Chemistry concepts and calculations

2.00x10^-1 M Fe(NO3)3 4.00x10^-4 M NaSCN 0.10 M HNO3 Total mL A1 Table V Total V

2.00x10^-1 M Fe(NO3)3 4.00x10^-4 M NaSCN 0.10 M HNO3 Total mL A1 Table V Total Vi /Vf / Vtotal Vi / Vf /Vtotal S1 2.00 0/ 0 /0 0.10 / 8.19 / 8.09 10.09 S2 2.00 1.06 / 2.00 / 0.94 …

2.0125 g of salicylic acid were used in the synthesis of aspirin as well as 5 dr

2.0125 g of salicylic acid were used in the synthesis of aspirin as well as 5 drops of 85% phosphoric acid and 5 mL of acetic anhydride. Moles of salicylic acid=? Initial molarity…

2.0184 g of a compound of the general formula Cr x (NH 3 ) y Cl z was prepared u

2.0184 g of a compound of the general formula Crx(NH3)yClz was prepared using 3.5246 g CrCl3 * 6H2O and 10.00 mL of 15 M NH3. It was then analyzed as follows: The concentration of…

2.02 g of hydrogen gas occupies 22.428 L. Although the volume of the gas contain

2.02 g of hydrogen gas occupies 22.428 L. Although the volume of the gas contains significant digits the density of the gas (2.02 g/22.428 L = 0.900659 g/L) should be reported as:…

2.035 gH ow to use stoichiometry to convert es of reactants and products in chem

2.035 gH ow to use stoichiometry to convert es of reactants and products in chemical Submit My Answers Give Up Correct escribes the quantitative relationships tants and products o…

2.0469 grams of NH4NO3 has been added to 100 ml of water. Theheat obsorbed or lo

2.0469 grams of NH4NO3 has been added to 100 ml of water. Theheat obsorbed or lost by water can be calcualted using q=mCwater XT, assuming the density of water is 1g/ml, and chang…

2.1- Consider the relational database of Figure 2.14. What are the appropriate p

2.1- Consider the relational database of Figure 2.14. What are the appropriate primary keys? 2.8- Consider the bank database of Figure 2.15. Give an expression in the relational a…

2.1. What are the differences between a compiler and an interpreter? Give exampl

2.1. What are the differences between a compiler and an interpreter? Give examples of each and specific languages/environments for each. A) Internally, does NVIDIA CUDA effectivel…

2.11. The inverse of a matrix A can be defined as the matrix X whose columns x j

2.11. The inverse of a matrix A can be defined as the matrix X whose columns x j solve the equations Ax j = e j, where ej is the jth column of the identity matrix. (a) Starting wi…

2.12 The following data were obtained in a standard calibration for the nation o

2.12 The following data were obtained in a standard calibration for the nation of copper, as Cu(NH,)", by measuring the transmittance u filter photometer. using a 96T Cu conc. (pp…

2.12 The following data were obtained in a standard calibration for the nation o

2.12 The following data were obtained in a standard calibration for the nation of copper, as Cu(NH,)", by measuring the transmittance u filter photometer. using a 96T Cu conc. (pp…

2.13 The Four Corners power plant is located in New Mexico near where four state

2.13 The Four Corners power plant is located in New Mexico near where four states meet: New Mexico, Arizona, Utah, and Colorado. It is one of the largest coal-fired plants in the …

2.14 2H2(g)+ 0(g) +2H200) If 100g of hydrogen is burnt how many grams of water a

2.14 2H2(g)+ 0(g) +2H200) If 100g of hydrogen is burnt how many grams of water are produced? b How many moles of methane must have reacted if D.2 mole of CO2 gas are produced when…

2.18 The doozy is defined as the unit of force required to accelerate a unit of

2.18   The doozy is defined as the unit of force required to accelerate a unit of mass, called the cuz, with the gravitational acceleration on the surface of the moon, which is on…

2.180 g of a solid mixture containing only potassium carbonate (FW = 138.2058 g/

2.180 g of a solid mixture containing only potassium carbonate (FW = 138.2058 g/mol) and potassium bicarbonate (FW = 100.1154 g/mol) is dissolved in distilled water. 35.00 mL of a…

2.2 (20 points) Let D be the maximum degree of concurrency in a task dependency

2.2 (20 points) Let D be the maximum degree of concurrency in a task dependency graph with T tasks and a critical path length L. Prove that (T/L) <= D <= T- L + 1 2.3 (20 po…

