Chemistry concepts and calculations
117302 questions • Page 148 / 2347
1. Titration of 331 mL of 0.501 M carbonic acid (H 2 CO 3 ) (K a1 = 4.3 x 10 -7
1. Titration of 331 mL of 0.501 M carbonic acid (H2CO3) (Ka1= 4.3 x 10-7, Ka2= 5.6 x 10-11) with 1.5 M KOH. b) What will the pH of the solution be when 0.1913 L of 1.5 M KOH are a…
1. Titration of an oxalate sample gave the following percentages: 70.59%, 70.51%
1. Titration of an oxalate sample gave the following percentages: 70.59%, 70.51%, and 71.56%. calculate the average and the standard deviation 2. Calculate the % C2O42- in each of…
1. To complete the assignment you will need to process and answer the following
1.To complete the assignment you will need to process and answer the following scenario: Tip Top Staffing supplies employees to hundreds of IT firms that require specialized skill…
1. To determine the concentration of a solution of nitrous acid , a 125.0 -mL sa
1. To determine the concentration of a solution of nitrous acid, a 125.0-mL sample is placed in a flask and titrated with a 0.1335 M solution of sodium hydroxide. A volume of 30.5…
1. To find the mass of the vapor: Sample 1 Sample 2 25.25g -0.01 25.69g -0.01 25
1. To find the mass of the vapor: Sample 1 Sample 2 25.25g -0.01 25.69g -0.01 25.55g+-0.01 25.71gt-0.01 Mass of tube/cover Mass of tube/cover/vapor Mass of vapor 25.55-25.25 0.30 …
1. To identify a diatomic gas (X2 ), a researcher carried out the following expe
1. To identify a diatomic gas (X2 ), a researcher carried out the following experiment: She weighed an empty 4.8-L bulb, then filled it with the gas at 1.60 atm and 29.0 C and wei…
1. To make a voltaic cell, a strip of copper is placed in a 1 M solution of copp
1. To make a voltaic cell, a strip of copper is placed in a 1 M solution of copper nitrate and a strip of silver is placed in a 1 M solution of silver nitrate. The two metal strip…
1. To reduce problems that may occur in generating queries and reports, you coul
1. To reduce problems that may occur in generating queries and reports, you could place lookup values into a...? Data Type List Field Table 2. All of the following are performed i…
1. To what Celsius temperature must 67.5 mL of krypton gas at 17.0°C be changed
1. To what Celsius temperature must 67.5 mL of krypton gas at 17.0°C be changed so the volume will triple? Assume the pressure and the amount of gas are held constant. Enter your …
1. Tomatoes are rich in vitamin C. () Suggest the problem(s) that might arise if
1. Tomatoes are rich in vitamin C. () Suggest the problem(s) that might arise if a student used the procedure in this experiment to determine the vitamin C content in a tomato. (2…
1. Tomatoes are rich in vitamin C. () Suggest the problem(s) that might arise if
1. Tomatoes are rich in vitamin C. () Suggest the problem(s) that might arise if a student used the procedure in this experiment to determine the vitamin C content in a tomato. (2…
1. Tonic water, quinine, and malaria Quinine (C2oH24N202, MW 324 g/mol) has two
1. Tonic water, quinine, and malaria Quinine (C2oH24N202, MW 324 g/mol) has two amine groups with pKb 5.10 and pKb2 9.70. Quinine was originally extracted from the bark of the cin…
1. Translate the following code into MIPS code. Test (int i, int j) { int k; k =
1. Translate the following code into MIPS code. Test (int i, int j) { int k; k = i +j +10; …
1. Treatment of 2-hexanone with potassium dichromate in sulfuric acid will give
1. Treatment of 2-hexanone with potassium dichromate in sulfuric acid will give which of the following products? a) hexanol b) hexanal c) hexanoic acid d) unreacted 2-hexanone wil…
1. Treatment of Poison Ivy Rash A compound found in poison ivy and poison oak th
1. Treatment of Poison Ivy Rash A compound found in poison ivy and poison oak that produces the characteristic itchy rash is shown below. The pKa of this molecule is -8. mhe disso…
1. True or False- The martensitic transformation in a through hardening steel pu
1. True or False- The martensitic transformation in a through hardening steel puts tensile or seperating stresses at the surface of the steel at room temperature. 2. True or False…
1. True or False. a. A positively charged ion is called an anion. b. If an atom
