Chemistry concepts and calculations

(A) 1) P 4 + 3O 2 = P 4 O 6 ; H = -1640 kJ and 2) P 4 + 5O 2 = P 4 O 10 ; H = -2

(A) 1) P4 + 3O2 = P4O6; H = -1640 kJ and 2) P4 + 5O2 = P4O10; H = -2940 kJ then what is the change in enthalpy for the reaction: P4O6 + 2O2 = P4O10? The units are kJ. (B) Suppose …

(A) A 36.0 g piece of lead at 130.0 C is placed in 100.0 g of water at 20.0 C. W

(A) A 36.0 g piece of lead at 130.0 C is placed in 100.0 g of water at 20.0 C. What is the temperature (in C) of the water once the system reaches equilibrium? The molar heat capa…

(A) Arrange the following 2 o alkyl halides in the decreasing order of their rea

(A) Arrange the following 2o alkyl halides in the decreasing order of their reactivity in an SN1 reaction with a nucleophile. Give reasons for your answer. (B) Look up the structu…

(A) At 25 C, K = 81 for the reaction A( g ) + B( g ) ? C( g ) + D( g ). Initiall

(A) At 25 C, K = 81 for the reaction A(g) + B(g) ? C(g) + D(g). Initially, 0.100 mol of C(g) and 0.100 mol of D(g) are injected into a 1.00 L reaction vessel. What is the concentr…

(A) C 3 H 8 (g) + O 2 (g) ® CO 2 (g) + H 2 O (g) (b) C 3 H 8 (g) + O 2 (g) ® CO

(A)       C3H8 (g) + O2 (g) ® CO2 (g) + H2O (g) (b) C3H8 (g) + O2 (g) ® CO2 (g) + CO (g) + H2O (g) The equation presented above shows (a) combustion of propane with abundant oxyge…

(A) C3H8 (g) + O2 (g) ® CO2 (g) + H2O (g) (b) C3H8 (g) + O2 (g) ® CO2 (g) + CO (

(A) C3H8 (g) + O2 (g) ® CO2 (g) + H2O (g) (b) C3H8 (g) + O2 (g) ® CO2 (g) + CO (g) + H2O (g) The equation presented above shows (a) combustion of propane with abundant oxygen and …

(A) Calculate the partial pressure (in atm) of H 2 atequilibrium, when 1.69 atm

(A) Calculate the partial pressure (in atm) of H2 atequilibrium, when 1.69 atm of H2O dissociates at 1500 Kaccording to the following chemical equilbrium: 2 H2O (g) ? 2 H2 (g) +  …

(A) Calculate the values of the rate constant k assuming that the reaction is fi

(A)Calculate the values of the rate constant k assuming that the reaction is first order. What is the value of k at 5 s?  s-1 What is the value of k at 10 s?  s-1 What is the valu…

(A) Calculate the values of the rate constant k assuming that the reaction is fi

(A)Calculate the values of the rate constant k assuming that the reaction is first order. What is the value of k at 5 s?    What is the value of k at 10 s? What is the value of k …

(A) Calculate the values of the rate constant k assuming that the reaction is fi

(A)Calculate the values of the rate constant k assuming that the reaction is first order. What is the value of k at 5 s?  s-1 What is the value of k at 10 s?  s-1 What is the valu…

(A) Describe the acid-base characteristics of regions B, D and F and points A, C

(A) Describe the acid-base characteristics of regions B, D and F and points A, C and E. (B) Suppose that a titration vessel contains 100.00 ml of 0.100M H2B (K1 = 1.00 x 10-4 and …

(A) How many milliliters of 0.135 M HCl are needed to completely neutralize 47.0

(A) How many milliliters of 0.135 M HCl are needed to completely neutralize 47.0mL of 0.110 M Ba(OH)2 solution? V = ??mL Part B How many milliliters of 0.123 M H2SO4 are needed to…

(A) If a 3 oz candy bar produces 200 kcal on oxidation in the body, and if this

(A) If a 3 oz candy bar produces 200 kcal on oxidation in the body, and if this energy were convertible into work, how many candy bars would a 160 -lb man have to eat in order to …

(A) If you have (8.07x10^-2) grams of C6H8O6 (ascorbic acid or vitamin C), how m

(A) If you have (8.07x10^-2) grams of C6H8O6 (ascorbic acid or vitamin C), how many moles of ascorbic acid do you have? Write your answer in scientific notation, making sure you u…

(A) If you need exactly 0.493 moles of DCP to react completely with the ascorbic

(A) If you need exactly 0.493 moles of DCP to react completely with the ascorbic acid in a sample, how manygrams of ascorbic acid are there in the sample? (B) If the DCP solution …

