Chemistry concepts and calculations
117302 questions • Page 399 / 2347
A compound with an empirical formula of C2H2O has a molar mass of 2168 g/mol. Wh
A compound with an empirical formula of C2H2O has a molar mass of 2168 g/mol. What is the molecular formula? 7. A compound consisting only of Mn (manganese, 25th element in the pe…
A compound with formula C_5H_10O gives two signals only, both singlets, in the ^
A compound with formula C_5H_10O gives two signals only, both singlets, in the ^1H NMR spectrum. Which of these structures is a possible one for this compound This substituent dea…
A compound with formula C_7H_14O undergoes dehydration to form only ONE compound
A compound with formula C_7H_14O undergoes dehydration to form only ONE compound with the formula C_7H_12 (Hoffman product not observed). This product is less dense than water, re…
A compound with formula RuCl3?5H2O is dissolved in water, forming a solution tha
A compound with formula RuCl3?5H2O is dissolved in water, forming a solution that is approximately the same color as the solid. Immediately after forming the solution, the additio…
A compound with molecular mass = 292.16 g/mol was dissolved in a 5.000 mL volume
A compound with molecular mass = 292.16 g/mol was dissolved in a 5.000 mL volumetric flask. A 1.000 mL aliquot was withdrawn, placed in a 10.000 mL flask and diluted to volume. Th…
A compound with on M* peak (also the base peaK) at 93 m/z shows the next largest
A compound with on M* peak (also the base peaK) at 93 m/z shows the next largest peak at 66 m/z. There is almost no peak at m/z of 27 (93-66). What is the mast likely reason? To g…
A compound with on M* peak (also the base peaK) at 93 m/z shows the next largest
A compound with on M* peak (also the base peaK) at 93 m/z shows the next largest peak at 66 m/z. There is almost no peak at m/z of 27 (93-66). What is the mast likely reason? To g…
A compound with the empirical formula CH2 has a molar mass of 98 g/mol. What is
A compound with the empirical formula CH2 has a molar mass of 98 g/mol. What is the molecular formula for this compound? 2-A compound is 54.53% C, 9.15% H, and 36.32% O by mass. W…
A compound with the molecular formula C_2H_2O shows a proton NMR spectrum with c
A compound with the molecular formula C_2H_2O shows a proton NMR spectrum with chemical shifts at the following 5 values: 7.2 ppm (S H's) 23 ppm (2H's) 3 ppm (1 H) Suggest a struc…
A compound, C20H28O, produces a 1H NMR spectrum with 11 distinct signals. The st
A compound, C20H28O, produces a 1H NMR spectrum with 11 distinct signals. The steps made by the integral trace measures 52, 17, 17, 26, 17, 25, 26, 9, 9, 35, and 8 mm. Complete th…
A compounds analyzes to be 61.7% Cl, 26.72% P, and 12.11% N. 1.2952 g of the com
A compounds analyzes to be 61.7% Cl, 26.72% P, and 12.11% N. 1.2952 g of the compound was dissolved in 15.00 ml of benzene (density of benzene=.879 g/ml). Producing a solution fre…
A compund containing the elements C, H, N, and O is analyzed.When a 1.2359g samo
A compund containing the elements C, H, N, and O is analyzed.When a 1.2359g samole is burned in excess oxygem, 2.241 g ofCO2(g) is formed. The combustion analysis also showedthat …
A computational molecular modeling program was used to determine the energy for
A computational molecular modeling program was used to determine the energy for two pomble geometries of the molecule xeF_4 Geometry A was found to have a lower energy than Geomet…
A computer has 64-KB virtual address space and 32-KB physical address space. The
A computer has 64-KB virtual address space and 32-KB physical address space. The page size is 4 KB. At an instant ti , the mapping between virtual address space and physical addre…
A computer has 64-KB virtual address space and 32-KB physical address space. The
A computer has 64-KB virtual address space and 32-KB physical address space. The page size is 4 KB. At an instant ti , the mapping between virtual address space and physical addre…
A computer hasn\'t been connected to the internet for 2 weeks but has still been
A computer hasn't been connected to the internet for 2 weeks but has still been used. It's running Windows 8 and various notices are complaining about virus definitions and update…
A computer with 2^c memory addresses and a byte-addressed memory has an implemen
