Chemistry concepts and calculations

1.why it is necessary to select only one wavelength to pass through the sample (

1.why it is necessary to select only one wavelength to pass through the sample (i.e. why don’t we just shine white light into the sample and measure the amount of light that passe…

1.why was it necessary in all the kinetic runs to keep constant the total volume

1.why was it necessary in all the kinetic runs to keep constant the total volume of the reacgents afer mixing? (that is why was is necessary to add distelled water inverse propoet…

1/ 1-Chlorobutane 2/ 1-Bromobutane 3/ 2-Chlorobutane 4/ 2-Chloro-2-methylpropane

1/ 1-Chlorobutane 2/ 1-Bromobutane 3/ 2-Chlorobutane 4/ 2-Chloro-2-methylpropane 5/ 2-Bromo-2-methylpropane 6/ bromobenzene 7/ 1-Chloro-2-methylpropane 8/ 2-Bromobutane 9/ 2-Bromo…

1/ 1-Chlorobutane 2/ 1-Bromobutane 3/ 2-Chlorobutane 4/ 2-Chloro-2-methylpropane

1/ 1-Chlorobutane 2/ 1-Bromobutane 3/ 2-Chlorobutane 4/ 2-Chloro-2-methylpropane 5/ 2-Bromo-2-methylpropane 6/ bromobenzene 7/ 1-Chloro-2-methylpropane 8/ 2-Bromobutane 9/ 2-Bromo…

1/ 2 Questions Please answer the following questions. Limited partial credit wil

1/ 2 Questions Please answer the following questions. Limited partial credit will be given. 1. A student performs the following steps to isolate bipheny from a soid 1:1 micture of…

1/ As a warm up, calculate the mass percent, molality, mole fraction of solute,

1/ As a warm up, calculate the mass percent, molality, mole fraction of solute, and normality of a 1.37M aqueous citric acid solution ( which has three acidic protons) if the dens…

1/ Calculate the Mulliken electronegativity of Fluorine in Pauling units (using

1/ Calculate the Mulliken electronegativity of Fluorine in Pauling units (using the above equation), and compare to the Pauling electronegativity for Fluorine, which is given at W…

1/ Construct a while() loop, which computes the sum of all multiples of 7 and 8

1/ Construct a while() loop, which computes the sum of all multiples of 7 and 8 for numbers 1 - 500. Show all variable declarations. 2/ Construct a for() loop, which computes the …

1/ Convert 0.75 atmospheres to mm Hg, torr, and kPa. A gaseos mixture of 2.5 mol

1/ Convert 0.75 atmospheres to mm Hg, torr, and kPa. A gaseos mixture of 2.5 mol Ar, 3.5 mol CO2, and 0.75 mol of H2 has total pressure of 11 atm. What is the mole fraction of H2?…

1/ Suppose you are given two clay balls of equal size and shape. The two clay ba

1/ Suppose you are given two clay balls of equal size and shape. The two clay balls also weight the same. One ball is flattened into a pancake-shaped piece. Which of these stateme…

1/ Suppose you are given two clay balls of equal size and shape. The two clay ba

1/ Suppose you are given two clay balls of equal size and shape. The two clay balls also weight the same. One ball is flattened into a pancake-shaped piece. Which of these stateme…

1/ The Following data was obtained while observing a reaction between nitric oxi

1/ The Following data was obtained while observing a reaction between nitric oxide and hydrogen: F2(g) + 2CLO2(g) -----> 2FCLO2(g) Experiment Initial(F2) Initial(CLO2) Initial …

1/ The purpose of a titration experiment is to: Select one: a. measure the amoun

1/ The purpose of a titration experiment is to: Select one: a. measure the amount of heat absorbed or released by a reaction. b. calculate the rate at which a reaction occurs. c. …

1/ The wet adiabatic lapse rate: A/ is caused by the release of latent heat duri

1/ The wet adiabatic lapse rate: A/ is caused by the release of latent heat during the condensation of water vapor B/ is generally constant C/ is associated with rising air D/ all…

1/ a. A scuba diver 60 ft below the ocean surface inhales 70.0 mL of compressed

1/ a. A scuba diver 60 ft below the ocean surface inhales 70.0 mL of compressed air from a scuba tank at an initial pressure of 3.20 atm and temperature of 5 C. What is the final …

1/ calculate the equilibrium constant, Kc, for the following reaction at 25 celc

1/ calculate the equilibrium constant, Kc, for the following reaction at 25 celcius, if the equilibrium concentrations are [H2] = 0.106 M, [I2] = 0.022 M and [HI] = 1.29 M. H2(g) …

1/ determine the number of moles of aluminum permanganate in a 975. gram sample

1/ determine the number of moles of aluminum permanganate in a 975. gram sample of aluminum permanganate. 2/ determine the total number of atoms in a 355. gram sample of calcium a…

