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1. A solution containing 100.0 g of an unknown liquid and 900.0 g of water has a
1. A solution containing 100.0 g of an unknown liquid and 900.0 g of water has a freezing point of -3.33 oC. Given Kf = 1.86 oC/m for water, what is the molecular weight of the un…
1. A solution containing 27.00 mg of an unknown protein per 28.5 mL solution was
1. A solution containing 27.00 mg of an unknown protein per 28.5 mL solution was found to have an osmotic pressure of 3.90 torr at 42 C. What is the molar mass of the protein? Uni…
1. A solution containing the following was prepared: 0.11 M Pb2 , 1.5 *10-6 M Pb
1. A solution containing the following was prepared: 0.11 M Pb2 , 1.5 *10-6 M Pb4 , 1.5 *10-6 M Mn2 , 0.11 M MnO4-, and 0.94 M HNO3. For this solution, the following balanced redu…
1. A solution contains 0.285 M sodium acetate and 8.74×10-2 M acetic acid. The p
1. A solution contains 0.285 M sodium acetate and 8.74×10-2 M acetic acid. The pH of this solution is 2.A solution contains 0.245 M potassium hypochlorite and 0.388 M hypochlorous…
1. A solution contains 11.60g of unknown compound dissolved in 50.0 mL of water.
1. A solution contains 11.60g of unknown compound dissolved in 50.0 mL of water. (Assume a density of 1.00 g/mL for water.) The freezing point of the solution is -4.79?C. The mass…
1. A solution contains 35 parts per thousand (g kg -1 ) NaCl. Calculate the conc
1. A solution contains 35 parts per thousand (g kg-1) NaCl. Calculate the concentration of Na+ abd Cl- in mmol L-1 (assume solution density = 1.026 g mL-1) 2. If 0.1 mole of CaCl2…
1. A solution contains 50.0 g of heptane (C 7 H 16 ) and 50.0 g of octane (C 8 H
1. A solution contains 50.0 g of heptane (C7H16) and 50.0 g of octane (C8H18) at 250C. The vapor pressures of pure hexane and pure octane at 250C are 45.8 torr and 10.9 torr…
1. A solution is made by dissolving 1.00 g of the ligan bipyridine ( C10 H8 N2)
1. A solution is made by dissolving 1.00 g of the ligan bipyridine ( C10 H8 N2) in enough water to make 1.00 L of solution. Determine the concentration of bipyridine in the follow…
1. A solution is made by dissolving 1.13g of aluminum chloride in enough water t
1. A solution is made by dissolving 1.13g of aluminum chloride in enough water to make 500 mL of solution . What is the molarity of this solution? 2. Consider the following equati…
1. A solution is made by dissolving 3.35 grams of an unknown salt in 150 mL of w
1. A solution is made by dissolving 3.35 grams of an unknown salt in 150 mL of water (at 22.5 deg. C) , and the temperature of the water rose to 23.81 deg. C. Ad…
1. A solution is saturated in both nitrogen gas and potassium bromide at 75 0 C.
1. A solution is saturated in both nitrogen gas and potassium bromide at 750C. When the solution is cooled to room temperature, what is most likely to happen? Why? (5 pts) a…
1. A solution of .050 M BaCl 2 and .025 M CaCl 2. K sp of BaSO 4 is 1.1 x 10 -10
1. A solution of .050 M BaCl2 and .025 M CaCl2. Ksp of BaSO4 is 1.1 x 10-10, and Ksp of CaSO4 is 2.4 x 10-5. a. What is the greatest concentration of SO42- that will precipitate o…
1. A solution of a weak acid was tested with the indicators used in this experim
1. A solution of a weak acid was tested with the indicators used in this experiment. The colors observed were as follows: Methyl Violet Violet Thymol B…
1. A solution of ammonia is 2.0% ionized at 25.0 degrees celsius.What was the or
1. A solution of ammonia is 2.0% ionized at 25.0 degrees celsius.What was the original concentration ( in M) of the ammoniasolution? The Kb at 25.0 degrees celsius for ammonia is4…
1. A solution of magnesium hydroxide is prepared by dissolving 361.824 mg of Mg(
1. A solution of magnesium hydroxide is prepared by dissolving 361.824 mg of Mg(OH)2 in 273.5 mL of water. What is the equilibrium concentration of OH- in this solution? For magne…
1. A solution of nitrous acid, HNO2, was prepared by dissolving 1.93 g of HNO2 i
1. A solution of nitrous acid, HNO2, was prepared by dissolving 1.93 g of HNO2 in 500.0 mL of solution. If the equilibrium concentration of H+ in this solution is 7.85 x 10-3 M, w…
1. A solution of sodium hydroxide (NaOH) was standardized against potassium hydr
