Chemistry concepts and calculations
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A 500-mL volumetric flask containing 0.434 M KCl is emptied and allowed to drain
A 500-mL volumetric flask containing 0.434 M KCl is emptied and allowed to drain briefly, leaving 1.14 mL of liquid in the flask. The flask is then rinsed by adding 87.5 mL of dis…
A 500-mg tablet containing antacids plus inert material was dissolved in 50.0 mL
A 500-mg tablet containing antacids plus inert material was dissolved in 50.0 mL of 0. 500 M HC1. The resulting solution required 26.5 mL of 0.377 M NaOH for neutralization. How m…
A 51.0 mL sample of 1.0 M NaOH is mixed with 52.0 mL of 1.0 M H_2SO_4 in a large
A 51.0 mL sample of 1.0 M NaOH is mixed with 52.0 mL of 1.0 M H_2SO_4 in a large styrofoam coffee cup: the cup is fitted with a through which passes a calibrate therometer. The te…
A 54 N push to the right is applied to a 6.0 kg block moving on a level floor wh
A 54 N push to the right is applied to a 6.0 kg block moving on a level floor where the coefficient of kinetic friction, mk = .40. The crate is accelerating along the floor. What…
A 54.0-kg woman cheats on her diet and eats a 641-Calorie (641 kcal) jelly dough
A 54.0-kg woman cheats on her diet and eats a 641-Calorie (641 kcal) jelly doughnut for breakfast. (a) How many joules of energy are the equivalent of one jelly doughnut? (b) How …
A 55.0 g of Mg (Cp = 1.04 J/g degree C) is dropped into a 100.0 g of water. The
A 55.0 g of Mg (Cp = 1.04 J/g degree C) is dropped into a 100.0 g of water. The temperature of the water (Cp=4.18J/g degree C) is observed to rise from 20.5 degree C to 26.4 degre…
A 55.0 g of Mg (Cp = 1.04 J/g degree C) is dropped into a 100.0 g of water. The
A 55.0 g of Mg (Cp = 1.04 J/g degree C) is dropped into a 100.0 g of water. The temperature of the water (Cp=4.18J/g degree C) is observed to rise from 20.5 degree C to 26.4 degre…
A 55.0 mL sample of a 0.104 M potassium sulfate solution is mixed with 37.5 mL o
A 55.0 mL sample of a 0.104 M potassium sulfate solution is mixed with 37.5 mL of a 0.106 M lead(II) acetate solution and the following precipitation reaction occurs: K_2SO_4(aq) …
A 55.0-kg/person, at rest. running horizontally with a y with a velocity or 50 m
A 55.0-kg/person, at rest. running horizontally with a y with a velocity or 50 mjn odle 9 S ld ther s bibsly 20. Ignoring the effects of friction during the collision, find the ve…
A 550. mL sample of gas at 2.00 atm of pressure is compressed to a volume of 400
A 550. mL sample of gas at 2.00 atm of pressure is compressed to a volume of 400. mL. What is the pressure on the compressed sample? a. 2.09 times 10^5 atm b. 0.362 atm c. 4.78 ti…
A 55mL sample of 1 M hydrobromic acid solution was diluted to 100 ml and poured
A 55mL sample of 1 M hydrobromic acid solution was diluted to 100 ml and poured into the caorimeter from problem #1. The inital temp. of the hydrobromic acid in the calorimeter wa…
A 560-N uniform rectangular sign 4.00 m wide and 3.00 m high is suspended from a
A 560-N uniform rectangular sign 4.00 m wide and 3.00 m high is suspended from a horizontal, 6.00-m-long, uniform, 120-N rod as indicated in the figure below. The left end of the …
A 560-N uniform rectangular sign 4.00 m wide and 3.00 m high is suspended from a
A 560-N uniform rectangular sign 4.00 m wide and 3.00 m high is suspended from a horizontal, 6.00-m-long, uniform, 140-N rod as indicated in the figure below. The left end of the …
A 58 year-old moderately obese Caucasian male comes to the clinic for his 6-mont
A 58 year-old moderately obese Caucasian male comes to the clinic for his 6-month check up. He reports lifestyle modifications of reduction in salt intake (no table salt), cessati…
A 6.00 g sugar cube (sucrose: C12H22O11) is dissolved in a 350 mL teapot contain
A 6.00 g sugar cube (sucrose: C12H22O11) is dissolved in a 350 mL teapot containing 80 C water (density of water at 80 C= 0.975 g/mL). What is the molality of the sugar solution?…
A 6.053-g sample of a solid, weak, monoprotic acid is used to make 100.0 mL of s
A 6.053-g sample of a solid, weak, monoprotic acid is used to make 100.0 mL of solution. 15.0 mL of this solution was titrated with 0.08386-M NaOH. The pH after the addition of 23…
A 6.51-L cylinder contains 2.46 mol of gas A and 3.14 mol of gas B, at a tempera
