Homework Answers
(a) K2O - potassium oxide, H2S - hydrogen sulphide ,CO - carbon monoxide,PH3-Phosphorus trihydride, CH4 -methyl hydride
(b) K2O - dipotassium monoxide, H2S -Dihydrogen monosulfide
(c) CO - carbon monoxide,K2O - dipotassium monoxide, H2S -Dihydrogen monosulfide
(d) CH4 -methyl hydride
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This question has multiple parts. Work all the parts to get the most points. a Which...
[References) This question has multiple parts. Work all the parts to get the most points. An...
[References) This question has multiple parts. Work all the parts to get the most points. An energy of 7.0 x 10 J/atom is required to cause a copper atom on a metal surface to lose an electron a Calculate the longest possible wavelength of light that can ionize a copper atom. Wavelength D m Submit Submit Answer Submit Answer T ry Another Version Try Another Version 9 item attempts remaining iom attempts remaining Previous Next
This question has multiple parts. Work all the parts to get the most points. a Consider...
This question has multiple parts. Work all the parts to get the most points. a Consider the reaction: Ca(s) +2 H20(1) - Ca(OH)2(aq) +2H2(g) AH:º(kJ/mol -285.83 -1002.82 S°(J/K) mol 41.59 69.95 -74.5 130.7 What are the values of AH°, ASand AG° AH° kJ/mol AS° = J/K.mol AG° = kJ/mol Submit Submit Answer Try Another Version 6 item attempts remaining
This question has multiple parts. Work all the parts to get the most points How many...
This question has multiple parts. Work all the parts to get the most points How many molecules are in each of the following? a 3.5 mol of TNT, C7H3N306 molecules (b one drop (0.0500 g) of water molecules C 3.9 x 10 g of aspirin, Cg HgO4 molecules Try Another Version 10 item attempts remaining Submit Answer Ethyl chloride is prepared by the reaction of chlorine with ethane according to the following balanced equation C2He(g)+Cl2(g) Ethane C2H5CI()+HCI(g) Ethyl chloride When...
This question has multiple parts. Work all the parts to get the most points. Coal and...
This question has multiple parts. Work all the parts to get the most points. Coal and other fossil fuels usually contain sulfur compounds that produce sulfur dioxide, SO2, when burned. One possible way to remove the sulfur dioxide is to pass the combustion gases into a tower packed with magnesium oxide, MgO. Write the equation for the reaction. (Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aq) or (s). If a box is not...
This question has multiple parts. Work all the parts to get the most points. Protein X...
This question has multiple parts. Work all the parts to get the most points. Protein X contains a remarkably long a-helix with 59 residues. a How long is this a-helix (in nm)? (The helix repeats every 0.54 nm (3.6 amino acid residues), and the distance along the helical axis between residues is 0.15 nm.) nm Submit Submit Answer Try Another Version 10 item attempts remaining
This question has multiple parts. Work all the parts to get the most points. How many...
This question has multiple parts. Work all the parts to get the most points. How many grams of solute are present in each of the following aqueous solutions? a 575 mL of a 2.40 M solution of nitric acid, HNO3- b 1.65 L of a 0.284 M solution of alanine, CzH7NO2. C 320 mL of a 8.7x10-3 M solution of calcium sulfate, CaSO4. Sunser Try Another Version 8 item attempts remaining
(References) This question has multiple parts. Work all the parts to get the most points. The...
(References) This question has multiple parts. Work all the parts to get the most points. The reaction 2NO() + 2H2(g) → N (9) + 2H20(9) was studied at 904°C, and the data in the table were collected, Reaction Rate of Trial Concentration Appearance of Ne (mol/L) (mol/L-s) [NO] [H.] 1 0.420 0.122 0.136 2 0.210 0.122 0.0339 3 0.210 0.244 0.0678 4 0.106 0.488 0.0339 a which two reaction trials can be used to determine the order of the reaction...
This question has multiple parts. Work all the parts to get the most points. Specify which...
This question has multiple parts. Work all the parts to get the most points. Specify which of the following are oxidation-reduction reactions, and if it is, identify the oxidizing agent, the reducing agent, the substance being oxidized, and the substance being reduced. If it is not, select No and leave the following boxes blank. Express your answers as a chemical formulas. Omit states-of-matter. Zn(s)+2Ag (aq)2 Ag(a) +Zn2+ (aq) Redox? Oxidizing Agent Reducing Agent Substance Oxidized Substance Reduced HBr(g) +NH, (g)NH4Br(s)...
This question has multiple parts. Work all the parts to get the most points. A gas...
This question has multiple parts. Work all the parts to get the most points. A gas sample is under an initial set of conditions (1) and is then changed to a final set of conditions parameter for this gas sample. . Use the combined gas law to calculate the unknown final P2.30 atm V 3.60 L Ti 287K P, ? atm V S.00 L Ty 480. K P = atm P, 4.05 atm V 1311 71 286K P/ 2.02 atm...
