Homework Answers
Given the radius of the atom is 1.48 x 109 angstroms
1.48 x 109 x 10-8 cm = 1.48 x 10 cm = 14.8 cm (1 angstrom = 10-8 cm)
14.8 cm = 14.8 x 0.3937 inch = 5.8267 inch = 5.827 inch (1 inch = 2.54 cm ; 1cm = (1/2.54) inch)
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Question 31 (8 points) The radius of an atom of an unknown element...
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 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
(20%) Data 1) For all calculations use following specifications A) Show the raw formula solving for the unknown variabl...
(20%) Data 1) For all calculations use following specifications A) Show the raw formula solving for the unknown variable B) Substitute into the raw formula with units C) Show final answer with units 2) For all calculations abide by the rules of significant fioures 1) (0%) Complete Table 1 below Microsoft's Equation Editor to show all work for each calculation with the Average Subject of the Tral Initial Final Change in Displacement Displacement (inches) Change in displacement (inches) displacemen (inches)...
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...
For each of the following, you’ll need to perform dimensional analyses. Show your work, use significant...
For each of the following, you’ll need to perform dimensional analyses. Show your work, use significant figures and show all conversion factors you use. You may need to use some of the conversion factors or equations below and you many need to look some up. 1 mole = 6.02x1023 atoms mass of a gold atom = 3.27 x 10-22 g radius of a gold atom = 174 picometers density of gold = 19.3 g/mL volume of a sphere = 4/3πr3...
please show work? Question 33 (8 points) A 28.7 mL sample of KOH required 31.3 mL...
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Question 33 (8 points) A 28.7 mL sample of KOH required 31.3 mL of 0.118 M H2SO3 to neutralize it. How many grams of KOH were in the original sample? 2KOH + H2SO3 ----> K2503 + 2H20 Please leave a space between the number and unit in your answer.
Please show all work Neatly 8. A rectangular object has a mass of 0.8 kg and...
Please show all work Neatly
8. A rectangular object has a mass of 0.8 kg and the following dimensions of length, width, and height: 1 = 10.0 cm, w = 3.0 cm and h = 2.0 cm. a) Calculate the density of this object in units of g/cm? Report your answer with the proper number of significant figures. (6 points) d=m:V 1kg = 1000 g b) Calculate the pressure that this object will exert on a surface placed so that...
11. (8 points) Give the answer to each question about solid state structures in the space provided. Remember to show your work. 240.7So Tungsten metal packs in the body-centered cubic (BCC) s...
11. (8 points) Give the answer to each question about solid state structures in the space provided. Remember to show your work. 240.7So Tungsten metal packs in the body-centered cubic (BCC) structure. If the body diagonal of the unit cell is 556 pm, what is the atomic radius of a tungsten atom? d-N30 24.hpm Nickel metal packs in the face-centered cubic (FCC) structure. If the body diagonal of the unit cell is 607 pm, what is the atomic radius of...
Please show the work, including any converstions that are needed. Please do not typ the answer...
Please show the work, including any converstions that are
needed. Please do not typ the answer out in normal compter type
Show all calculations and report answers with the correct number of significant figures. All work should be neatly presented on separate sheets of paper and not on th 1. A certain beaker has a height of 8.00 inches and an inside diameter of 4.25 inches. A chemist places ten marbles, each with a diameter of 17.0 mm, in the...
please show work? Question 20 (8 points) A 2.15 g sample of molecular solid was dissolved...
please show work?
Question 20 (8 points) A 2.15 g sample of molecular solid was dissolved in 25.0 g of CS2. The boiling point elevation of the solution was 1:59°C. Find the molar mass of the unknown. (Kb of CS2 is 1.07°C/m)
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.
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
(20%) Data 1) For all calculations use following specifications A) Show the raw formula solving for the unknown variable B) Substitute into the raw formula with units C) Show final answer with units 2) For all calculations abide by the rules of significant fioures 1) (0%) Complete Table 1 below Microsoft's Equation Editor to show all work for each calculation with the Average Subject of the Tral Initial Final Change in Displacement Displacement (inches) Change in displacement (inches) displacemen (inches)...
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 33 (8 points) A 28.7 mL sample of KOH required 31.3 mL of 0.118 M H2SO3 to neutralize it. How many grams of KOH were in the original sample? 2KOH + H2SO3 ----> K2503 + 2H20 Please leave a space between the number and unit in your answer.
Please show all work Neatly
8. A rectangular object has a mass of 0.8 kg and the following dimensions of length, width, and height: 1 = 10.0 cm, w = 3.0 cm and h = 2.0 cm. a) Calculate the density of this object in units of g/cm? Report your answer with the proper number of significant figures. (6 points) d=m:V 1kg = 1000 g b) Calculate the pressure that this object will exert on a surface placed so that...
11. (8 points) Give the answer to each question about solid state structures in the space provided. Remember to show your work. 240.7So Tungsten metal packs in the body-centered cubic (BCC) structure. If the body diagonal of the unit cell is 556 pm, what is the atomic radius of a tungsten atom? d-N30 24.hpm Nickel metal packs in the face-centered cubic (FCC) structure. If the body diagonal of the unit cell is 607 pm, what is the atomic radius of...
Please show the work, including any converstions that are
needed. Please do not typ the answer out in normal compter type
Show all calculations and report answers with the correct number of significant figures. All work should be neatly presented on separate sheets of paper and not on th 1. A certain beaker has a height of 8.00 inches and an inside diameter of 4.25 inches. A chemist places ten marbles, each with a diameter of 17.0 mm, in the...
please show work?
Question 20 (8 points) A 2.15 g sample of molecular solid was dissolved in 25.0 g of CS2. The boiling point elevation of the solution was 1:59°C. Find the molar mass of the unknown. (Kb of CS2 is 1.07°C/m)
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