2.2 A 75kg person doing light work requires about 3000 kcal of food energy per d

2.2 A 75kg person doing light work requires about 3000 kcal of food energy per day, 40% of which is actually used by the body's cells. (The other 60% is lost as heat and in waste …

2.2 Construct a logical expression to represent each of the following conditions

2.2 Construct a logical expression to represent each of the following conditions: a. x is between 3 and 15 but not equal to 10. b. x is between 10 and 20 but not odd. c. y is divi…

2.2 Construct a logical expression to represent each of the following conditions

2.2 Construct a logical expression to represent each of the following conditions: a. x is between 3 and 15 but not equal to 10. b. x is between 10 and 20 but not odd. c. y is divi…

2.2.5. Compound IIc A 50-ml three-necked flask equipped with a stirrer, a reflux

2.2.5. Compound IIc A 50-ml three-necked flask equipped with a stirrer, a reflux condenser, and a dropping funnel was charged with N-(4 nitrophenyl)carbazole (III) (2.595 g, 9 mmo…

2.2.5. Compound IIc A 50-ml three-necked flask equipped with a stirrer, a reflux

2.2.5. Compound IIc A 50-ml three-necked flask equipped with a stirrer, a reflux condenser, and a dropping funnel was charged with N-(4 nitrophenyl)carbazole (III) (2.595 g, 9 mmo…

2.20 Consider the situation where a semipermeable membrane separates a bulk flui

2.20 Consider the situation where a semipermeable membrane separates a bulk fluid (region A) with an osmotic pressure of 1750 mmHg from another enclosed fluid (region B) with an o…

2.25 Find the critical insulation radius for wool-felt insulation surrounding a

2.25 Find the critical insulation radius for wool-felt insulation surrounding a tube exposed to room air at 20°C with h 8 w/m2.K. what is the heat loss per meter of length for a 1…

2.25 moles of N2 in a state defined by Ti = 300. K and Vi = 1.00 Lundergoes an i

2.25 moles of N2 in a state defined by Ti = 300. K and Vi = 1.00 Lundergoes an isothermal reversible expansion until Vf = 20.5 L.Calculate w assuming (A) that the gas is described…

2.27. The Reynolds number is a dimensionless group defined for a fluid flowing i

2.27. The Reynolds number is a dimensionless group defined for a fluid flowing in a pipe as Re = Dupju where D is pipe diameter, u is fluid velocity, is fluid density, and is flui…

2.29 A seed crystal of diameter D (mm) is placed in a solution of dissolved salt

2.29   A seed crystal of diameter D (mm) is placed in a solution of dissolved salt, and new crystals are observed to nucleate (form) at a constant rate r(crystals/min). Experiment…

2.3 After some discussion, the scientists decide that fertilization with Fe woul

2.3 After some discussion, the scientists decide that fertilization with Fe would be the most practical way to stimulate the uptake of 7.5 X 10^16 grams of C. They propose to fert…

2.3 What is the difference between the following two statements? a. if (n > 2) {

2.3 What is the difference between the following two statements? a. if (n > 2) { if (n < 6) System.out.println("Done!"); } else System.out.println("Error"); b. if (n > 2)…

2.34 2.49 (B) Applications Calculate the number of protons, neutrons, and electr

2.34 2.49 (B) Applications Calculate the number of protons, neutrons, and electrons in: 2.28 Calculate the number of protons, neutrons, and electrons in: Light, 2.29 An atom has n…

2.37 Fuel cells are a promising alternative energy technology. They are based on

2.37 Fuel cells are a promising alternative energy technology. They are based on producing energy by the following reaction: H 2(g)+1/2O2(g) -->H2O(g) One type of fuel cell, th…

2.46 There are a number of Web sites that display atomic orbitals. Use a search

2.46 There are a number of Web sites that display atomic orbitals. Use a search engine to find a complete set of the f orbitals. a. How many orbitals are there in one set (for exa…

2.46 There are a number of Web sites that display atomic orbitals. Use a search

2.46 There are a number of Web sites that display atomic orbitals. Use a search engine to find a complete set of the f orbitals. a. How many orbitals are there in one set (for exa…

2.49 A gas is contained is a vertical piston-cylinder assembly by a piston with

2.49 A gas is contained is a vertical piston-cylinder assembly by a piston with a face area of 40 in.2 and a weight of 100 Ibf. The atmosphere exerts a pressure of 14.7 Ibflin,2 o…

2.5 g of helium at an initial temperature of 350 K interacts thermally with 7.6

2.5 g of helium at an initial temperature of 350 K interacts thermally with 7.6 g of oxygen at an initial temperature of 600 K a) What is the initial thermal energy of each gas? b…

