Chemistry concepts and calculations

You have two 401.0 mL aqueous solutions. Solution A is a solution of silver nitr

You have two 401.0 mL aqueous solutions. Solution A is a solution of silver nitrate, and solution B is a solution of potassium chromate. The masses of the solutes in each of the s…

You have two 401.0 mL aqueous solutions. Solution A is a solution of silver nitr

You have two 401.0 mL aqueous solutions. Solution A is a solution of silver nitrate, and solution B is a solution of potassium chromate. The masses of the solutes in each of the s…

You have two aqueous solutions: solution A is 20 mL of 1 M MgSo 4 . Solution B a

You have two aqueous solutions: solution A is 20 mL of 1 M MgSo4. Solution B a 25 mL of 1.5 M Na2SO4. You take 5 mL of solution A and mix it with 10 mL of solution B. a. What are …

You have two atoms. One atom has 12 protons, 12 neutrons and 12 electrons. The s

You have two atoms. One atom has 12 protons, 12 neutrons and 12 electrons. The second atom has 13 protons and 13 neutrons and 13 electrons. Which of the following statement(s) is(…

You have two balloons in the same room, one filled with N2 , the other filled wi

You have two balloons in the same room, one filled with N2 , the other filled with Ne. They both have the same mass of gas. 1. Which balloon exhibits the greater density? a) N2 b)…

You have two containers with capacities a = 5, b - 3 liters. The objective is to

You have two containers with capacities a = 5, b - 3 liters. The objective is to obtain exactly c liters into one of the containers. You can only perform the following operations:…

You have two containers with capacities a = 5, b = 3 liters. The objective is to

You have two containers with capacities a = 5, b = 3 liters. The objective is to obtain exactly c liters into one of the containers. You can only perform the following operations:…

You have two different buffered solutions. BUFFER ONE consists of 5.0 M HOAc and

You have two different buffered solutions. BUFFER ONE consists of 5.0 M HOAc and 5.0 M NaOAc; BUFFER TWO is made of 0.050 M HOAc and 0.050 M NaOAc. (OAc is acetate, though you can…

You have two friends, call them A and B. They each are given two wine bottles: o

You have two friends, call them A and B. They each are given two wine bottles: one bottle holds k_1 litres and the other k_2 litres. Both A and B can perform these operations: - c…

You have two friends, call them A and B. They each are given two wine bottles: o

You have two friends, call them A and B. They each are given two wine bottles: one bottle holds k_1 litres and the other k_2 litres. Both A and B can perform these operations: - c…

You have two samples of water. Sample A has a mass of 500grams and sample B has

You have two samples of water. Sample A has a mass of 500grams and sample B has a mass off 300 grams. They are heated over identical flames and then mixed. Consider the following:…

You have two samples: one is known to be acetophenone, while the other one is 1-

You have two samples: one is known to be acetophenone, while the other one is 1-phenylethanol. How would you know which one is which using IR? The presence of a strong stretch at …

You have two sealed flasks, 1 and 2, of equal volume and temperature. Flask 1 co

You have two sealed flasks, 1 and 2, of equal volume and temperature. Flask 1 contains 5.00 mol of gaseous He and flask 2 contains 5.00 mol of gaseous HF. Circle the correct answe…

You have two separate containers each filled with a gas. The containers have the

You have two separate containers each filled with a gas. The containers have the same volume and are at the same temperature. The gases also exert the same pressure. Which of the …

You hear about an opportunity for a process engineer with a company that is star

You hear about an opportunity for a process engineer with a company that is starting a new commercial plant to produce ethanol from hybrid poplar trees. You apply and soon get cal…

You hear that studies have found a evidence for a volcanic eruption of nearly pu

You hear that studies have found a evidence for a volcanic eruption of nearly pure nickel-iron, reportedly from the Earth's outer core. This story is most likely to be accurate if…