1/ the total volume of hydrogen gass needed to fill the Hindenburge was 2x10^8 l

1/ the total volume of hydrogen gass needed to fill the Hindenburge was 2x10^8 liters at 1 atm and 25*C. How Much energy was evolved when it burned ? H2(g) + .5O2(g) ----> H2O(…

1/2 N2O4 (g) ------> NO2(g) delta H = 28.6 kJ at 30 degrees C, k = 5.1 x 10^6/s,

1/2 N2O4 (g) ------> NO2(g)    delta H = 28.6 kJ at 30 degrees C, k = 5.1 x 10^6/s, and the activation energy id 54.0 kJ/mol USE THIS INFO FOR THE 3 questions 1.) this reaction…

1/20/2018 11:59 PM 6.3/100 1/18/2018 05:29 PM m Print Calculator Periodic Table

1/20/2018 11:59 PM 6.3/100 1/18/2018 05:29 PM m Print Calculator Periodic Table Gradebook O Assignment Info Question 2 of 16 Available From: Mapd Due Date: Sapling Learning Points…

1/20/2018 11:59 PM 6.3/100 1/18/2018 05:29 PM m Print Calculator Periodic Table

1/20/2018 11:59 PM 6.3/100 1/18/2018 05:29 PM m Print Calculator Periodic Table Gradebook O Assignment Info Question 2 of 16 Available From: Mapd Due Date: Sapling Learning Points…

1/2018 05:40 PM A 4.6/10 Print Calculator Penodic Table on 10 of 13 neral Chemis

1/2018 05:40 PM A 4.6/10 Print Calculator Penodic Table on 10 of 13 neral Chemistry 4th Edition University Science Books presented by Sapling Leaming At 850 K the equilibrium cons…

1/25/2018 12:00 AM A 60/100 Gradebook Print Calculator Periodic Table Question 2

1/25/2018 12:00 AM A 60/100 Gradebook Print Calculator Periodic Table Question 2 of 5 Map General Chemistry 4th Edition University Science Books presented by Sapling Leaming A stu…

1/25/2018 12:00 AM A 60/100 Gradebook Print Calculator Periodic Table Question 2

1/25/2018 12:00 AM A 60/100 Gradebook Print Calculator Periodic Table Question 2 of 5 Map General Chemistry 4th Edition University Science Books presented by Sapling Leaming A stu…

1/25/2018 12:00 AM60/100 Gradebook PrintCalculatar Periodic Table Question 4 of

1/25/2018 12:00 AM60/100 Gradebook PrintCalculatar Periodic Table Question 4 of 5 General Chemistry 4th Edition University Science Books presented by Sapling Leaming A mineral sam…

1/25/2018 12:00 AM60/100 Gradebook PrintCalculatar Periodic Table Question 4 of

1/25/2018 12:00 AM60/100 Gradebook PrintCalculatar Periodic Table Question 4 of 5 General Chemistry 4th Edition University Science Books presented by Sapling Leaming A mineral sam…

1/29/2018 08:00 AM 48.3/501/21/2018 04:15 PM + Print Calculator Periodic Table i

1/29/2018 08:00 AM 48.3/501/21/2018 04:15 PM + Print Calculator Periodic Table incorrect stion 21 of 30 IncorrectXI Sapling Learning macmilan laarning Identify the exact numbers i…

1/29/2018 08:00 AM 48.3/501/21/2018 04:15 PM + Print Calculator Periodic Table i

1/29/2018 08:00 AM 48.3/501/21/2018 04:15 PM + Print Calculator Periodic Table incorrect stion 21 of 30 IncorrectXI Sapling Learning macmilan laarning Identify the exact numbers i…

1/Atom 1 has the larger standard molar entropy because it has fewer energy level

1/Atom 1 has the larger standard molar entropy because it has fewer energy levels at lower energy values than atom 2. 2/Atom 1 has the larger standard molar entropy because the en…

1/By drawing a table discuss by comparing and contrasting the physical propertie

1/By drawing a table discuss by comparing and contrasting the physical properties values of water,H2O and hydrogen sulphide,H2S in terms of their : Boiling Points and Flash Points…

1/Explain the principle of privacy. What impact has IT made on privacy? Describe

1/Explain the principle of privacy. What impact has IT made on privacy? Describe the privacy paradox. Do you agree that a person’s privacy is based to a large extent on what choic…

1/For each reaction below, indicate whether or not the reaction will proceed wri

1/For each reaction below, indicate whether or not the reaction will proceed written: ^ 2Cl- + F2---> Cl2 +2F- Br- + I2 --->Br2 +2I- Sn(s) + Cu+2---> Sn+2 + Cu(s) 2Ag(s) …

1/For each reaction below, indicate whether or not the reaction will proceed wri

1/For each reaction below, indicate whether or not the reaction will proceed written: ^ 2Cl- + F2---> Cl2 +2F- Br- + I2 --->Br2 +2I- Sn(s) + Cu+2---> Sn+2 + Cu(s) 2Ag(s) …