A 6.51-L cylinder contains 2.46 mol of gas A and 3.14 mol of gas B, at a temperature of 34.9 °C. Calculate the partial pressure of each gas in the cylinder. Assume ideal gas behav…
A 6.55 g sample of a mixture of magnesium carbonate and calcium carbonate is tre
A 6.55 g sample of a mixture of magnesium carbonate and calcium carbonate is treated with excess hydrochloric acid. The resulting reaction produces 1.74 L of carbon dioxide gas at…
A 6.55 g sample of aniline (C6H5NH2) was combusted in a bomb calorimeter. If the
A 6.55 g sample of aniline (C6H5NH2) was combusted in a bomb calorimeter. If the temperature rose from 22.25 ? C to 55.15 ? C, use the information below to determine the heat capa…
A 6.55 g sample of aniline (C6H5NH2) was combusted in a bomb calorimeter. If the
A 6.55 g sample of aniline (C6H5NH2) was combusted in a bomb calorimeter. If the temperature rose from 22.25 ? C to 55.15 ? C, use the information below to determine the heat capa…
A 6.55 g sample of aniline (C6H5NH2) was combusted in a bomb calorimeter. If the
A 6.55 g sample of aniline (C6H5NH2) was combusted in a bomb calorimeter. If the temperature rose from 22.25 ? C to 55.15 ? C, use the information below to determine the heat capa…
A 6.55 g sample of aniline (C6H5NH2) was combusted in a bomb calorimeter. If the
A 6.55 g sample of aniline (C6H5NH2) was combusted in a bomb calorimeter. If the temperature rose from 22.25 ? C to 55.15 ? C, use the information below to determine the heat capa…
A 6.55 g sample of aniline (C6H5NH2) was combusted in a bomb calorimeter. If the
A 6.55 g sample of aniline (C6H5NH2) was combusted in a bomb calorimeter. If the temperature rose from 22.25 ? C to 55.15 ? C, use the information below to determine the heat capa…
A 6.55 g sample of aniline (C6H5NH2) was combusted in a bomb calorimeter. If the
A 6.55 g sample of aniline (C6H5NH2) was combusted in a bomb calorimeter. If the temperature rose from 22.25 ? C to 55.15 ? C, use the information below to determine the heat capa…
A 6.60 F capacitor that is initially uncharged is connected in series with a 470
A 6.60 F capacitor that is initially uncharged is connected in series with a 4700 resistor and a 505 V emf source with negligible internal resistance. Part A Just after the circui…
A 6.67 mg sample of a compound containing carbon, hydrogen, and oxygen underwent
A 6.67 mg sample of a compound containing carbon, hydrogen, and oxygen underwent combustion producing 15.17 mg of CO2 and 6.19 mg of H2O. What is the empirical formula of the comp…
A 6.67 mg sample of a compound containing carbon, hydrogen, and oxygen underwent
A 6.67 mg sample of a compound containing carbon, hydrogen, and oxygen underwent combustion producing 15.17 mg of CO2 and 6.19 mg of H2O. What is the empirical formula of the comp…
A 6.881-g sample containing MgCl_2 and NaCl was dissolved in sufficient water to
A 6.881-g sample containing MgCl_2 and NaCl was dissolved in sufficient water to give a 500-mL volume. Analysis of the chloride content in a 50-0mL aliquot resulted in the formati…
A 6.881-g sample containing MgCl_2 and NaCl was dissolved in sufficient water to
A 6.881-g sample containing MgCl_2 and NaCl was dissolved in sufficient water to give a 500-mL volume. Analysis of the chloride content in a 50-0mL aliquot resulted in the formati…
A 60 kg hiker wishes to climb a mountain an ascent of 1500 m. a) assuming she is
A 60 kg hiker wishes to climb a mountain an ascent of 1500 m. a) assuming she is 20% efficient at converting chemical energy from food to mechanicmal work and that essentially all…
A 60% w/w solution of nicotine in water is heated from 22°C to 80°C. This proces
A 60% w/w solution of nicotine in water is heated from 22°C to 80°C. This process is termed: nicotine-water phase diagram isothermal isoplethal isocratic isobaric adiabatic isothe…
A 60,000 L tank truck of methyl amine in water (nominally 40%) is suspected of h
A 60,000 L tank truck of methyl amine in water (nominally 40%) is suspected of having Jesse Pinkman stealing some of the solution and replacing the solution with water. A sample o…
A 60.00 mL solution of 0.3600 M AgNO3. was added to a solution of AsO43. Ag3AsO4
A 60.00 mL solution of 0.3600 M AgNO3. was added to a solution of AsO43. Ag3AsO4 precipitated and was filtered off. Fe3 was added and the solution was titrated with 0.2050 M KSCN.…
A 600,000 kilowatt natural gas power station burns its fuel with an average stoi
