Homework Answers
18) molar mass of (CH3)2CO:
=2 (molar mass of C) + 1 (molar mass of oxygen) + 6 (molar mass of hydrogen)
= 3(12.0107) + 1 (16.00) + 6 (1.00794)
= 36.0 + 16.0 + 6.05 = 58 g
Therefore, the molar mass of (CH3)2CO = 58 g
option A is correct
19) molar mass of KMnO4 = 158.034 g/mol
percentage by mass of oxygen = (mass of oxygen / moalr mass of KMnO4)*100
percentage by mass of oxygen = (64 / 158.034)*100 = 40.5 %
Therefore, option C is correct
calculate the molar mass for each of the following gases given the STP density: (a) oxygen, 1.43 g/L (b) phosphine, 1.52...
calculate the molar mass for each of the following gases given the STP density: (a) oxygen, 1.43 g/L (b) phosphine, 1.52 g/L (c) nitrous oxide, 1.97 g/L (d) Freon-12, 5.40 g/L
0.150 g benzophenone 0.100 g NaBH4 eagaph Show the theoretical result of the reactants and the product + Na,BO (CHszCHOH 1) For A al Calculate the formule molecular b) Molar mass i/mel ci Amo...
0.150 g benzophenone
0.100 g NaBH4
eagaph Show the theoretical result of the reactants and the product + Na,BO (CHszCHOH 1) For A al Calculate the formule molecular b) Molar mass i/mel ci Amount a Moles e) m 21 Fors a) Calculate the formuke mokcular bl Molar mass (mo c) Amount d] Moles 4) Calculate the formuk mobcua B) Molar mass (gimol co Amoune ig DI Moles El m A) Calculate the formde motecula B) Molar mass ie/mal Q Amount...
3) Calculate the percentage by mass of hydrogen in PtCl2(NH3)2 A) 0.672 B) 2.016 C) 1.008...
3) Calculate the percentage by mass of hydrogen in PtCl2(NH3)2 A) 0.672 B) 2.016 C) 1.008 D) 0.034 E) 1.558 4) How many molecules of CH4 are in 48.2 g of this compound? A) 1.81 x 1024 B) 4.00 C) 2.00 x 1023 D) 4.64 x 1026 E) 5.00 x 10-24 5) A sample of CH2F2 with a mass of 19 g contains A) 9.5 B) 3.3 * 1024 C) 2.2 x 1023 atoms of F. D) 4.4 x 1023...
А - B с D E F G H J K L Points 95% Confidence Interval...
А - B с D E F G H J K L Points 95% Confidence Interval for Average Age of Online College Students: 1 Age 2 3 4 5 Sample Mean: Sample St. Dev: Sample Size: 31.29 10.18 21.9 mil 1 6 7 2 Distribution: T-Distribution 2 Critical Value: *2 decimals 2 1 1 Margin of Error: Lower Bound: Upper Bound: *2 decimals Calculation: *2 decimals Calculation: *2 decimals Calculation: 2 Interpret 95% Confidence interval for Proportion of Male Online...
3 Using your TI-83/4, calculate the (a) minimum, (b) lower quartile (Q1), (c) median, (d) upper...
3 Using your TI-83/4, calculate the (a) minimum, (b) lower quartile (Q1), (c) median, (d) upper quartile (Q3) and (e) maximum of the following data (n = 25; Sx = 260). (p 89) 2 3 15 10 11 7 19 12 -3 14 6 2 14 12 22 2 16 22 9 5 0 13 13 16 18 4 Using your TI-83/4, sketch a histogram of the following data (n = 25; Sx = 1327) and calculate...
Hallo B I U a. Av obca v ili u A1 fx Amount B C D...
Hallo B I U a. Av obca v ili u A1 fx Amount B C D E F G 1 اهم الا Amount 2 20.50 3 14.63 23.77 29.96 6 29.49 7 32.70 8 9.20 9 20.89 10 28.87 11 15.78 12 18.16 13 12.16 14 11.22 15 16.43 16 17.66 17 9.59 18 18.89 19 19.88 20 23.11 21 20.11 22 20.34 23 20.08 24 30.36 25 21.79 26 21.18 27 19.22 28 34.13 29 27.49 30 36.55 31...
Е. попе E. 0.733 and 1.324 14. the molar mass of toluene is 92.6 gmol, how much tokuene is needed to depress the fr...
Е. попе E. 0.733 and 1.324 14. the molar mass of toluene is 92.6 gmol, how much tokuene is needed to depress the freezing point of 200 g of benzene by 047C? K 5.12 Cm a The vapor pressure of pure water at 26 "C is 25.2 torr. What is he vapor pressure of a solution that contains 16.0 g of glucose (CaHuO) dissolved in 80 g of water? A. 1.7g A. 14.1 tor B. 17g B. 24.7 torm C....
39) What property of liquids explains the formation of leaves? A) surface tension B) adhesion C)...