This question has multiple parts. Work all the parts to get the most points. Assign the...
This question has multiple parts. Work all the parts to get the most points. Assign the pka's -1.68 , 2.45, and 4.78 to the compounds shown below. CH3CH2COOH A: SOH B: NECCH,COOH C: Which of the compounds has the pka = -1.68 : ОА OB Ос Which of the compounds has the pKa = 2.45 : ОА OB Ос Which of the compounds has the pka = 4.78: OA OB Ос
[References) This question has multiple parts. Work all the parts to get the most points. An energy of 7.0 x 10 J/atom is required to cause a copper atom on a metal surface to lose an electron a Calculate the longest possible wavelength of light that can ionize a copper atom. Wavelength D m Submit Submit Answer Submit Answer T ry Another Version Try Another Version 9 item attempts remaining iom attempts remaining Previous Next
This question has multiple parts. Work all the parts to get the most points. a Consider the reaction: Ca(s) +2 H20(1) - Ca(OH)2(aq) +2H2(g) AH:º(kJ/mol -285.83 -1002.82 S°(J/K) mol 41.59 69.95 -74.5 130.7 What are the values of AH°, ASand AG° AH° kJ/mol AS° = J/K.mol AG° = kJ/mol Submit Submit Answer Try Another Version 6 item attempts remaining
This question has multiple parts. Work all the parts to get the most points How many molecules are in each of the following? a 3.5 mol of TNT, C7H3N306 molecules (b one drop (0.0500 g) of water molecules C 3.9 x 10 g of aspirin, Cg HgO4 molecules Try Another Version 10 item attempts remaining Submit Answer Ethyl chloride is prepared by the reaction of chlorine with ethane according to the following balanced equation C2He(g)+Cl2(g) Ethane C2H5CI()+HCI(g) Ethyl chloride When...
This question has multiple parts. Work all the parts to get the most points. Coal and other fossil fuels usually contain sulfur compounds that produce sulfur dioxide, SO2, when burned. One possible way to remove the sulfur dioxide is to pass the combustion gases into a tower packed with magnesium oxide, MgO. Write the equation for the reaction. (Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aq) or (s). If a box is not...
This question has multiple parts. Work all the parts to get the most points. Protein X contains a remarkably long a-helix with 59 residues. a How long is this a-helix (in nm)? (The helix repeats every 0.54 nm (3.6 amino acid residues), and the distance along the helical axis between residues is 0.15 nm.) nm Submit Submit Answer Try Another Version 10 item attempts remaining
This question has multiple parts. Work all the parts to get the most points. How many grams of solute are present in each of the following aqueous solutions? a 575 mL of a 2.40 M solution of nitric acid, HNO3- b 1.65 L of a 0.284 M solution of alanine, CzH7NO2. C 320 mL of a 8.7x10-3 M solution of calcium sulfate, CaSO4. Sunser Try Another Version 8 item attempts remaining
(References) This question has multiple parts. Work all the parts to get the most points. The reaction 2NO() + 2H2(g) → N (9) + 2H20(9) was studied at 904°C, and the data in the table were collected, Reaction Rate of Trial Concentration Appearance of Ne (mol/L) (mol/L-s) [NO] [H.] 1 0.420 0.122 0.136 2 0.210 0.122 0.0339 3 0.210 0.244 0.0678 4 0.106 0.488 0.0339 a which two reaction trials can be used to determine the order of the reaction...
This question has multiple parts. Work all the parts to get the most points. Specify which of the following are oxidation-reduction reactions, and if it is, identify the oxidizing agent, the reducing agent, the substance being oxidized, and the substance being reduced. If it is not, select No and leave the following boxes blank. Express your answers as a chemical formulas. Omit states-of-matter. Zn(s)+2Ag (aq)2 Ag(a) +Zn2+ (aq) Redox? Oxidizing Agent Reducing Agent Substance Oxidized Substance Reduced HBr(g) +NH, (g)NH4Br(s)...
This question has multiple parts. Work all the parts to get the most points. A gas sample is under an initial set of conditions (1) and is then changed to a final set of conditions parameter for this gas sample. . Use the combined gas law to calculate the unknown final P2.30 atm V 3.60 L Ti 287K P, ? atm V S.00 L Ty 480. K P = atm P, 4.05 atm V 1311 71 286K P/ 2.02 atm...
This question has multiple parts. Work all the parts to get the most points. Assign the pka's -1.68 , 2.45, and 4.78 to the compounds shown below. CH3CH2COOH A: SOH B: NECCH,COOH C: Which of the compounds has the pka = -1.68 : ОА OB Ос Which of the compounds has the pKa = 2.45 : ОА OB Ос Which of the compounds has the pka = 4.78: OA OB Ос
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