A 600,000 kilowatt natural gas power station burns its fuel with an average stoichiometry of C3H7 and a LHV of 20,000 BTU/lbm. The plant is 42% efficient with energy recovery syst…
A 600.0 ml sample of pure water is allowed to come to equilibrium with pure oxyg
A 600.0 ml sample of pure water is allowed to come to equilibrium with pure oxygen gas at a pressure of 920 mmHg. What mass of oxygen gas dissolves in the water? (The …
A 61.0 mL sample of a 0.104 M potassium sulfate solution is mixed with 36.0 mL o
A 61.0 mL sample of a 0.104 M potassium sulfate solution is mixed with 36.0 mL of a 0.106 M lead(II) acetate solution and the following precipitation reaction occurs: K2SO4(aq)+Pb…
A 61.0 mL sample of a 0.118 M potassium sulfate solution is mixed with 35.0 mL o
A 61.0 mL sample of a 0.118 M potassium sulfate solution is mixed with 35.0 mL of a 0.114 M lead(II) acetate solution and the following precipitation reaction occurs: K2SO4 (aq) 2…
A 62.0 mL sample of 1.0 M NaOH is mixed with 43.0 mL of 1.0 M H_2SO_4 in a large
A 62.0 mL sample of 1.0 M NaOH is mixed with 43.0 mL of 1.0 M H_2SO_4 in a large Styrofoam coffee cup; the cup is fitted with a lid through which passes a calibrated thermometer T…
A 62.0 mL sample of 1.0 M NaOH is mixed with 55 0 mL of 1.0 M H_2SO_4 in a large
A 62.0 mL sample of 1.0 M NaOH is mixed with 55 0 mL of 1.0 M H_2SO_4 in a large Styrofoam coffee cup; the cup is Fitted with a lid through which passes a calibrated thermometer T…
A 62.0 mL sample of 1.0 M NaOH is mixed with 55.0 mL of 1.0 M H_2SO_4 in a large
A 62.0 mL sample of 1.0 M NaOH is mixed with 55.0 mL of 1.0 M H_2SO_4 in a large Styrofoam coffee cup the cup is fitted with a lid through which passes a calibrated thermometer, T…
A 62.0 mL sample of 1.0 M NaOH is mixed with 58.0 mL of 1.0 M H_2SO_4 in a large
A 62.0 mL sample of 1.0 M NaOH is mixed with 58.0 mL of 1.0 M H_2SO_4 in a large Styrofoam coffee cup; the cup is fitted with a lid through which passes a calibrated thermometer. …
A 62.0-kg woman cheats on her diet and eats a 666-Calorie (666 kcal) jelly dough
A 62.0-kg woman cheats on her diet and eats a 666-Calorie (666 kcal) jelly doughnut for breakfast. (a) How many joules of energy are the equivalent of one jelly doughnut? J (b) Ho…
A 63 year-old man is dehydrated after three days of alcohol abuse. His serum sod
A 63 year-old man is dehydrated after three days of alcohol abuse. His serum sodium level has increased from a normal value of 140 mEq/L to 147 mEq/L. The resting membrane potenti…
A 64.0 mL sample of 1.0 M NaOH is mixed with 44 0 mL of 1.0 M H_2SO_4 in a large
A 64.0 mL sample of 1.0 M NaOH is mixed with 44 0 mL of 1.0 M H_2SO_4 in a large Styrofoam coffee cup; the cup is fitted with a lid through which passes a calibrated thermometer. …
A 64.0 mL sample of 1.0 M NaOH is mixed with 45.0 ml of 1.0 M H_2SO_4 in a large
A 64.0 mL sample of 1.0 M NaOH is mixed with 45.0 ml of 1.0 M H_2SO_4 in a large Styrofoam coffee cup; the cup is fitted with a lid through which passes a calibrated thermometer. …
A 64.0 mL sample of 1.0 M NaOH is mixed with 47.0 mL of 1.0 M H2SO4 in a large S
A 64.0 mL sample of 1.0 M NaOH is mixed with 47.0 mL of 1.0 M H2SO4 in a large Styrofoam coffee cup; the cup is fitted with a lid through which passes a calibrated thermometer. Th…
A 65 WT% HNO3 solution at t = 75o C has PHNO3 = 4670 Pa, and PH2O = 11500 Pa. Gi
A 65 WT% HNO3 solution at t = 75o C has PHNO3 = 4670 Pa, and PH2O = 11500 Pa. Given the following data: P*HNO3 = 71990 Pa, and P*H2O = 38540 Pa: a. Calculate the partial pressure …
A 65 WT% HNO3 solution at t = 75oC has PHNO3 = 4670 Pa, and PH2O = 11500 Pa. Giv
A 65 WT% HNO3 solution at t = 75oC has PHNO3 = 4670 Pa, and PH2O = 11500 Pa. Given the following data: P*HNO3 = 71990 Pa, and P*H2O = 38540 Pa: a) Calculate the partial pressure o…
A 65.56 g quantity of dry ice (solid carbon dioxide) is allowed to sublime (evap
A 65.56 g quantity of dry ice (solid carbon dioxide) is allowed to sublime (evaporate) in a position like apparatus. Calculate the expansion work done against external pressure of…
A 65kg ice skater is gliding with his 50kg partner at a velocity of +3 m/s. He t
A 65kg ice skater is gliding with his 50kg partner at a velocity of +3 m/s. He then pushes her away from him such that she is now gliding with a velocity of +5 m/s. Assume that th…
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