Homework Answers
Cationic Vacancies will be formed. As the compound overall remains electrically neutral.
(b) Data insufficient for the next calculations
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b. If 3.011 x 10-22 units of Fe2O3 are added to the sample with Fe3+ substituting...
Calculate [Fe3+] and [SCN-] for each of the nine trials. Show the calculations for Sample 1...
Calculate [Fe3+] and [SCN-] for each of the nine trials. Show
the calculations for Sample 1
calibration curve is y=3967.7x-0.0822
the R^2 value is y=0.09959
Solution [SCN-1 2.06764 Stock solution B Absorbance Dilution 1 (50.0%) 1.0 xl-4 0.723 Dilution 2 (25.0%) S.Oxon Dilution 3 (12.5%) 2.5X2.5 (FeSCN2+). 2.0 X10" 1.0X10-4M 5.0x105m 2.5x105m 0.289 1o.lll 10.036 Calibration curve trendline equation Y 3967.7% -0.0823 R2 value of trendline R 0.99 se Sample Number 0.0020 M Fe(NO2), (ml) 0.0020 M KSCN (mL) 8...
a) 4.9 x 10'M b)24x10 M c)5.8x 1010 M )1.2 x 10 M 19. Which one of the following compounds will have the lowest molar solubility in pur water? b) CuS, Ksp 1.27x103 d) ZnS, Ksp = 1.6 x 10-24 a...
a) 4.9 x 10'M b)24x10 M c)5.8x 1010 M )1.2 x 10 M 19. Which one of the following compounds will have the lowest molar solubility in pur water? b) CuS, Ksp 1.27x103 d) ZnS, Ksp = 1.6 x 10-24 a) PbS, Ksp 9.04 x 102 e) Al(OH)s, Ksp 3 x 1034 What is the molar solubility, i.e. [Fe , in a saturated aqueous solution of 20. Fe(OH)20) Fe(OH(s)Fe2+(aa) + 201H (ag), Ksp 4.87 x 101" a) 2.44 x 1017...
CHM1045L, Practice Quiz 1. Exp. 5 --- Show all work with units. 1 A2.000g sample of...
CHM1045L, Practice Quiz 1. Exp. 5 --- Show all work with units. 1 A2.000g sample of aluminum (26.98 g/mol) was completely reacted with excess oxygen (16 g/mol) in a crucible to yield 3.779g of an unknown aluminum oxide. Al (1) + 026) + Al Oy) a. What is the mass of oxygen added? b. How many moles of oxygen have been added? C. How many moles of aluminum are in the aluminum oxide? d. What is the empirical formula of...
1. calculate the number of moles in 3.75 x 10^23 formula units of MgCl2 2. calculate...
1. calculate the number of moles in 3.75 x 10^23 formula units of MgCl2 2. calculate the number of formula units in 92.06 grams of MgBr2 3. What is the percent composition of a compound that contains 9.21 grams nitrogen and 15.79 grams oxygen? 4. how many grams of oxygen are in a 75.5 gram sample of Al2O3?
QUESTION 22 5 points A B 1 Inputs 2 Units Sales Price 25 3 Annual Fixed...
QUESTION 22 5 points A B 1 Inputs 2 Units Sales Price 25 3 Annual Fixed Cost 52000 4 Unit Variable Cost 9 5 6 Quantity Made and Sold 7 8 Calculations and Outputs 9 Annual Revenue 10 Annual Variable Cost 11 Annual Fixed Cost 12 Annual Total Cost 13 Annual Profit (Loss) Reference Break Even Analysis. Excel To calculate the break-even quantity in cell 36 the correct formula is A-B3/B4-B2) OB A3/A2-A4) C.-86/85-87) D.-03/02-04) E-03/02-14
3. (22 total points) Suppose there are two consumers, A and B, and two goods, X...
3. (22 total points) Suppose there are two consumers, A and B, and two goods, X and Y. Consumer A is given an initial endowment of 2 units of good X and 3 units of good Y. Consumer B is given an initial endowment of 6 units of good X and 5 units of good Y. Consumer A's utility function is given by: And consumer B's utility function is given by Therefore, consumer A's marginal utilities for each good are...
I know the answer to part b is supposed to be 3.77 x 10^-4 but I...
I
know the answer to part b is supposed to be 3.77 x 10^-4 but I
don't understand how.
1. A loop of wire (R- 10cm) with a counterclockwise current (I 30mA) is in a uniform magnetic field (B 0.4) directed to the right. The plane defined by the loop is parallel to the field. a (1p) If the loop is free to rotate, the loop will rotate such that the dot moves out of the page. ii. rotate such...
A Social Planner allocates two goods X (20 units) and Y (10 units) between two consumers...
A Social Planner allocates two goods X (20 units) and Y (10 units) between two consumers 1 and 2. (a) What is the efficiency condition? (b) If consumers 1 and 2 have the utility function U=10.X.4Y.6, and U=10.X.6Y.4 respectively, what is the efficient allocation? (c) Instead of the social planner allocating goods, a competitive market exists. What is the price ratio of X and Y? (d) If X has $50 and Y has $100, and price of Y is 1,...