1. A solution of sodium hydroxide (NaOH) was standardized against potassium hydrogen phthalate (KHP) A known mass of KHP was titrated with the NaOH solution until a light pink col…
1. A solution of the sample to be analyzed has been made in a suitable solvent a
1. A solution of the sample to be analyzed has been made in a suitable solvent and wil l be provided for you. With this solution, a small spot is applied at a distance hear the bo…
1. A solution that contains 50 mg of a colored compound dissolved in 100 mL of a
1. A solution that contains 50 mg of a colored compound dissolved in 100 mL of a solvent absorbs half of the incident light at 500 nm when an aliquot is placed in a cuvette that h…
1. A solution that contains 50 mg of a colored compound dissolved in 100 mL of a
1. A solution that contains 50 mg of a colored compound dissolved in 100 mL of a solvent absorbs half of the incident light at 500 nm when an aliquot is placed in a cuvette that h…
1. A solution was prepared by adding 12.00 mL of 0.130 M KI, 3.00 mL of 0.130 M
1. A solution was prepared by adding 12.00 mL of 0.130 M KI, 3.00 mL of 0.130 M KNO3, 5 mL of 0.0100 M Na2S2O3, 1.00 mL of starch solution, and 15.00 mL of 0.130 M (NHa)2S20s. a. …
1. A somatic cell divides to form two genetically identical daughter cells durin
1. A somatic cell divides to form two genetically identical daughter cells during mitosis. Prior to mitosis occurring, which of the following must occur? a. The cell must replicat…
1. A sound engineer is setting up for an LMFAO concert. He uses 518 N of force t
1. A sound engineer is setting up for an LMFAO concert. He uses 518 N of force to pull a large speaker 27 m. How much work has he done on the speaker? 2. The speaker has a mass of…
1. A sound wave with a sound level (Beta) of 80.0 dB is incident on an eardrum o
1. A sound wave with a sound level (Beta) of 80.0 dB is incident on an eardrum of area 0.600 x10 ^-4 m^2. how much ebergy is absorbed by the eardrum in 3 minutes? 2. At point A, 3…
1. A space capsule of mass 5070 kg orbits Mars with a period of 328 minutes. An
1. A space capsule of mass 5070 kg orbits Mars with a period of 328 minutes. An astronaut is riding in the space capsule. The astronaut weighs 750 N on earth. Note: The computer s…
1. A space curve has the parametrization r ( t ) = %u27E8 sin t cos t, sin 2 t,
1. A space curve has the parametrization r(t) = %u27E8sin t cos t, sin2 t, cos t%u27E9 where 0 %u2264 t %u2264 2%u03C0. (a) Calculate |r(t)|. Simplify your answer as much as possi…
1. A space monkey is happily orbiting a Schwarzschild black hole in a circular g
1. A space monkey is happily orbiting a Schwarzschild black hole in a circular geodesic orbit. An evil baboon, far from the black hole. tries to send the monkey to its death insid…
1. A space probe is leaving the solar system at 0.20 c , moving directly away fr
1. A space probe is leaving the solar system at 0.20 c , moving directly away from Earth. It emits radio pulses at the rate of 70 per minute. Part A At what rate are the pulses re…
1. A spaceship is orbiting the Earth around the circular orbit of radius R=2.5R
1. A spaceship is orbiting the Earth around the circular orbit of radius R=2.5R0, where R0 is the Earth%u2019s radius. What should be the additional velocity V to be supplied…
1. A spaceship moving at 90% of the speed of light (or 0 . 9 c ) passes by a spa
1. A spaceship moving at 90% of the speed of light (or 0.9c) passes by a space station. The ship is 450 m long in its rest frame. (10 points each part) (a) How long does the space…
1. A spaceship moving at 90% of the speed of light (or 0 . 9 c ) passes by a spa
1. A spaceship moving at 90% of the speed of light (or 0.9c) passes by a space station. The ship is 450 m long in its rest frame. (a) How long does the spaceship appear to be as v…
1. A spaceship travels at a constant speed from earth to a planet orbiting anoth
1. A spaceship travels at a constant speed from earth to a planet orbiting another star. When the spacecraft arrives, 15 years have elapsed on earth, and 9.9 years have elapsed on…
1. A spaceship travels at a constant speed from earth to a planet orbiting anoth
1. A spaceship travels at a constant speed from earth to a planet orbiting another star. When the spacecraft arrives, 15 years have elapsed on earth, and 9.9 years have elapsed on…
1. A spaceship travels with a speed of 0.9 c as it passes by the Earth on its wa