1. True or False. a. A positively charged ion is called an anion. b. If an atom gives up an electron, it creates negatively charged ion. c. Valence electrons are the electrons tha…
1. True or False: A. C 2 H 4 is a saturated compound. B. There are a number of s
1. True or False: A. C2H4 is a saturated compound. B. There are a number of structures with the formula C6H14 C. In hydrocarbons C atoms have 4 covalent bonds. D.…
1. True or False: The solid-gas and solid-liquid coexistence lines always have p
1. True or False: The solid-gas and solid-liquid coexistence lines always have positive slopes in the phase diagram of a pure substance. 2. True or False: The molar Gibbs free ene…
1. True or False? It is legal in a superclass for a method to overload a method
1. True or False? It is legal in a superclass for a method to overload a method in a subclass. Explain. 2. Write the Java code to declare a new class Bee which is a subclass of In…
1. True or false- occasionally an asteroid will break into fragments due to a co
1. True or false- occasionally an asteroid will break into fragments due to a collision. These fragments, which often contain ice, can leave the asteroid belt and even make their …
1. True or false: A. A compound of N and Cl is covalent. B. A Ca 2+ has 2wo more
1. True or false: A. A compound of N and Cl is covalent. B. A Ca2+ has 2wo more protons than a Ca atom C. Isotopes of an element have different mass numbers D. Whe…
1. True or false? In an ion the number of protons differs from the number of ele
1. True or false? In an ion the number of protons differs from the number of electrons. Once postulated, a scientific theory cannot be altered. The group 8A elements have very sta…
1. Two aqueous sulfuric acid solutions containing 15.0 wt% H2SO, sG-1.139, and 7
1. Two aqueous sulfuric acid solutions containing 15.0 wt% H2SO, sG-1.139, and 70.0 wt% H2SO4, SG-1.498, are mixed to form a 5.00 molar solution, SG-1.213. a) Calculate the mass f…
1. Two aqueous sulfuric acid solutions containing 15.0 wt% H2SO, sG-1.139, and 7
1. Two aqueous sulfuric acid solutions containing 15.0 wt% H2SO, sG-1.139, and 70.0 wt% H2SO4, SG-1.498, are mixed to form a 5.00 molar solution, SG-1.213. a) Calculate the mass f…
1. Two of the liquids, n-pentane and 1-butanol, have nearly the same molecular w
1. Two of the liquids, n-pentane and 1-butanol, have nearly the same molecular weights, but significantly different changes in temperature during evaporation. Explain the differen…
1. Two of the liquids, n-pentane and 1-butanol, have nearly the same molecular w
1. Two of the liquids, n-pentane and 1-butanol, have nearly the same molecular weights, but significantly different changes in temperature during evaporation. Explain the differen…
1. Two of the proposed mechanisms (one Oxone mechanism and one permanganate mech
1. Two of the proposed mechanisms (one Oxone mechanism and one permanganate mechanism) be eliminated immediately. Discuss which ones, being specific about what makes them unreason…
1. Two resonance forms for SOCl2 are given below. :cl-s C1 Which is favored by t
1. Two resonance forms for SOCl2 are given below. :cl-s C1 Which is favored by the octet rule and which by formal charge considerations? A) I is favored by the octet rule and by f…
1. Type 1 and type 2 diabtes both have different underlying causes, but have the
1. Type 1 and type 2 diabtes both have different underlying causes, but have the same end result: ________ (my guess is increased blood glucose levels, is this correct?) 2. Descri…
1. Under normal physiological assumptions, one human exhalation contains 5.1 x 1
1. Under normal physiological assumptions, one human exhalation contains 5.1 x 10-2 g of carbon dioxide. Assuming 15 breaths per minute per person and a world population of 6.0 x …
1. Under normal physiological assumptions, one human exhalation contains 5.1 x 1
1. Under normal physiological assumptions, one human exhalation contains 5.1 x 10-2 g of carbon dioxide. Assuming 15 breaths per minute per person and a world population of 6.0 x …
1. Under what conditions are ketone bodies formed and what are their uses in the
1. Under what conditions are ketone bodies formed and what are their uses in the body? 2. Mammals are unable to use fatty acids in gluconeogenesis (synthesis of glucose from nonca…
