Chemistry concepts and calculations
117302 questions • Page 402 / 2347
A cylindrical vessel with rigid adiabatic walls is separated intotwo parts by a
A cylindrical vessel with rigid adiabatic walls is separated intotwo parts by a frictionless adiabatic piston. Each part contains50.0 L of an ideal monatomic gas with CV, m =3R/2 …
A cysteine protease from a malaria parasite was recently isolated. A compound na
A cysteine protease from a malaria parasite was recently isolated. A compound names P56 was found to inhibit the enzyme. Xomounds of this type have the potential to be used as dru…
A d^1 octahedral complex is found to absorb visible light, with the absorption m
A d^1 octahedral complex is found to absorb visible light, with the absorption maximum occcurring at 497 nm. a) Calculate the crystal-field splitting energy, Delta, in kJ/mol. If …
A d^1 octahedral complex is found to absorb visible light, with the absorption m
A d^1 octahedral complex is found to absorb visible light, with the absorption maximum occurring at 503 nm. Calculate the crystal -field splitting energy, delta, in kJ/mol.. Incor…
A daily production of 50,000 kg (50 tons metric) of ethyl acetate is to be produ
A daily production of 50,000 kg (50 tons metric) of ethyl acetate is to be produced in a batch reactor from ethanol and acetic acid: C2H5OH + CH3COOH = CH3COOC2H5 + H2O (A) (B) (R…
A damaged bottle label has made life difficult for a friendly chemist. The bottl
A damaged bottle label has made life difficult for a friendly chemist. The bottle contains 325 mL of an NaOH solution but the concentration is no longer readable. The chemist remo…
A dark glass bottle of chemicals is found in cleaning out an old basement. Part
A dark glass bottle of chemicals is found in cleaning out an old basement. Part of the label has been eaten away with age. Only the last part of the label is readable. From the le…
A dark glass bottle of chemicals is found in cleaning out an old basement. Part
A dark glass bottle of chemicals is found in cleaning out an old basement. Part of the label has been eaten away with age. Only the last part of the label is readable. From the le…
A decantate contains the cations Zn2+, Mg2+ and Ni2+. The solution is treated wi
A decantate contains the cations Zn2+, Mg2+ and Ni2+. The solution is treated with sodium hydroxide, which causes the precipitation of magnesium hydroxide and nicket hydroxide. Af…
A decomposition reaction has a half-life that does not depend on the initial con
A decomposition reaction has a half-life that does not depend on the initial concentration of the reactant. What is the order of the reaction? a) zero order b) first order c) seco…
A decomposition reaction has a half-life that does not depend on the initial con
A decomposition reaction has a half-life that does not depend on the initial concentration of the reactant. What is the order of the reaction? a) zero order b) first order c) seco…
A decomposition reaction of ethylene creates two H_2 molecules for every C_2H_4
A decomposition reaction of ethylene creates two H_2 molecules for every C_2H_4 molecule, along with elemental carbon - black dust. What can complete decomposition of ethylene in …
A decomposition reaction, with a rate that is observed to slow down as the react
A decomposition reaction, with a rate that is observed to slow down as the reaction proceeds is found to have a half-life that does not depend on the initial concentration of the …
A decrease in volume will have what effect on the reaction below? C(s) + H_2O(g)
A decrease in volume will have what effect on the reaction below? C(s) + H_2O(g) CO(g) + H_2(g) K decreases more CO(g) and H_2(g) are produced no effect K increases more H_2O(g) p…
A deep breath of air has a volume of 1.05 L at a pressure of 740 torr and body t
A deep breath of air has a volume of 1.05 L at a pressure of 740 torr and body temperature which is 37°C. Calculate the number of molecules in the breath. I. 2. At 36 °C and 1.00 …
A deep-sea diver uses a gas cylinder with a volume of 10.0 L and a content of 51
A deep-sea diver uses a gas cylinder with a volume of 10.0 L and a content of 51.8 g of O2and 32.6 g of He. Part A Calculate the partial pressure of each gas and the total pressur…
A deep-sea diver uses a gas cylinder with a volume of 10.0 L and a content of 51