A computer with 2^c memory addresses and a byte-addressed memory has an implementation of virtual memory with page size 2^p bytes and page table entries that each occupy 2^e bits.…
A concentrated solution is 68.4% nitric acid in water and has a density of 1.39
A concentrated solution is 68.4% nitric acid in water and has a density of 1.39 g/mL. How many mL of this nitric solution will completely and exactly react with 143 g of Cu metal?…
A concentrated solution is 68.4% nitric acid in water and has a density of 1.39
A concentrated solution is 68.4% nitric acid in water and has a density of 1.39 g/mL. How many mL of this nitric solution will completely and exactly react with 143 g of Cu metal?…
A concentrated sulfuric acid solution is 65.0% H_2SO_4 by mass and has a density
A concentrated sulfuric acid solution is 65.0% H_2SO_4 by mass and has a density of 1.55 g/ml. at 20 degree C. What is the mass of 3.00 L of the concentrated sulfuric acid solutio…
A concentrated sulfuric acid solution is 65.0% H_2SO_4 by mass and has a density
A concentrated sulfuric acid solution is 65.0% H_2SO_4 by mass and has a density of 1.55 g/ml. at 20 degree C. What is the mass of 3.00 L of the concentrated sulfuric acid solutio…
A concentration cell Is constructed by placing identical Cu electrodes in two Cu
A concentration cell Is constructed by placing identical Cu electrodes in two Cu2+ solutions. If the concentrations of the two Cu2+ solutions are 1.0 M and 0.002 M, calculate the …
A concentration cell at 298K consists of two Cu/Cu^2+ electrodes in two separate
A concentration cell at 298K consists of two Cu/Cu^2+ electrodes in two separate compartments connected by a salt bridge. you know that the solution in one compartment is 1.0 M Cu…
A concentration cell based on the following half reaction at 323K Ag+ + e- --> A
A concentration cell based on the following half reaction at 323K Ag+ + e- --> Ag SRP = 0.800V has initial concentrations of 1.27M Ag+, 0.377 Ag+, and a potential of 0.03380V a…
A concentration cell consists of two Sn/Sn 2+ electrodes. The electrolyte in com
A concentration cell consists of two Sn/Sn2+ electrodes. The electrolyte in compartment A is 0.21 M Sn(NO3)2. The electrolyte in B is 0.84 M Sn(NO3)2. Which electrode is the catho…
A concentration cell constructed from two hydrogen electrodes, both with P H2 =
A concentration cell constructed from two hydrogen electrodes, both with PH2 = 1.00. One electrode is immersed in pure H2O and the other in 6.0 M hydrochloric acid. What is the em…
A concentration cell contains electrodes made of the same metal and solutions co
A concentration cell contains electrodes made of the same metal and solutions containing the same ions but at different concentrations. Consider Zn electrode in 0.1 M ZnSO4 soluti…
A concentration cell is constructed by placing identical Co electrodes in two Cu
A concentration cell is constructed by placing identical Co electrodes in two Cu2 + solutions. Cu/Cu^2+ (0.002 M) || Cu^2 + (1 M)/Cu If the concentrations of the two Cu2 + solutio…
A concentration cell is constructed by using the same half-reaction for both the
A concentration cell is constructed by using the same half-reaction for both the cathode and anode. What is E^0 for a concentration cell that combines silver electrodes in contact…
A concentration cell is constructed by using the same half-reaction for both the
A concentration cell is constructed by using the same half-reaction for both the cathode and anode. What is E^infinity, for a concentration cell that combines silver electrodes in…
A concentration cell is constructed from two hydrogen electrodes connected by a
A concentration cell is constructed from two hydrogen electrodes connected by a salt bridge. The pressure of H2 is 1.00 atm in each hydrogen electrode. One electrode is immersed i…
A concentration cell is made up of the Cu2+/Cu couple, where the Cu2+ concentrat
A concentration cell is made up of the Cu2+/Cu couple, where the Cu2+ concentrations are 1.0M and 0.10 M. It follows that the anode compartment contains the ________ which _______…
A concentration cell is made using two Ni electrodes with Ni 2+ concentrations o
A concentration cell is made using two Ni electrodes with Ni2+ concentrations of 1.0 M and 1.0x10-4 M in the two half-cells. Which of these statements about this cell is false? Th…
A concentration of 800 ppm by volume of CO is considered lethal to humans. Calcu
