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25. FeO, (molar mass = 159.7 g/mol) reacts with CO (molar maw28.0 /mol) according to the...
21. What Kelvin temperature reading equals 61.2°F? A. -256.8 K B. 325.6 K C.-220.4 K D....
21. What Kelvin temperature reading equals 61.2°F? A. -256.8 K B. 325.6 K C.-220.4 K D. 324.8 K E 289 2 K 22. Assign idation numbers, then determine which of the following is true 81 +5H,, 41, +450; +41,0 A. lodide ion is ridined B. lodide lon is the acidizing agent C. Sulfate lon is oxidized D. Hydrosulfuric acid (H,S) is reduced E. Sulfuric acid (H,SO) is the reducing 25. Fr, 0, (molar mas 159.7 g/mol) reacts with CO (molar...
When 780 g of benzene (Molar mass = 78 g/mol) reacts with 750 mL of concentrated...
When 780 g of benzene (Molar mass = 78 g/mol) reacts with 750 mL of concentrated HNO3 (16 M) and 750 mL of H2SO4 (18 M), 1000 g of nitrobenzene (molar mass = 123 g/mol) and 250 g of an unknown compound with a high boiling point are obtained. c. Give the name of the most probable side product with the high melting point. Explain why. e. Supposing the crystalline compound (250 g) has the formula C6H4N2O4, calculate the yield...
P27. (Sec. 16.6) What is the solubility, in g/L, of barium fluoride, BaF2, at 25 °C...
P27. (Sec. 16.6) What is the solubility, in g/L, of barium fluoride, BaF2, at 25 °C BaF:(s) Ba(a)+2F1(aq) Ksp 1.7x 106 a) 9.25 g/L b) 6.41 g/L c) 2.56 g/L d) 1.31 g/L e) 0.0752 g/L P28. (Sec. 16.6) What is the molar solubility of iron (III) hydroxide, Fe(OH), İn a 0.15 M solution of sodium hydroxide, NaOH? Fe(OH)s(s)Fe*(aq) +30H-'(aq) Ksp= 1.1 × 10-36 a) 0.00338 mol/L b) 3.25 x 10-34 mol/L c) 5.05×10-17mol/L d) 0.00955 mol/L e) 0.0875 mol/L
conversion factors needed: molar masses of O, and Ho, and molar ratio between Ozand Ho. Molar mass Oz: 2 x 16.00 g/...
conversion factors needed: molar masses of O, and Ho, and molar ratio between Ozand Ho. Molar mass Oz: 2 x 16.00 g/mol = 32.00 g/mol Molar mass HO: (2x 1,01 g/mol)*16.00 /mol 7HO-1.5 80xmor 2 mol No1802 1,0 52.00 gomolo 1 .689 = 1.7 HO Now let's try some problems Be sure to give your answers with the correct number of significant figures. 1. Over the years, the thermite reaction has been used for welding railroad rails, in incendiary bombs,...
may absorb 11. Carbon monoxide rcacts with oxygen to form carbon dionide 2 CO(g)+ 0(g)2 COg)...
may absorb 11. Carbon monoxide rcacts with oxygen to form carbon dionide 2 CO(g)+ 0(g)2 COg) In a 1.00 L flask, 4.30 atm of CO reacts with 2.50 atm of O. Assuming that the temperature remains constant, what is the final pressure in the flask? a. 4.30 atm b. 6.80 atm 1.80 atm d. 4.65 atm 2.50 atm c. e. 12. A balloon is filled with He gas to a volume of 2.10 L at 35 °C. The baloon is...
A sample of 2.00 g of the non-volatile compound urea, CO(NH2)2 (molar mass = 60 g/mol),...
A sample of 2.00 g of the non-volatile compound urea, CO(NH2)2 (molar mass = 60 g/mol), is dissolved in 20.0 grams of water. What is the vapor pressure of water above this solution? The vapor pressure of pure water at the temperature of the experiment is 0.150 atm. a. 0.045 atm b. 0.010 atm c. 0.038 atm d. 0.146 atm e. 0.150 atm
4. When 10 g of benzene (Molar mass 78 g/mol) reacts with 9 mL of concentrated HNO3 (16 M) and 9 ...
4. When 10 g of benzene (Molar mass 78 g/mol) reacts with 9 mL of concentrated HNO3 (16 M) and 9 mL of H2SO4 (18 M), 8.1 g of nitrobenzene (molar mass 123 g/mol) and 1.2 g of an unknown compound with a high boiling point are obtained. a. Identify the limiting reagent. b. Calculate the percent yield of nitrobenzene. c. Give the name and structure of the most probable side product with the high melting point. d. Explain, with...
5. What is the molecular weight (molar mass)of the common antacid calcium carbonate CaCO3? A) 100.9...
5. What is the molecular weight (molar mass)of the common antacid calcium carbonate CaCO3? A) 100.9 gimol B) 48.08 g/mol C) 17.0 g/'mol D) 4.00 x 102 g/mol E) 2.50 x 10 g/mol 6. Calculate the molar mass of rubidium carbonate, Rb CO A) 340.43 g/mol B) 255.00 g/mol C) 230.94 g/mol D) 145.47 gmol E) 113.48 g/mol 7. Balance the following equation: B) Cai(РО.h@ + 3SiOts) + 14C(s) 3CaSiOds) + į4COg) + Pa(s) -> 8. How many grams of...