1. Undo using a stack. Use the Stack data structure to implement a simple Undo o
1. Undo using a stack. Use the Stack data structure to implement a simple Undo operation. The user will enter a sequence of positive integers and Undo operations (represented by -…
1. Unesterified cholesterol is taken-up to serum lipoprotein and delivers to the
1. Unesterified cholesterol is taken-up to serum lipoprotein and delivers to the liver. Which serum lipoprotein plays this role? a. Very-low-density lipoprotein b.Low-density lipo…
1. Urea ((NH 2 ) 2 CO) can be formed from ammonia and carbon dioxide as shown in
1. Urea ((NH2)2CO) can be formed from ammonia and carbon dioxide as shown in the following reaction. H° value for this synthesis is -134.0 kJ, and S° is -424.0 J/K. Calculate the …
1. Use Table 1.4 from your textbook to calculate the mass or volume for the foll
1. Use Table 1.4 from your textbook to calculate the mass or volume for the following samples of substances, then calculate the number of moles and atoms/molecules in each case. a…
1. Use a genetic algorithm to train a feedforward neural network with one hidden
1. Use a genetic algorithm to train a feedforward neural network with one hidden layer and unipolar discrete (sgn) activation function to classify characters: A E. 2. The construc…
1. Use a table of Ka or Kb values to determine whether Kc for the following reac
1. Use a table of Ka or Kb values to determine whether Kc for the following reaction is less than, equal to or greater than 1. CH3CO2- + HSO4- <=> CH3CO2H + SO42- 2. Conside…
1. Use a table of Ka or Kb values to determine whether Kc for the following reac
1. Use a table of Ka or Kb values to determine whether Kc for the following reaction is less than, equal to or greater than 1. CH3CO2- + HSO4- <=> CH3CO2H + SO42- 2. Conside…
1. Use a table of Standard Reduction Potentials to predict if a reaction will oc
1. Use a table of Standard Reduction Potentials to predict if a reaction will occur between Sn metal and F2(g), when the two are brought in contact via standard half-cells in a vo…
1. Use a word from the word bank to answer the following questions. Beer-Lambert
1. Use a word from the word bank to answer the following questions. Beer-Lambert Law Absorbance Blank Source Absorption spectrum Cuvet Test tube Analyte Calibration curveLambda ma…
1. Use an Aldrich catalog to complete the following table: M.W Hazards Acetone E
1. Use an Aldrich catalog to complete the following table: M.W Hazards Acetone Ethanol Where should the thermometer bulb be placed in order to measure the temperature of the hot v…
1. Use an Aldrich catalog to complete the following table: M.W Hazards Acetone E
1. Use an Aldrich catalog to complete the following table: M.W Hazards Acetone Ethanol Where should the thermometer bulb be placed in order to measure the temperature of the hot v…
1. Use an Aldrich catalog to complete the following table: M.W. bp Hazards Aceto
1. Use an Aldrich catalog to complete the following table: M.W. bp Hazards Acetone Ethanol 2. Is distillation a purification or a characterization technique? Explain. . Where shou…
1. Use correct significant figures a) During one laboratory we have worked with
1. Use correct significant figures a) During one laboratory we have worked with AgNO3 0.5 M. How many atoms of silver have we in 0.1mL of this solution? During one laboratory we h…
1. Use given values as stated below. 2. Clearly State Answer 3. Message me if Yo
1. Use given values as stated below. 2. Clearly State Answer 3. Message me if You are currently working on the problems. Classify each of the following elements as an electrical c…
1. Use given values as stated in questions below. 2. Clearly State Answer 3. (Pl
1. Use given values as stated in questions below. 2. Clearly State Answer …
1. Use information in the balanced chemical formula below to answer the next 4 q
1. Use information in the balanced chemical formula below to answer the next 4 questions C2H6 + 7 F2 2 CF4 + …
1. Use of the selection construct. 2. Use of the iteration construct. 3. Use of
1. Use of the selection construct. 2. Use of the iteration construct. 3. Use of nested constructs. 4. Use of counters. 5. Calculation of an average. Your project must meet all spe…
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