You heat 1 L of water in a kettle on a stove burner and notice that the water te

You heat 1 L of water in a kettle on a stove burner and notice that the water temperature increases with time according to the following relationship: T = -0.2044t3+2.2075t2+5.464…

You heat 3.857 g of a mixture of Fe_3 O_4 and FeO to form 4.152 g Fe_2O_3. The m

You heat 3.857 g of a mixture of Fe_3 O_4 and FeO to form 4.152 g Fe_2O_3. The mass percent of FeO Originally in the mixture was: 92.9% 38.7% 43.9% 56.1% none of these The followi…

You heat your house with liquid propane (C3H8) and you want to determine how muc

You heat your house with liquid propane (C3H8) and you want to determine how much propane it will take to change the temperature from 15 EC to 23 EC. Assume you have an average ho…

You hold a 1.80-N softball in your hand as shown in the figure. Consider your fo

You hold a 1.80-N softball in your hand as shown in the figure. Consider your forearm and hand to be a uniform rod with a mass of 1.85 kg and the distance between the elbow joint …

You just do your calculation on the basis of moles: Lets say you have a concentr

You just do your calculation on the basis of moles: Lets say you have a concentrated solution and its molarity is M now If you want to prepare a m concentration solution 10 mL(0.0…

You just started working in a new building. One of your new co-workers tells you

You just started working in a new building. One of your new co-workers tells you that many people have trouble getting locked out of their work areas because many of the doors onl…

You know about vertical relationships in the Periodic Table, for instance that C

You know about vertical relationships in the Periodic Table, for instance that C and Si are similar because they are both in group 14. There are also similarities between elements…

You know about vertical relationships in the Periodic Table, for instance that C

You know about vertical relationships in the Periodic Table, for instance that C and Si are similar because they are both in group 14. There are also similarities between elements…

You know from historical data that the ethylene oxide exposure associated with a

You know from historical data that the ethylene oxide exposure associated with a particular 2 hr task has been, on average, 0.3 PPM. Using the NIOSH method 1614 for ethylene oxide…

You know from historical data that the ethylene oxide exposure associated with a

You know from historical data that the ethylene oxide exposure associated with a particular 2 hr task has been, on average, 0.3 PPM. Using the NIOSH method 1614 for ethylene oxide…

You know that it is crucial to ensure that all reagents, including solvents, as

You know that it is crucial to ensure that all reagents, including solvents, as well as all glassware, etc., are scrupulously dried before undertaking a Grignard synthesis? Howeve…

You know what a titration is-we slowly add one solution to another. One solution

You know what a titration is-we slowly add one solution to another. One solution has one of the reactants of chemical reaction; the other solution has the When these is an acid an…

You lean out of your window in residence (which is 12 m above the ground) and hu

You lean out of your window in residence (which is 12 m above the ground) and hurl a 0.12-kg ball up to your friend, whose window is 11 m above you. What is the minimum speed with…

You learn that the pesticide malathion (an organophosphate) has replaced DDT thi

You learn that the pesticide malathion (an organophosphate) has replaced DDT this spraying season because: 1) the mosquito has become resistant to DDT, 2) malathion is an effectiv…

You learned about macroscopic and microscopic p K a s when the mechanism of enol

You learned about macroscopic and microscopic pKas when the mechanism of enolase was discussed during our chapter on carbohydrate metabolism. A dicarboxylic acid that can cause pr…

You learned early in the course that valence electrons were key to the physica p

You learned early in the course that valence electrons were key to the physica properties of atoms. This is true for chemical species as well. Lewis/VSEPR diagrams inform chemists…

You learned early in the course that valence electrons were key to the physical

You learned early in the course that valence electrons were key to the physical properties of atoms. This is true for chemical species as well. Lewis/VSEPR diagrams inform chemist…

You learned in lecture that treatment of an alkene with hydrogen bromide in the

You learned in lecture that treatment of an alkene with hydrogen bromide in the presence of dibenzoyl peroxide results in the formation of anti-Markovnikov alkyl bromides, as show…

