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Question 33 (8 points) A 28.7 mL sample of KOH required 31.3 mL...
An aliquot (28.7 mL) of a KOH solution required 31.3 mL of 0.118 M HCl for...
An aliquot (28.7 mL) of a KOH solution required 31.3 mL of 0.118 M HCl for neutralization. What mass (g) of KOH was in the original sample? Question 4 options: A) 0.173 B) 7.28 C) 1.64 D) 0.207 E) 0.414
please answer all questions and show work? Home assignment: Chapter 4: Aqueous Reactions and Solution Stoichiometry...
please answer all questions and show work?
Home assignment: Chapter 4: Aqueous Reactions and Solution Stoichiometry 17) An aliquot (28.7 ml.) of a KOH solution required 31.3 mL of 0.118 M HCl for neutralization. What mass (g) of KOH was in the original sample? A) 1.64 B) 7.28 C) 0.173 D) 0.207 E) 0.414 18) Which of the following would require the largest volume of 0.100 M sodium hydroxide solution for neutralization? A) 10,0 mL of 0.0500 M phosphoric acid...
please show work? Question 31 (8 points) The radius of an atom of an unknown element...
please show work?
Question 31 (8 points) The radius of an atom of an unknown element is about 1.48x10° angstroms. Given that an angstrom is equal to 10-8 centimeters, use dimensional analysis to calculate the radius of this atom in inches. (Be sure to show all the conversion factors showing non-metric to metric units.) Please report your answer to the correct number of significant figures. Leave a space between the number and the unit.
Please show work.... 1. A 10.00 mL choride sample required 33.65 mL of .01251 M AgNO3...
Please show work.... 1. A 10.00 mL choride sample required 33.65 mL of .01251 M AgNO3 to reach the end point. a) How many moles of Cl- were present in the sample? b) What was the molarity of the Cl- sample?
please show work? Question 32 (8 points) What mass of NH3 is formed when 9.32 g...
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Question 32 (8 points) What mass of NH3 is formed when 9.32 g of Mg3N2 reacts with water according the equation? Mg3N2 + 6H20 3Mg(OH)2 + 2NH3 Please report your answer to the correct number of significant figures. Leave a space between the number and the unit.
Please show all work. 1.) What is the concentration of potassium ions in 100. mL of...
Please show all work. 1.) What is the concentration of potassium ions in 100. mL of a 0.21M solution of K3PO4? 2.) What volume of 0.150M iron (11) sulfate is required to produce a 250mL solution that is 0.045M iron (11) sulfate? 3.) What volume of 0.70M KOH is needed to neutralize 25.0mL of 0.55M HCl?
A 2.500 grams sample of a mixture of sodium carbonate (Na2CO3) and sodium chloride (NaCl) is...
A 2.500 grams sample of a mixture of sodium carbonate (Na2CO3) and sodium chloride (NaCl) is dissolved in 25.00 mL of 0.798 M HCl (hydrochloric acid). Some acid will remain after the treatment of the sample. If 28.7 mL of 0.108 M NaOH is required to titrate the excess HCI then how many moles of sodium carbonate were present in the original sample? Hint: The moles of Na2CO3 present is equal to one- half the number of H30* moles and...
Problem 2 (33 points) Please show your detailed work This problem is in Cylindrical Coordinate. T...
Problem 2 (33 points) Please show your detailed work This problem is in Cylindrical Coordinate. The following current distributions in the space is provided. Use Ampere's law and show your work clearly A current filament carrying N amperes going in the +z direction and located on/along the z axis. Then you are also given the following current density distributions, they are all in the +z direction a) (20 points) Find the magnetic flux density everywhere in the space. b) (5...
please show work? Question 34 (8 points) A 50.0 g sample of H20 at 100.00°C was...
please show work?
Question 34 (8 points) A 50.0 g sample of H20 at 100.00°C was placed in an insulated cup. Then 25.3 g of a metal at 25.00°C was added to the water. The temperature of the water dropped to 96.68°C. What is the specific heat of the metal in J/g°C? The specific heat of water is 4.184 J/g°C. Assume that the heat absorbed by the cup is negligible. Please report your answer to the correct number of significant...
please show work? Question 35 (8 points) What is the energy in J of a photon...
please show work?
Question 35 (8 points) What is the energy in J of a photon of light with a frequency of 1060 Hz? Please sure to answer with correct number of significant figures and use unit after the number
please answer all questions and show work?
Home assignment: Chapter 4: Aqueous Reactions and Solution Stoichiometry 17) An aliquot (28.7 ml.) of a KOH solution required 31.3 mL of 0.118 M HCl for neutralization. What mass (g) of KOH was in the original sample? A) 1.64 B) 7.28 C) 0.173 D) 0.207 E) 0.414 18) Which of the following would require the largest volume of 0.100 M sodium hydroxide solution for neutralization? A) 10,0 mL of 0.0500 M phosphoric acid...
please show work?
Question 31 (8 points) The radius of an atom of an unknown element is about 1.48x10° angstroms. Given that an angstrom is equal to 10-8 centimeters, use dimensional analysis to calculate the radius of this atom in inches. (Be sure to show all the conversion factors showing non-metric to metric units.) Please report your answer to the correct number of significant figures. Leave a space between the number and the unit.
please show work?
Question 32 (8 points) What mass of NH3 is formed when 9.32 g of Mg3N2 reacts with water according the equation? Mg3N2 + 6H20 3Mg(OH)2 + 2NH3 Please report your answer to the correct number of significant figures. Leave a space between the number and the unit.
A 2.500 grams sample of a mixture of sodium carbonate (Na2CO3) and sodium chloride (NaCl) is dissolved in 25.00 mL of 0.798 M HCl (hydrochloric acid). Some acid will remain after the treatment of the sample. If 28.7 mL of 0.108 M NaOH is required to titrate the excess HCI then how many moles of sodium carbonate were present in the original sample? Hint: The moles of Na2CO3 present is equal to one- half the number of H30* moles and...
Problem 2 (33 points) Please show your detailed work This problem is in Cylindrical Coordinate. The following current distributions in the space is provided. Use Ampere's law and show your work clearly A current filament carrying N amperes going in the +z direction and located on/along the z axis. Then you are also given the following current density distributions, they are all in the +z direction a) (20 points) Find the magnetic flux density everywhere in the space. b) (5...
please show work?
Question 34 (8 points) A 50.0 g sample of H20 at 100.00°C was placed in an insulated cup. Then 25.3 g of a metal at 25.00°C was added to the water. The temperature of the water dropped to 96.68°C. What is the specific heat of the metal in J/g°C? The specific heat of water is 4.184 J/g°C. Assume that the heat absorbed by the cup is negligible. Please report your answer to the correct number of significant...
please show work?
Question 35 (8 points) What is the energy in J of a photon of light with a frequency of 1060 Hz? Please sure to answer with correct number of significant figures and use unit after the number
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