Consider the following sample data: X y 22 101 24 139 27 250 21 88 23...
Consider the following sample data: X y 22 101 24 139 27 250 21 88 23 87 14 14 14 16 15 20 Click here for the Excel Data File b. Calculate by and bo. What is the sample regression equation? (Negative values should be indicated by a minus sign. Round your intermediate calculations to 4 decimal places and final answers to 2 decimal places.) y-hat = c. Find the predicted value for y if x equals 20, 100 and...
PART 24) What are the units for Equilibrium Constant? A, Ms-s B) M C)Ms! D) si E) none of these. ...
PART 24) What are the units for Equilibrium Constant? A, Ms-s B) M C)Ms! D) si E) none of these. Please show your work for the following Question to get the full credit 25) Use the dilution formula to calculate the concentrations of irom(ll) ions and SCN ions when 5.00 ml of o.002M iron/(lI) nitrate is mixed with 4.00 mL of 0.002 M NaSCN and dilute nitric acid is added to bring the total volume of the solution to 20.0...
Calculate [Fe3+] and [SCN-] for each of the nine trials. Show
the calculations for Sample 1
calibration curve is y=3967.7x-0.0822
the R^2 value is y=0.09959
Solution [SCN-1 2.06764 Stock solution B Absorbance Dilution 1 (50.0%) 1.0 xl-4 0.723 Dilution 2 (25.0%) S.Oxon Dilution 3 (12.5%) 2.5X2.5 (FeSCN2+). 2.0 X10" 1.0X10-4M 5.0x105m 2.5x105m 0.289 1o.lll 10.036 Calibration curve trendline equation Y 3967.7% -0.0823 R2 value of trendline R 0.99 se Sample Number 0.0020 M Fe(NO2), (ml) 0.0020 M KSCN (mL) 8...
a) 4.9 x 10'M b)24x10 M c)5.8x 1010 M )1.2 x 10 M 19. Which one of the following compounds will have the lowest molar solubility in pur water? b) CuS, Ksp 1.27x103 d) ZnS, Ksp = 1.6 x 10-24 a) PbS, Ksp 9.04 x 102 e) Al(OH)s, Ksp 3 x 1034 What is the molar solubility, i.e. [Fe , in a saturated aqueous solution of 20. Fe(OH)20) Fe(OH(s)Fe2+(aa) + 201H (ag), Ksp 4.87 x 101" a) 2.44 x 1017...
CHM1045L, Practice Quiz 1. Exp. 5 --- Show all work with units. 1 A2.000g sample of aluminum (26.98 g/mol) was completely reacted with excess oxygen (16 g/mol) in a crucible to yield 3.779g of an unknown aluminum oxide. Al (1) + 026) + Al Oy) a. What is the mass of oxygen added? b. How many moles of oxygen have been added? C. How many moles of aluminum are in the aluminum oxide? d. What is the empirical formula of...
QUESTION 22 5 points A B 1 Inputs 2 Units Sales Price 25 3 Annual Fixed Cost 52000 4 Unit Variable Cost 9 5 6 Quantity Made and Sold 7 8 Calculations and Outputs 9 Annual Revenue 10 Annual Variable Cost 11 Annual Fixed Cost 12 Annual Total Cost 13 Annual Profit (Loss) Reference Break Even Analysis. Excel To calculate the break-even quantity in cell 36 the correct formula is A-B3/B4-B2) OB A3/A2-A4) C.-86/85-87) D.-03/02-04) E-03/02-14
3. (22 total points) Suppose there are two consumers, A and B, and two goods, X and Y. Consumer A is given an initial endowment of 2 units of good X and 3 units of good Y. Consumer B is given an initial endowment of 6 units of good X and 5 units of good Y. Consumer A's utility function is given by: And consumer B's utility function is given by Therefore, consumer A's marginal utilities for each good are...
I
know the answer to part b is supposed to be 3.77 x 10^-4 but I
don't understand how.
1. A loop of wire (R- 10cm) with a counterclockwise current (I 30mA) is in a uniform magnetic field (B 0.4) directed to the right. The plane defined by the loop is parallel to the field. a (1p) If the loop is free to rotate, the loop will rotate such that the dot moves out of the page. ii. rotate such...
Consider the following sample data: X y 22 101 24 139 27 250 21 88 23 87 14 14 14 16 15 20 Click here for the Excel Data File b. Calculate by and bo. What is the sample regression equation? (Negative values should be indicated by a minus sign. Round your intermediate calculations to 4 decimal places and final answers to 2 decimal places.) y-hat = c. Find the predicted value for y if x equals 20, 100 and...
PART 24) What are the units for Equilibrium Constant? A, Ms-s B) M C)Ms! D) si E) none of these. Please show your work for the following Question to get the full credit 25) Use the dilution formula to calculate the concentrations of irom(ll) ions and SCN ions when 5.00 ml of o.002M iron/(lI) nitrate is mixed with 4.00 mL of 0.002 M NaSCN and dilute nitric acid is added to bring the total volume of the solution to 20.0...
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