39) What property of liquids explains the formation of leaves? A) surface tension B) adhesion C) viscosity D) vapor pressure E) None of the choices are correct. mation of spherical water droplets on green 3 9) - um at constant pressure and temperature has the volume 40) 40) A balloon containing helium at constant pres doubled by adding a more helium. Which ' adding a more helium. Which statement(s) isare) TRUE? A) The number of moles of helium doubled. B)...
느 - K L M N O Р Q R S B с D E F...
느 - K L M N O Р Q R S B с D E F G H 4 A sample of households provided the following information about their Per Capita Income. 5 Use Excel to construct a percent frequency distribution table and graph. 6 Provide an appropriate label for each of the horizontal and vertical axes. 7 Make your first class "30,000-34,999" 8 Place the frequency distribution table and histogram within the highlighted box below. 9 Per Capita 10...
G F D C B A Name: M4 Assignment: Periodic System Inventory Cost Flows 1 show...
G F D C B A Name: M4 Assignment: Periodic System Inventory Cost Flows 1 show how you arrived at your answers, with Canvas. Enter your answers in the spaces provided below. Be sure t Excel formulas or calculations by hand. Submit your assignment to the M4 assignment page 4 Ein Company began operations in February 2013. Ein's accounting records provide the following data for the remainder 5 2013 for one of the items the company sells. 6 7 Extended...
0.150 g benzophenone
0.100 g NaBH4
eagaph Show the theoretical result of the reactants and the product + Na,BO (CHszCHOH 1) For A al Calculate the formule molecular b) Molar mass i/mel ci Amount a Moles e) m 21 Fors a) Calculate the formuke mokcular bl Molar mass (mo c) Amount d] Moles 4) Calculate the formuk mobcua B) Molar mass (gimol co Amoune ig DI Moles El m A) Calculate the formde motecula B) Molar mass ie/mal Q Amount...
3) Calculate the percentage by mass of hydrogen in PtCl2(NH3)2 A) 0.672 B) 2.016 C) 1.008 D) 0.034 E) 1.558 4) How many molecules of CH4 are in 48.2 g of this compound? A) 1.81 x 1024 B) 4.00 C) 2.00 x 1023 D) 4.64 x 1026 E) 5.00 x 10-24 5) A sample of CH2F2 with a mass of 19 g contains A) 9.5 B) 3.3 * 1024 C) 2.2 x 1023 atoms of F. D) 4.4 x 1023...
А - B с D E F G H J K L Points 95% Confidence Interval for Average Age of Online College Students: 1 Age 2 3 4 5 Sample Mean: Sample St. Dev: Sample Size: 31.29 10.18 21.9 mil 1 6 7 2 Distribution: T-Distribution 2 Critical Value: *2 decimals 2 1 1 Margin of Error: Lower Bound: Upper Bound: *2 decimals Calculation: *2 decimals Calculation: *2 decimals Calculation: 2 Interpret 95% Confidence interval for Proportion of Male Online...
Hallo B I U a. Av obca v ili u A1 fx Amount B C D E F G 1 اهم الا Amount 2 20.50 3 14.63 23.77 29.96 6 29.49 7 32.70 8 9.20 9 20.89 10 28.87 11 15.78 12 18.16 13 12.16 14 11.22 15 16.43 16 17.66 17 9.59 18 18.89 19 19.88 20 23.11 21 20.11 22 20.34 23 20.08 24 30.36 25 21.79 26 21.18 27 19.22 28 34.13 29 27.49 30 36.55 31...
Е. попе E. 0.733 and 1.324 14. the molar mass of toluene is 92.6 gmol, how much tokuene is needed to depress the freezing point of 200 g of benzene by 047C? K 5.12 Cm a The vapor pressure of pure water at 26 "C is 25.2 torr. What is he vapor pressure of a solution that contains 16.0 g of glucose (CaHuO) dissolved in 80 g of water? A. 1.7g A. 14.1 tor B. 17g B. 24.7 torm C....
39) What property of liquids explains the formation of leaves? A) surface tension B) adhesion C) viscosity D) vapor pressure E) None of the choices are correct. mation of spherical water droplets on green 3 9) - um at constant pressure and temperature has the volume 40) 40) A balloon containing helium at constant pres doubled by adding a more helium. Which ' adding a more helium. Which statement(s) isare) TRUE? A) The number of moles of helium doubled. B)...
느 - K L M N O Р Q R S B с D E F G H 4 A sample of households provided the following information about their Per Capita Income. 5 Use Excel to construct a percent frequency distribution table and graph. 6 Provide an appropriate label for each of the horizontal and vertical axes. 7 Make your first class "30,000-34,999" 8 Place the frequency distribution table and histogram within the highlighted box below. 9 Per Capita 10...
G F D C B A Name: M4 Assignment: Periodic System Inventory Cost Flows 1 show how you arrived at your answers, with Canvas. Enter your answers in the spaces provided below. Be sure t Excel formulas or calculations by hand. Submit your assignment to the M4 assignment page 4 Ein Company began operations in February 2013. Ein's accounting records provide the following data for the remainder 5 2013 for one of the items the company sells. 6 7 Extended...
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