You learned in lecture that treatment of an alkene with hydrogen bromide in the

You learned in lecture that treatment of an alkene with hydrogen bromide in the presence of dibenzoyl peroxide results in the formation of anti-Markovnikov alkyl bromides, as show…

You live in a world where you have Benzene and Trichloroethylene exposures. Give

You live in a world where you have Benzene and Trichloroethylene exposures. Given requirements to limit the risks, what concentrations of these materials are acceptable in the wat…

You live in the building on the left in the drawing, and a friend lives in the o

You live in the building on the left in the drawing, and a friend lives in the other building. The two of you are having a discussion about the heights of the buildings, and your …

You live in the building on the left in the drawing, and a friend lives in the o

You live in the building on the left in the drawing, and a friend lives in the other building. The two of you are having a discussion about the heights of the buildings, and your …

You load the protein mix onto a cation exchange column at pH 5. Next, you apply

You load the protein mix onto a cation exchange column at pH 5. Next, you apply a "washing" step by passing through buffer at pH 5. Finally, for your elution step, you apply a pH …

You make 1.00 L of a 5.00 ppm solution of Pb2+ from its anhydrous nitrate salt.

You make 1.00 L of a 5.00 ppm solution of Pb2+ from its anhydrous nitrate salt. You typically have to add a little acid to metal ion stock solutions to prevent the metal from prec…

You make a 1.000 L solution of tetracycline (TTC). It is controlled (buffered) a

You make a 1.000 L solution of tetracycline (TTC). It is controlled (buffered) at pH 7.4, and that solution contains a formal concentration of 0.000100 M TTC_Total and you added 0…

You make a capacitor by cutting the 12.5-cm-diameter bottoms out of two aluminum

You make a capacitor by cutting the 12.5-cm-diameter bottoms out of two aluminum pie plates, separating them by 3.60 mm , and connecting them across a 6.00 V battery. 1) What’s th…

You make a capacitor by cutting the 15.5-cm-diameter bottoms out of two aluminum

You make a capacitor by cutting the 15.5-cm-diameter bottoms out of two aluminum pie plates, separating them by 3.40 mm , and connecting them across a 6.00 V battery. Part A What’…

You make a solution by dissolving 0.0010 mol of HCl in enough water to make 1.0

You make a solution by dissolving 0.0010 mol of HCl in enough water to make 1.0 L of solution. Explain how two different volumes of your original HCl solution can have the same pH…

You make a trip in three phases. You first drive for 2.00 hours with an average

You make a trip in three phases. You first drive for 2.00 hours with an average speed of 60.0 mph. You then drive for another 2.00 hours with an average speed of 75.0 mph. For the…

You make some iced tea by dropping 154 g of ice into 500.0 mL of warm tea in an

You make some iced tea by dropping 154 g of ice into 500.0 mL of warm tea in an insulated pitcher If the tea is initially at 18.4 degree C and the ice cubes are initially at 0.00 …

You make some iced tea by dropping 161 g of ice into 500.0 mL of warm tea in an

You make some iced tea by dropping 161 g of ice into 500.0 mL of warm tea in an insulated pitcher. If the tea is initially at 19.8°C and the ice cubes are initially at 0.00°C, how…

You make some need tea by dropping 166 g of ice into 500.0 mL of warm tea in an

You make some need tea by dropping 166 g of ice into 500.0 mL of warm tea in an insulated pitcher. If the tea is initially at 18.3 degree C and the ice cubes are initially at 0.00…

You manage an independent septic treatment facility at a university – waste wate

You manage an independent septic treatment facility at a university – waste water from all university toilets is directed to your facility (a separate grey water facility handles …

You may discuss this problem in pairs or in groups but each individual must gain

You may discuss this problem in pairs or in groups but each individual must gain the ability to succeed on the exam. VLE data for the binary system n-pentane (1) and toluene (2) a…