for problems 1-4
1. Calculate the activation energy for vacancy formation in aluminum, given that the equilibrium number of vacancies at 500°C (773 K) is 7.57 x10m3. The atomic weight and density (at 500°c) for aluminum are 26.98 g/mol and 2.62 g/cm, respectively 2. What point defects are possible for Al,0, as an impurity in Mgo? How many Al ions must be added to form each of these defects? 3. A sheet of steel 4.5 mm thick...
Yellow-green spheres represent fluorine atoms and red spheres represent oxygen atoms, and all the molecules are gases. Reactants Actual products Part A Write a balanced equation for the reaction. Express your answer as a chemical equation. Identify all of the phases in your answer. = AE O 2 ? Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Part B Identify the limiting reactant. Express your answer as a chemical formula. AD A 2 ? Part C...
I. Carbon atoms are about 25% lighter than oxygen atoms (the ratio of their weights is 3 to 4). What is the weight ratio of the carbon and oxygen that go into the formation of carbon monoxide, CO? (a) 4 parts carbon to 3 parts oxygen (b) 1 part carbon to 4 parts oxygen (c) 1 part carbon to 1 part oxygen (d) 4 parts carbon to 1 part oxygen (e) 3 parts carbon to 4 parts oxygen 2. How...
17) Which of the following is TRUE? A) Stoichiometry allows prediction of how much of the reactants are necessary to form a given amount of product. B) Stoichiometry shows the numerical relationship between chemical quantities in a balanced chemical equation. C) Stoichiometry allows prediction of the amounts of products that form in a chemical reaction based on the amounts of reactants D) All of the above are true. E) None of the above are true. 18) Diatomic O2 can react...
please answer all the questions.
Nitroglycerine (C3H5N309) decomposes explosively on its own (no oxygen added), producing carbon dioxide, water vapor, nitrogen gas and oxygen gas. Balance the equation. Assuming 10.0 L of oxygen gas is produced, what is the total volume of gas produced by this explosion? If the oxygen gas produced has a mass of 14.286 g, what mass of nitroglycerine was originally present? You must show all work in order to get credit for this question. 4. Describe...
xperim fr G Orgeic nd c y eetandndeg 5. Below are structures of common aspinin substitutes Why do ibuprofen and naproxen not give a 376 positive test with 1% ironllD chloride? Why does acetaminophen give a positive test? CH3 н, CH-COOH CH, -сH-Сн, CH, CH CH,O CH-COOH OH Cн, Naproxen Acetaminophen Вргобео 6. Bottles containing old aspirin tablets often smell this smell? How does this chemical form? vinegar. The presence of what chemical causes 7. You may have observed that...
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