2.5 g of potassium hydroxide was added to aqueous solution of 15.0 g potassium p

2.5 g of potassium hydroxide was added to aqueous solution of 15.0 g potassium permanganate. After the potassium hydroxide was dissolved completely, 6.0 g of P Nitrotoluene was ad…

2.5 grams of a ferrous sample ore are dissolved with acid and diluted to a total

2.5 grams of a ferrous sample ore are dissolved with acid and diluted to a total volume of 100 mL. Then, 0.75 grams of K_2Cr_2O_7 are dissolved and diluted to 250 mL. 9.00 mL of t…

2.5 grams of a metallic sample containing an unknown amount of zinc is dissolved

2.5 grams of a metallic sample containing an unknown amount of zinc is dissolved in 500 ml of acidic water, releasing the zinc into the water as Zn2+ ions. A 10.00 ml aliquot of t…

2.5 moles H20 and H20g)H28 H21-0040 M. Which of the following is true? 100 g of

2.5 moles H20 and H20g)H28 H21-0040 M. Which of the following is true? 100 g of C are placed in a 50-L container. At equilibrium for the reaction as- 50-L.container. At 15) A) no …

2.500 grams of metal X (molar mass = 65.39 g/mole) was reacted with 100.0 mL of

2.500 grams of metal X (molar mass = 65.39 g/mole) was reacted with 100.0 mL of a 1.500 M HCL solution in a coffee cup calorimeter. The temperature went from 12.50 C to 40.50 C. D…

2.50g of KClO3 decomposes by the equation: 2KClO3=2KCl+3O2. What volume of O2 is

2.50g of KClO3 decomposes by the equation: 2KClO3=2KCl+3O2. What volume of O2 is produced at 25 degree C and a pressure of 750 mmHg?

2.5335g was the offical weight of Na2CO3 used. .038 L of H2SO4 was used for the

2.5335g was the offical weight of Na2CO3 used. .038 L of H2SO4 was used for the first titration. Calculate the molarity of the H2SO4. Reagents: sodium carbonate, approximately 0.0…

2.66 Let K1 be a theory whose language has only = as a predicate letter and no f

2.66 Let K1 be a theory whose language has only = as a predicate letter and no function letters or individual constants. Let its proper axioms be (for all x1)x1 = x1,(for all x1)(…

2.67 Give the chemical formula for (a) chlorite ion, (b) chloride ion, (c) chlor

2.67 Give the chemical formula for (a) chlorite ion, (b) chloride ion, (c) chlorate ion, (d) perchlorate ion, (e) hypoite ion. 2.68 Selenium, an element required nutritionally in …

2.96g of CuNO3 dissolves in water to make 0.320 M solution. What is the volume o

2.96g of CuNO3 dissolves in water to make 0.320 M solution. What is the volume of the solution (in mL)? I have tried this problem three different times and it keeps telling me tha…

2.96g of CuNO3 dissolves in water to make 0.320 M solution. What is the volume o

2.96g of CuNO3 dissolves in water to make 0.320 M solution. What is the volume of the solution (in mL)? I have tried this problem three different times and it keeps telling me tha…

2.A 1.035 L container (initially evacuated) is filled with 0.01032 moles of nitr

2.A 1.035 L container (initially evacuated) is filled with 0.01032 moles of nitric oxide and 0.00430 moles of bromine gas. The two components react to form some NOBr. At equilibri…

2.A buffer solution contains 0.295 M C6H5NH3Br and 0.339 M C6H5NH2 (aniline). De

2.A buffer solution contains 0.295 M C6H5NH3Br and 0.339 M C6H5NH2 (aniline). Determine the pH change when 0.076 mol HBris added to 1.00 L of the buffer. pH after addition pH befo…

2.According to the following reaction, how many grams of dinitrogen monoxide wil

2.According to the following reaction, how many grams of dinitrogen monoxide will be formed upon the complete reaction of 28.0 grams of ammonium nitrate? 3.According to the follow…

2.Ammonia can be determined spectrophotometrically by the reaction with phenol i

2.Ammonia can be determined spectrophotometrically by the reaction with phenol in the presence of hypochlorite to give the blue indophenol absorbing at Lambadmax = 625 nm: A 4.370…

2.Calculate the mass (in mg) of fine particles inhaled by an adult each year, as

2.Calculate the mass (in mg) of fine particles inhaled by an adult each year, assuming that he/she inhales about 335.8 L of air per hour and that the average concentration of PM2.…