1/How are the reactions involved in this investigation classified? Combination r

1/How are the reactions involved in this investigation classified? Combination reactions Decomposition reactions Exchange reactions Oxidation of Metals Combustion reactions when a…

1/What is the limiting reagent for the banana oil synthesis? and Why 2. What is

1/What is the limiting reagent for the banana oil synthesis? and Why 2. What is the purpose of an acid, such as sulfuric acid, in a Fischer esterification reaction( banana oil syn…

10 &11 The freezing point of 21 2 g of NaCl in 135 mL of water (K_r = 1.86 C/m)

10 &11 The freezing point of 21 2 g of NaCl in 135 mL of water (K_r = 1.86 C/m) is -5.00 degree C -4.60 degree C 9.99 degree C 11.5 degree C The reaction 2N_2O_5(g) 2N_2O_4 (g…

10 (5 points). Dumbledorium, a very rare element, is found in trace quantities i

10 (5 points). Dumbledorium, a very rare element, is found in trace quantities in broomsticks used in Quidditch (sports) matches at Hogwarts Academy of Witchcraft and Wizardry (sc…

10 (5 points). Dumbledorium, a very rare element, is found in trace quantities i

10 (5 points). Dumbledorium, a very rare element, is found in trace quantities in broomsticks used in Quidditch (sports) matches at Hogwarts Academy of Witchcraft and Wizardry (sc…

10 (a) which atoms are nucleophilic centers G.e., can react with electrophiles)?

10 (a) which atoms are nucleophilic centers G.e., can react with electrophiles)? (b)Which atoms are electrophilic centers (i.ee., can react with nucleophiles)? (c) Which atoms are…

10 0001 11.55 PM 12.2/100 10/16/2017 12:23 PM Periodic Table Print lCalculator G

10 0001 11.55 PM 12.2/100 10/16/2017 12:23 PM Periodic Table Print lCalculator Gradebook Question 5 of 23 Chemical Principles 7th Edition MHE/Freeman presanted by Sapling Leaming …

10 1 point Choose all that apply for the following statements about the acid/bas

10 1 point Choose all that apply for the following statements about the acid/base behavior of water: HO molecules sannot accept a proton (H'), and are thus not stable as H:O ions …

10 12 14 2011-2017 Sapling Learning Inc. Quaration 12 20 Sapling Learning Which

10 12 14 2011-2017 Sapling Learning Inc. Quaration 12 20 Sapling Learning Which statement below best explains why fermentulion in mammals? O Hproduaes an acid that maintains blood…

10 120 course and explain how the ethylene glycol water solutions works to help

10 120 course and explain how the ethylene glycol water solutions works to help antifreeze and/or act as coolant to protect the vchicles engines based on following Figure 4. An an…

10 2017 Organic Chemistry II Lab Fall 2017 Synthesis of Aniline (part I & 2) I.

10 2017 Organic Chemistry II Lab Fall 2017 Synthesis of Aniline (part I & 2) I. Why must the solution be made alkaline (ie. addition of Na0H) before stexm distillation 2. If N…

10 8 7 2 0 ppm Chemical shift (8) When the integral is measured for a multiplet

10 8 7 2 0 ppm Chemical shift (8) When the integral is measured for a multiplet in an H'-NMR spectrum, the for each part of the multiplet is ignored and the integral is measured o…

10 CM.014 My A sample of 58.50 g solid benzene at -2.4°C was heated until it a f

10 CM.014 My A sample of 58.50 g solid benzene at -2.4°C was heated until it a final phase and final temperature of the benzene sample bsorbed 13.5 kJ of heat t, at a constant pre…

10 CM.014 My A sample of 58.50 g solid benzene at -2.4°C was heated until it a f

10 CM.014 My A sample of 58.50 g solid benzene at -2.4°C was heated until it a final phase and final temperature of the benzene sample bsorbed 13.5 kJ of heat t, at a constant pre…

10 H-Br 7 2 3 Br -Br catalyst (a) Which atoms are nucleophilic centers (i.e., ca

10 H-Br 7 2 3 Br -Br catalyst (a) Which atoms are nucleophilic centers (i.e., can react with electrophiles)? (b) Which atoms are electrophilic centers (i.e., can react with nucleo…

10 Identify the functional group in A. carboxylic anhydride B. carboxylic ester

10 Identify the functional group in A. carboxylic anhydride B. carboxylic ester C. carboxylic acid D. amide 11. Carbohydrates have the general formula. Which of the following stat…

10 Introductory Chemistry 2017/18 H8IICH Part C (50 marks) Calculation of the Mo

10 Introductory Chemistry 2017/18 H8IICH Part C (50 marks) Calculation of the Molarity of copper in the "Brass Contaminated Sand (BCS) solution" and the calculation of the % w/w c…