A concentration of 800 ppm by volume of CO is considered lethal to humans. Calculate the minimum mass of CO in grams that would become a lethal concentration in a closed room 17.6…
A concern for the ozone layer was introduced in the 1970s when it was discovered
A concern for the ozone layer was introduced in the 1970s when it was discovered that the presence of chlorine in the atmosphere could cause the second reaction to occur without t…
A condensation reaction that gives the same type of products as the benzoin cond
A condensation reaction that gives the same type of products as the benzoin condensation, but goes via a different mechanism, results from the treatment of esters with sodium in a…
A condenser is essentially a type of heat exchanger that is used to remove heat
A condenser is essentially a type of heat exchanger that is used to remove heat from a vapor and convert it to liquid. The picture below shows a condenser that is used in a commer…
A conducting loop is made in the form of two squares of sides s 1 = 3.8cm and s
A conducting loop is made in the form of two squares of sides s1 = 3.8cm and s2 = 7.9 cm as shown. At time t = 0, the loop enters a region of length L = 20.5 cm that contains a un…
A conducting sphere of radius 2.0 cm has an excess charge of 10 nC on it. A seco
A conducting sphere of radius 2.0 cm has an excess charge of 10 nC on it. A second conducting sphere of radius 4.0 cm has an excess charge of 2.0 nC on it. a. Conceptual Question:…
A confined aquifer (porosity n = 0.33) with an initial thickness of 14.7 m and a
A confined aquifer (porosity n = 0.33) with an initial thickness of 14.7 m and an area of 30.0 km2 experienced land subsidence of 0.058 m when the pressure head was uniformly lowe…
A conical pendulum is formed by attaching a 700 g ball to a1.0-m-long string, th
A conical pendulum is formed by attaching a 700 g ball to a1.0-m-long string, then allowing the mass to move in a horizontal circle of radius 40 cm . The figure (Figure 1)shows th…
A conjugated carbon chain can be thought of in context of the particle in a box
A conjugated carbon chain can be thought of in context of the particle in a box with energy as En=n2h2/8mL2 . If a carbon-carbon bond is 138 picometers, what is the ground state e…
A conjugated carbon chain can be thought of in context of the particle in a box
A conjugated carbon chain can be thought of in context of the particle in a box with energy as En=n2h2/8mL2 . If a carbon-carbon bond is 138 picometers, what is the ground state e…
A consignment shop accepts a product for sale and sets an initial price. each mo
A consignment shop accepts a product for sale and sets an initial price. each month that the item doesnt sell, the price is reduced by 20 percent. When the item sells, the item's …
A constant electric field is in the positive X direction as shown in the diagram
A constant electric field is in the positive X direction as shown in the diagram below. Also shown are two paths through which a charge can move from point A to point C. In the fi…
A constant electric field is in the positive X direction as shown in the diagram
A constant electric field is in the positive X direction as shown in the diagram below. Also shown are two paths through which a charge can move from point A to point C. In the fi…
A constant volume (bomb) calorimeter has a total heat capacity (C_v) of 10.84 kJ
A constant volume (bomb) calorimeter has a total heat capacity (C_v) of 10.84 kJ/degree C when it contains 1.00 kg of water. (In these types of calorimeters, the vessel in which t…
A constant volume (bomb) calorimeter has a total heat capacity (C_v) of 10.84 kJ
A constant volume (bomb) calorimeter has a total heat capacity (C_v) of 10.84 kJ/degree C when it contains 1.00 kg of water. (In these types of calorimeters, the vessel in which t…
A constant-pressure calorimeter is filled with 100.0 g of water. The operator of
A constant-pressure calorimeter is filled with 100.0 g of water. The operator of the calorimeter hits the "calibrate" button and the instrument adds heat to water several times an…
A constant-pressure calorimeter is filled with Best fit to data 100.0 g of water
A constant-pressure calorimeter is filled with Best fit to data 100.0 g of water. The operator of the calorimeter hits the "calibrate" button and the instrument adds heat to water…
Subject
Chemistry concepts and calculations
Use Browse or pick another subject.