Chemistry concepts and calculations

A compound A has prominent infrared absorptions at 1050, 1786, and 1852 cm-1 and

A compound A has prominent infrared absorptions at 1050, 1786, and 1852 cm-1 and shows a single absorp in the proton NMR spectrum at delta 3.00. When heated gently with methanol, …

A compound A has prominent infrared absorptions at 1050, 1786, and 1852 cm-1 and

A compound A has prominent infrared absorptions at 1050, 1786, and 1852 cm-1 and shows a single absorp in the proton NMR spectrum at delta 3.00. When heated gently with methanol, …

A compound A with molecular formula C 20 H 20 ClBrFN 5 O 3 S is hydrogenated to

A compound A with molecular formula C20H20ClBrFN5O3S is hydrogenated to give a compound B with molecular formula C20H36ClBrFN5O3S. How many rings does compound A have? Assume that…

A compound X and water form a heterogeneous mixture. The vapor pressures of X an

A compound X and water form a heterogeneous mixture. The vapor pressures of X and water at various temperatures are shown in the table below: Temperature (C) Vapor Pressure of X 7…

A compound X contains 63.3% manganese and 36.7% oxygen by mass. When X is heated

A compound X contains 63.3% manganese and 36.7% oxygen by mass. When X is heated, oxygen gas is evolved and a new compound Y is containing 72.0% manganese and 28.0% oxygen formed.…

A compound consisting of an element having a low ionization energy and a second

A compound consisting of an element having a low ionization energy and a second element having a large electronegativity is likely to have Choose one answer. Which of the followin…

A compound containing carbon, hydrogen and oxygen has been analyzed. It contains

A compound containing carbon, hydrogen and oxygen has been analyzed. It contains 69.72% of carbon and 18.58% of oxygen. If the molecular weight of the compound is 86.13, what is i…

A compound containing only C, H, and O, was extracted from the bark of the sassa

A compound containing only C, H, and O, was extracted from the bark of the sassafras tree. The combustion of 83.3 mg produced 226 mgof Co2 and 46.3 mg of H20.The olar mass of the …

A compound containing only C, H, and O, was extracted from the bark of the sassa

A compound containing only C, H, and O, was extracted from the bark of the sassafras tree. The combustion of 27.7 mg produced 75.2 mg of CO2 and 15.4 mg of H20. The molar mass of …

A compound contains 15.94% boron with the remainder being fluorine. What is the

A compound contains 15.94% boron with the remainder being fluorine. What is the empirical formula of the compound? a. BF b. BF_2 c. B_2F_3 d. BF_1 e. B_2F_5 Phosphorus trichloride…

A compound contains only C, H, and O. To analyze the compound, you determine its

A compound contains only C, H, and O. To analyze the compound, you determine its empirical formula by analysis for C and H, and its molar mass by freezing point depression. (a) Wh…

A compound contains only carbon, hydrogen, and oxygen. Combustion of 16.51 g of

A compound contains only carbon, hydrogen, and oxygen. Combustion of 16.51 g of the compound yields 24.21 g of CO2and 9.909 g of H2O. The molar mass of the compound is 150.13 g/mo…

A compound contains only carbon, hydrogen, and oxygen. Combustion of 65.76 g of

A compound contains only carbon, hydrogen, and oxygen. Combustion of 65.76 g of the compound yields 96.38 g of CO2 and 39.46 g of H2O. The molar mass of the compound is 90.078 g/m…

A compound contains only carbon, hydrogen, and oxygen. Combustion of 86.30 g of

A compound contains only carbon, hydrogen, and oxygen. Combustion of 86.30 g of the compound yields 129.4 g of CO2 and 35.31 g of H2O. The molar mass of the compound is 176.1 g/mo…

A compound contains only carbon, hydrogen, and oxygen. Combustion of 86.30 g of

A compound contains only carbon, hydrogen, and oxygen. Combustion of 86.30 g of the compound yields 129.4 g of CO2 and 35.31 g of H2O. The molar mass of the compound is 176.1 g/mo…

A compound contains only carbon, hydrogen, and oxygen. Combustion of 86.30 g of

A compound contains only carbon, hydrogen, and oxygen. Combustion of 86.30 g of the compound yields 129.4 g of CO2 and 35.31 g of H2O. The molar mass of the compound is 176.1 g/mo…

A compound contains only carbon, hydrogen, and oxygen. Combustion of 86.30 g of

A compound contains only carbon, hydrogen, and oxygen. Combustion of 86.30 g of the compound yields 129.4 g of CO2 and 35.31 g of H2O. The molar mass of the compound is 176.1 g/mo…

A compound contains only carbon, hydrogen, nitrogen and oxygen. Combustion of 0.