30. A 4.98 g sample of aniline (C6H5NH2, molar mass - 64.3 g/mol) was combusted in...
30. A 4.98 g sample of aniline (C6H5NH2, molar mass - 64.3 g/mol) was combusted in a bomb calorimeter with a heat capacity of 4.25 kJ/°C. If the temperature rose from 29.5°C to 69.8°C, determine the value of ???comb for aniline. A. +7.81 x 103 kJ/mol B. -3.20 x 103 kJ/mol Cytl .71 x 103 kJ/mol D.-1.71 x 103 kJ/mol E. -7.81 x 103 kJ/mol Given w - 0, an exothermic reaction has the following. A. +?? and-AE
For CaF2 Kap = 3.9 x 10-" (molar mass = 78 g mol-') at 25°C. How...
For CaF2 Kap = 3.9 x 10-" (molar mass = 78 g mol-') at 25°C. How many grams of this salt can be dissolved in 100 mL water at 25°C? (A) 0.8 mg (B) 1.2 mg (C) 1.7 mg (D) 2.0 mg (E) 2.4 mg
21. What Kelvin temperature reading equals 61.2°F? A. -256.8 K B. 325.6 K C.-220.4 K D. 324.8 K E 289 2 K 22. Assign idation numbers, then determine which of the following is true 81 +5H,, 41, +450; +41,0 A. lodide ion is ridined B. lodide lon is the acidizing agent C. Sulfate lon is oxidized D. Hydrosulfuric acid (H,S) is reduced E. Sulfuric acid (H,SO) is the reducing 25. Fr, 0, (molar mas 159.7 g/mol) reacts with CO (molar...
P27. (Sec. 16.6) What is the solubility, in g/L, of barium fluoride, BaF2, at 25 °C BaF:(s) Ba(a)+2F1(aq) Ksp 1.7x 106 a) 9.25 g/L b) 6.41 g/L c) 2.56 g/L d) 1.31 g/L e) 0.0752 g/L P28. (Sec. 16.6) What is the molar solubility of iron (III) hydroxide, Fe(OH), İn a 0.15 M solution of sodium hydroxide, NaOH? Fe(OH)s(s)Fe*(aq) +30H-'(aq) Ksp= 1.1 × 10-36 a) 0.00338 mol/L b) 3.25 x 10-34 mol/L c) 5.05×10-17mol/L d) 0.00955 mol/L e) 0.0875 mol/L
conversion factors needed: molar masses of O, and Ho, and molar ratio between Ozand Ho. Molar mass Oz: 2 x 16.00 g/mol = 32.00 g/mol Molar mass HO: (2x 1,01 g/mol)*16.00 /mol 7HO-1.5 80xmor 2 mol No1802 1,0 52.00 gomolo 1 .689 = 1.7 HO Now let's try some problems Be sure to give your answers with the correct number of significant figures. 1. Over the years, the thermite reaction has been used for welding railroad rails, in incendiary bombs,...
may absorb 11. Carbon monoxide rcacts with oxygen to form carbon dionide 2 CO(g)+ 0(g)2 COg) In a 1.00 L flask, 4.30 atm of CO reacts with 2.50 atm of O. Assuming that the temperature remains constant, what is the final pressure in the flask? a. 4.30 atm b. 6.80 atm 1.80 atm d. 4.65 atm 2.50 atm c. e. 12. A balloon is filled with He gas to a volume of 2.10 L at 35 °C. The baloon is...
4. When 10 g of benzene (Molar mass 78 g/mol) reacts with 9 mL of concentrated HNO3 (16 M) and 9 mL of H2SO4 (18 M), 8.1 g of nitrobenzene (molar mass 123 g/mol) and 1.2 g of an unknown compound with a high boiling point are obtained. a. Identify the limiting reagent. b. Calculate the percent yield of nitrobenzene. c. Give the name and structure of the most probable side product with the high melting point. d. Explain, with...
5. What is the molecular weight (molar mass)of the common antacid calcium carbonate CaCO3? A) 100.9 gimol B) 48.08 g/mol C) 17.0 g/'mol D) 4.00 x 102 g/mol E) 2.50 x 10 g/mol 6. Calculate the molar mass of rubidium carbonate, Rb CO A) 340.43 g/mol B) 255.00 g/mol C) 230.94 g/mol D) 145.47 gmol E) 113.48 g/mol 7. Balance the following equation: B) Cai(РО.h@ + 3SiOts) + 14C(s) 3CaSiOds) + į4COg) + Pa(s) -> 8. How many grams of...
30. A 4.98 g sample of aniline (C6H5NH2, molar mass - 64.3 g/mol) was combusted in a bomb calorimeter with a heat capacity of 4.25 kJ/°C. If the temperature rose from 29.5°C to 69.8°C, determine the value of ???comb for aniline. A. +7.81 x 103 kJ/mol B. -3.20 x 103 kJ/mol Cytl .71 x 103 kJ/mol D.-1.71 x 103 kJ/mol E. -7.81 x 103 kJ/mol Given w - 0, an exothermic reaction has the following. A. +?? and-AE
For CaF2 Kap = 3.9 x 10-" (molar mass = 78 g mol-') at 25°C. How many grams of this salt can be dissolved in 100 mL water at 25°C? (A) 0.8 mg (B) 1.2 mg (C) 1.7 mg (D) 2.0 mg (E) 2.4 mg
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