A deep-sea diver uses a gas cylinder with a volume of 10.0 L and a content of 51.7g of O2 and 32.4g of He. Calculate the partial pressure of each gas and the total pressure if the…
A definition of the third law of thermodynamics is that the total mass of the un
A definition of the third law of thermodynamics is that the total mass of the universe is constant. the combined mass and energy of the universe is decreasing. a perfect crystal o…
A dendritic cell engulfs a hapten and later presents peptide fragments from the
A dendritic cell engulfs a hapten and later presents peptide fragments from the hapten it c its cell surface, bound by MHC proteins. This method of antigen presentation is known a…
A derivative of the polysaccharide chitosan is being utilized in a spray to trea
A derivative of the polysaccharide chitosan is being utilized in a spray to treat severe wounds. The chitosan aids in quickly stopping the flow of blood by forming a gel at the wo…
A derivative of the polysaccharide chitosan is being utilized in a spray to trea
A derivative of the polysaccharide chitosan is being utilized in a spray to treat severe wounds. The chitosan aids in quickly stopping the flow of blood by forming a gel at the wo…
A desalination plant arranged in 1 stage and using RO(reverse osmosis) module.Th
A desalination plant arranged in 1 stage and using RO(reverse osmosis) module.The required data are in bellow table. This course is about membrane desalination process i would lik…
A detailed answer of all steps would be very appreciated! Map Sapling Learning m
A detailed answer of all steps would be very appreciated! Map Sapling Learning macmillan learning If you were going to graphically determine the activation energy of this reaction…
A detailed answer of all steps would be very appreciated! Map Sapling Learning m
A detailed answer of all steps would be very appreciated! Map Sapling Learning macmillan learning If you were going to graphically determine the activation energy of this reaction…
A detailed explanation, step by step, would be greatly appreciated! I\'m not sur
A detailed explanation, step by step, would be greatly appreciated! I'm not sure where to start =( Thank You~ Problem 18.04 Part A A point charge q1 = +2.40 C is held stationary a…
A determination of the molar solubility and the K_sp calcium hydroxide was compl
A determination of the molar solubility and the K_sp calcium hydroxide was completed according to the experimental procedure. The following data were collected for Trial I. (See R…
A deterministic queue automaton (DQA) is like a PDA except the stack is replaced
A deterministic queue automaton (DQA) is like a PDA except the stack is replaced by a queue. A queue is a tape allowing symbols to be written (push) on the left-end and read (pull…
A deuterium are lamp is commonly used as a source for which region of the electr
A deuterium are lamp is commonly used as a source for which region of the electromagnetic spectrum? Infrared Visible Ultraviolet Diffraction refers to bending of light by a prism.…
A diabetic 15yr. old gir in a coma was brought to the emergency department by he
A diabetic 15yr. old gir in a coma was brought to the emergency department by her parents. She has been on insulin for the past 8 years but, according to her parents, had not been…
A diagram of a U tube for measuring osmotic pressure is shown below. The height
A diagram of a U tube for measuring osmotic pressure is shown below. The height different between the two columns of liquid is 10.00 Cm. The dashed line represent a semi-permeable…
A diagram of a U tube for measuring osmotic pressure is shown below. The height
A diagram of a U tube for measuring osmotic pressure is shown below. The height different between the two columns of liquid is 10.00 Cm. The dashed line represent a semi-permeable…
A dielectric slab completely fills the space between the plates of a parallel-pl
A dielectric slab completely fills the space between the plates of a parallel-plate capacitor. The magnitude of the bound charge on each side of the slab is 65 % of the magnitude …
A dielectric-filled parallel-plate capacitor has plate area A = 25.0 cm2 , plate
A dielectric-filled parallel-plate capacitor has plate area A = 25.0 cm2 , plate separation d = 8.00 mm and dielectric constant k = 3.00. The capacitor is connected to a battery t…
A different product is formed in each of the following reactions. Identify the p