A compound contains only carbon, hydrogen, nitrogen and oxygen. Combustion of 0.314 g of the compound produced 0.426 g CO2, and 0.0620 g H2O. In another experiment it is found tha…

A compound contains only carbon, hydrogen, nitrogen, and oxygen. Combustion of 0

A compound contains only carbon, hydrogen, nitrogen, and oxygen. Combustion of 0.157g of the compound produced 0.213g CO2 and 0.0310g of H2O. In another experiment, 0.103g of the …

A compound decomposes by a first-order process. If 17.0% of the compound decompo

A compound decomposes by a first-order process. If 17.0% of the compound decomposes in 60.0 minutes, the half-life the compound is 223 minutes 325 minutes 198 minutes 181 minutes …

A compound formed between an alkaline earth element, M and a halogen, X, will mo

A compound formed between an alkaline earth element, M and a halogen, X, will most likely be (A) ionic with empirical formula M_2X. (B) covalent with molecular formula M_2X. (C) c…

A compound formula XCl3 reacts with aqueous AgNO3 to yield solid AgCl according

A compound formula XCl3 reacts with aqueous AgNO3 to yield solid AgCl according to the following equation: XCl3(aq)+3AgNO3(aq)?X(NO3)3(aq)+3AgCl(s) When a solution containing 0.52…

A compound has molar of 86 g/mol and has the percent composition (by mass) of a

A compound has molar of 86 g/mol and has the percent composition (by mass) of a 55.8% C, 37.2% O, and 7.0% H. Determine the empirical formula: a. C H O_2 b. C H O c. C H O d. C H …

A compound has specific rotation of -39.0. A solution of the compound (0.187 g/m

A compound has specific rotation of -39.0. A solution of the compound (0.187 g/mL) has an observed rotation of -6.52 degrees when placed in a polarimeter tube 10 cm long. What is …

A compound has the empirical formula CHCI. A 256-mL flask, at 373 K and 750. tor

A compound has the empirical formula CHCI. A 256-mL flask, at 373 K and 750. torr. contains 0.800 g of the gaseous compound. Give the molecular formula The heat capacity of a bomb…

A compound has the empirical formula SF_4. At 20.0 degree C, 0.100 g of the gase

A compound has the empirical formula SF_4. At 20.0 degree C, 0.100 g of the gaseous compound occupies a volume of 22.1 mL and exerts a pressure of 1.02 atm. What is the molecular …

A compound has the following composition: 48.0% carbon, 4 0% Determine 12 8% sul

A compound has the following composition: 48.0% carbon, 4 0% Determine 12 8% sulfur and 12 8% oxygen The molecular mass is found to be 250. amu Determine the molecular formula for…

A compound has the formula C 8 H 8 and does not contain any double or triple bon

A compound has the formula C8H8 and does not contain any double or triple bonds. All the carbon atoms are chemically identical and all the hydrogen atoms are chemically identical.…

A compound has the formula Mg 3 X 2 . If1.87g of X combines with 4.86 g of magne

A compound has the formula Mg3X2. If1.87g of X combines with 4.86 g of magnesium, what is the atomicweight of X? a. 7.0 b. 14.0 c. 21.0 d. 28.0 e. 32.0 This question was already o…

A compound is 27.3 % carbon and 72.7% oxygen . The molar mass is known to be 44.

A compound is 27.3 % carbon and 72.7% oxygen . The molar mass is known to be 44.01 g/mol. What are the empirical and molecular formulae for this compound ? A.Empirical and Molecul…

A compound is 40.0 % C , 6.70 % H , and 53.3 % O by mass. Assume that we have a

A compound is 40.0% C, 6.70% H, and 53.3% O by mass. Assume that we have a 100.-g sample of this compound. What are the subscripts in the empirical formula of this compound? Enter…

A compound is analyzed and found to contain 68.54% carbon, 8.63% hydrogen, and 2

A compound is analyzed and found to contain 68.54% carbon, 8.63% hydrogen, and 22.83% oxygen. The molecular weight of this compound is known to be approximately 140 g/mol. What is…

A compound is composed of the elements C, H and N. a) Combustion analysis of a 5

A compound is composed of the elements C, H and N. a) Combustion analysis of a 5.72 gsample ofthe compound gave 10.5 g of carbon dioxide and 1.72 gof water. What is the empirical …