1. A spaceship travels with a speed of 0.9 c as it passes by the Earth on its way to a distant star, as shown in the diagram below. The pilot of the spaceship measures the length …
1. A spaceship with mass of 450 kg, orbits the Earth in 100 minutes in a circula
1. A spaceship with mass of 450 kg, orbits the Earth in 100 minutes in a circular orbit. At one point in its orbit it fires an instantaneous burst in the forward direction, reduci…
1. A speaker is mounted on a verticalpole at the same height as your ear. A seco
1. A speaker is mounted on a verticalpole at the same height as your ear. A second speaker ismounted on the same pole, 3.0 m above the first speaker. These speakers transmit …
1. A speaker produces sound at a rate of power equal to 1256Watts. What is the d
1. A speaker produces sound at a rate of power equal to 1256Watts. What is the decibel level of the sound at 100maway? A) 140 dB B) 100dB C) 12.56 dB D) 11dB 2. A car pas…
1. A specialized part is used in one of our company\'s most popular products. We
1. A specialized part is used in one of our company's most popular products. We know the following costs of producing the 17,500 units of the part that are needed every year. Pe…
1. A species has four sets of chromosomes. How many molecules ofDNA do the nucle
1. A species has four sets of chromosomes. How many molecules ofDNA do the nuclei have during the G2 phase? a.) 4 b.) 8 c.) 16 d.) 32 2. Which of a man's relatives could not be th…
1. A species has four sets of chromosomes. How many moleculesof DNA do the nucle
1. A species has four sets of chromosomes. How many moleculesof DNA do the nuclei have during the G2 phase? a.) 4 b.) 8 c.) 16 d.) 32 2. Which of a man's relatives could not be th…
1. A species of flowering plant includes plants with blooms that range from brig
1. A species of flowering plant includes plants with blooms that range from bright golden yellow to very pale yellow; no flowers carrying the yellow pigment allele appear white. T…
1. A species of flowering plant includes plants with blooms that range from brig
1. A species of flowering plant includes plants with blooms that range from bright golden yellow to very pale yellow; no flowers carrying the yellow pigment allele appear white. T…
1. A specific call to action is not necessary in a proposal, because it is impli
1. A specific call to action is not necessary in a proposal, because it is implied. True, False 2. Paying attention to face saving is key to working across cultures. True, False 3…
1. A speed boat requires 65 kW to move at a constant speed of 9 m/s. What is the
1. A speed boat requires 65 kW to move at a constant speed of 9 m/s. What is the resistive force of the water at this speed? A) 7222N B) 1755 N C) 585 N D) 9750N E) 6500 N 2. A tr…
1. A speedboat moving at 30.0 m/s approaches a no-wake buoy marker 100 m ahead.
1. A speedboat moving at 30.0 m/s approaches a no-wake buoy marker 100 m ahead. The pilot slows the boat with a constant acceleration of -3.3 m/s2 by reducing the throttle. (a) Ho…
1. A speeding a stationary Highway patrol officer. The officer notes that the ca
1. A speeding a stationary Highway patrol officer. The officer notes that the car is moving with a constant velocity of Uc-38.02. The instant the car passes the officer, she begin…
1. A sphere is charged with electrons to 5.3x10^-6 C. The charge of an electron
1. A sphere is charged with electrons to 5.3x10^-6 C. The charge of an electron is 1.6x10^-19 C. How many electrons are there on the sphere? 2. Two identical positive charges exer…
1. A sphere of radius R contains water. If you make a small hole of radius r at
1. A sphere of radius R contains water. If you make a small hole of radius r at the bottom derive the time that it would take to empty the sphere. If R = 1 m and r = 0.01 m, calcu…
1. A sphere of radius R contains water. If you make a small hole of radius r at
1. A sphere of radius R contains water. If you make a small hole of radius r at the bottom derive the time that it would taketo empty the sphere if R = 1 m and r =01 m, calculate …
1. A sphere of radius R contains water. If you make a small hole of radius r at
1. A sphere of radius R contains water. If you make a small hole of radius r at the bottom derive the time that it would take to empty the sphere. If R = 1 m and r = 0.01 m, calcu…