A different product is formed in each of the following reactions. Identify the product in each case from their 1H NMR spectra below, and suggest an explanation for the observed re…
A different solution contains dissolved NaIO3. What is the concentration of NaIO
A different solution contains dissolved NaIO3. What is the concentration of NaIO3 if adding excess Pb(IO3)2(s) produces [Pb2 ] = 4.60 × 10-6 M? Calculate the concentration of IO3 …
A different type of iodine clock reaction was conducted. Its trails were perform
A different type of iodine clock reaction was conducted. Its trails were performed at 23 degree c and the following data was collected. a. Why do you think the reaction s called a…
A digital computer has a memory unit with 24 bits per word. The instruction set
A digital computer has a memory unit with 24 bits per word. The instruction set consists of 150 different operations. All instructions have an operation code part (opcode) and an …
A digital computer has a memory unit with 30 bits per word. The instruction set
A digital computer has a memory unit with 30 bits per word. The instruction set consists of 58 different operations. All instructions have an operation code part (opcode) and two …
A digital computer has a memory unit with a 32-bit instruction and a register fi
A digital computer has a memory unit with a 32-bit instruction and a register file with 64 registers. The instruction set consists of 130 different operations. There is only one t…
A digital computer has u memory unit with 32 bits per word. The instruction set
A digital computer has u memory unit with 32 bits per word. The instruction set consists of 110 different operations. All instructions have an operation code part (opcode) and two…
A digital watch battery draws 0.15 milliamperes of current, which is provided by
A digital watch battery draws 0.15 milliamperes of current, which is provided by a mercury battery whose net reaction is: HgO(s) + Zn(s) ? ZnO(s) + Hg(l) If a partially used batte…
A digital watch battery draws 0.20 milliamperes of current, which is provided by
A digital watch battery draws 0.20 milliamperes of current, which is provided by a mercury battery whose net reaction is: HgO(s) + Zn(s) ZnO(s) + Hg(l) If a partially used battery…
A digitized TV picture is to be transmitted from a source that uses a matrix of
A digitized TV picture is to be transmitted from a source that uses a matrix of 480 x 500 pixels, where each pixel can have one of 32 intensity values. Assume that 30 pictures are…
A digitized TV picture is to be transmitted from a source that uses a matrix of
A digitized TV picture is to be transmitted from a source that uses a matrix of 480 x 500 pixels, where each pixel can have one of 32 intensity values. Assume that 30 pictures are…
A dilute aqueous solution of an organic compound soluble inwater is formed by di
A dilute aqueous solution of an organic compound soluble inwater is formed by dissolving 2.35 g of the compound in water toform 0.250 L solution. the resulting solution has an osm…
A dilute aqueous solution of calcium hydroxide at 25 Degree C reacts with gaseou
A dilute aqueous solution of calcium hydroxide at 25 Degree C reacts with gaseous hydrogen chloride via the following reaction. If the hydrogen chloride enters the reactor at 88.0…
A dilute aqueous solution of calcium hydroxide at 25 degree C reacts with gaseou
A dilute aqueous solution of calcium hydroxide at 25 degree C reacts with gaseous hydrogen chloride via the following reaction. If the hydrogen chloride enters the reactor at 88.0…
A dilute solution behaves like an ideal gas of the solute molecules. The diffusi
A dilute solution behaves like an ideal gas of the solute molecules. The diffusion coefficient of glucose in a dilute aqueous solution at 20°C is 6.7 x 10-10 m2/s. a. What will th…
A dilute solution of boric acid, H3BO3, is often used as an eyewash. Calculate h
A dilute solution of boric acid, H3BO3, is often used as an eyewash. Calculate how much H3BO3 is required to prepare 500.0 mL of a 0.50% (w/v) boric acid solution, and describe ho…
A dilute solution of bromine in carbon tetrachloride behaves as an ideal-dilute
A dilute solution of bromine in carbon tetrachloride behaves as an ideal-dilute solution. The vapour pressure of pure CCl4 is 33.85 Torr at 298 K. The Henry's law constant when th…
Subject
Chemistry concepts and calculations
Use Browse or pick another subject.