A compound is found to be soluble in water. it was also found that addition of a

A compound is found to be soluble in water. it was also found that addition of acid to an aqueous solution of this compound resulted in the formation of carbon dioxide. which one …

A compound is found to contain 31.14 % sulfur and 68.83 % chlorine by weight. To

A compound is found to contain 31.14 % sulfur and 68.83 % chlorine by weight. To answer the question, enter the elements in the order presented above. QUESTION 1: The empirical fo…

A compound is known to contain 40.45% carbon and 35.90% oxygen bymass. Each mole

A compound is known to contain 40.45% carbon and 35.90% oxygen bymass. Each molecule contains two atoms of oxygen. the molarmass is 89.079 g/mol Question: How many carbons are the…

A compound is soluble in water. It shows negative for the 2, 4-DNPH test and neg

A compound is soluble in water. It shows negative for the 2, 4-DNPH test and negative for Chromic Acid test. What do you think the compound is? a) 2-methylpropan-2-ol b) Butyralde…

A compound of molecular formula C3H60 forms a yellow precipitate with 2,4-dinitr

A compound of molecular formula C3H60 forms a yellow precipitate with 2,4-dinitrophenyl-hydrazine reagent and gives a silver mirror with Tollens' reagent. Based on this informatio…

A compound of molecular formula C3H60 forms a yellow precipitate with 2,4-dinitr

A compound of molecular formula C3H60 forms a yellow precipitate with 2,4-dinitrophenyl-hydrazine reagent and gives a silver mirror with Tollens' reagent. Based on this informatio…

A compound of molecular formula c Ho forms a yellow precipitate with 2, 4-dinitr

A compound of molecular formula c Ho forms a yellow precipitate with 2, 4-dinitrophenylhydrazine r and gives a silver with Tollens gent. Based on this information, draw the struct…

A compound that contains only C and H was burned in excess O2 to give CO2 and H2

A compound that contains only C and H was burned in excess O2 to give CO2 and H2O. When 0.270 g of the compound was burned, the amount of CO2 formed reacted completely with 20.0 m…

A compound used in the manufacture of Saran is 24.7 % H, and 73.2 % Cl by mass.

A compound used in the manufacture of Saran is 24.7 % H, and 73.2 % Cl by mass. The storage of 3.557 g of the compound in a 755-mL vessel at 0 degree C results in a pressure of 1.…

A compound was isolated and determined to have a molecular formula of C_6H_6Br_2

A compound was isolated and determined to have a molecular formula of C_6H_6Br_2O by high resolution mass spectrometry. Use the following spectra to elucidate the structure of the…

A compound which contains only carbon, hydrogen, and sulfur is burned in oxygen

A compound which contains only carbon, hydrogen, and sulfur is burned in oxygen under such conditions that the individual volumes of the reactants and products can be measured at …

A compound with IR bands at 3025 (m), 2915 (s), 2830 (m), 2705 (m), 1725 (s), 16

A compound with IR bands at 3025 (m), 2915 (s), 2830 (m), 2705 (m), 1725 (s), 1645 (w) cm^-1; and has 7 peaks in the ^13C NMR including peaks at 124, 129 and 205 ppm; DEPT 90: 124…

A compound with a molecular formula C_5 H_12 has the following \'H NMR spectrum.

A compound with a molecular formula C_5 H_12 has the following 'H NMR spectrum. Which of the following structures is consistent with this spectrum? I II III IV none of these How m…

A compound with a molecular mass of 287.29 was dissolved in a 5 mL volumetric fl

A compound with a molecular mass of 287.29 was dissolved in a 5 mL volumetric flask. A 1.00 mL aliquot was withdrawn, placed in a 10 mL volumetric flask, and diluted to the mark. …

A compound with a molecular mass of 287.29 was dissolved in a 5 mL volumetric fl

A compound with a molecular mass of 287.29 was dissolved in a 5 mL volumetric flask. A 1.00 mL aliquot was withdrawn, placed in a 10 mL volumetric flask, and diluted to the mark. …

A compound with a molecular weight of 292.16 was dissolved in a 5-ml volumetric

A compound with a molecular weight of 292.16 was dissolved in a 5-ml volumetric flask. A 1.00-mLaliquat was withdrawn, placed in a 10-mL volumetric flask, and diluted to the mark.…

A compound with a molecular weight of 292.16 was dissolved in a 5-ml volumetric

A compound with a molecular weight of 292.16 was dissolved in a 5-ml volumetric flask. A 1.00-mLaliquat was withdrawn, placed in a 10-mL volumetric flask, and diluted to the mark.…