(A) Suppose you add 92 ml of dilute acid to 46 ml of water. Both the water and a

(A) Suppose you add 92 ml of dilute acid to 46 ml of water. Both the water and acid were at room temperature (22 C) before being mixed. The temperature of the solution increased t…

(A) Suppose you cool a 16 oz can of beer by putting it in a cooler containing ic

(A) Suppose you cool a 16 oz can of beer by putting it in a cooler containing ice/water slush at 0 C. Use regular ounces for the weight (i.e. 16 oz = 1 pound) of the beer and NOT …

(A) The nucleic acids are polymers of nudeotices (8) Each nudeotide is made of a

(A) The nucleic acids are polymers of nudeotices (8) Each nudeotide is made of a phosphate group, a sugar ing and a (C) The three-dimensional structure of DNA is a two-chained hex…

(A) Which of the following statements about the uranium used in nuclear reactors

(A) Which of the following statements about the uranium used in nuclear reactors is or are true? Check all that apply.    The neutron-induced fission of 235U releases more neutron…

(A) [A] = - kt + [A] 0 After 150 s, 9.00 * 10 -2 = - k * (150) + [A] 0 --------

(A) [A] = - kt + [A]0 After 150 s, 9.00 * 10-2 = - k * (150) + [A]0 -------- (1) After 370 s, 1.50 * 10-2 = - k * ( 370 ) + [A]0 ----------- (2) do (1) - (2) 9.00 * 10-2 - 1.50 * …

(A) if a divalent metal ion is inserted in the center of the phorphinering, its

(A) if a divalent metal ion is inserted in the center of the phorphinering, its charge will be exactly balance the two negative chargesof the dianion. write a balanced equation fo…

(A) if a divalent metal ion is inserted in the centerof the phorphine ring, its

(A) if a divalent metal ion is inserted in the centerof the phorphine ring, its charge will be exactly balance the twonegative charges of the dianion. write a balanced equation fo…

(A) which physical constants other than melting point and melting points of mixt

(A) which physical constants other than melting point and melting points of mixtures may be used to aid in establishing the identity of an organic solid? (B) what other constant o…

(A) which physical constants other than melting point and melting points of mixt

(A) which physical constants other than melting point and melting points of mixtures may be used to aid in establishing the identity of an organic solid? (B) what other constant o…

(A)Calculate the PH at the equivalence point in titrating 0.100M SOLUTION OF CHL

(A)Calculate the PH at the equivalence point in titrating 0.100M SOLUTION OF CHLOROUS ACID(HCLO2) WITH 0.080MNaOH. (B)CALCULATE THE PH AT THE EQUIVALENCE POINT IN TITRATING 0.100M…

(A)Calculate the PH at the equivalence point in titrating 0.100M SOLUTION OF CHL

(A)Calculate the PH at the equivalence point in titrating 0.100M SOLUTION OF CHLOROUS ACID(HCLO2) WITH 0.080MNaOH. (B)CALCULATE THE PH AT THE EQUIVALENCE POINT IN TITRATING 0.100M…

(A.) Phosgene is a deadly gas made up of carbon, oxygen and chlorine. Its densit

(A.) Phosgene is a deadly gas made up of carbon, oxygen and chlorine. Its density at 1.05 atm and 25C. is 4.24 g/L. Show that the molecular formula of phossgene is COCl2 if it's c…

(A1) Determining Molar Absorptivity: A Serial Dilution of Benzophenone a) Weigh

(A1) Determining Molar Absorptivity: A Serial Dilution of Benzophenone a) Weigh 0.125 g of benzophenone into a 50.00 mL volumetric flask. Record the mass that you weigh to the nea…

(A1) x is the same person as y if and only if x is composed of all of the same a

(A1) x is the same person as y if and only if x is composed of all of the same atoms as y Which of the following describes a counterexample to (A1)? Peter Parker is the same perso…

(ADN), NH4N(NO2)2, is being considered as a possible replacement for ammonium pe

(ADN), NH4N(NO2)2, is being considered as a possible replacement for ammonium perchlorate as the oxidizer in the solid fuel booster rockets used to launch space shuttles. When det…

(ALL IN JAVA) Given a stack of integers , how would you check to see whether the

(ALL IN JAVA) Given a stack of integers , how would you check to see whether the product of each succesive pair of numbers in the stack is greater than the sum of the next pair or…

(ANSWER-Endothermic, a, e) ******I need help answering the following question in

(ANSWER-Endothermic, a, e) ******I need help answering the following question in details pease, thank you in advance. 1a) What type of question is this? 1b.) How do I know that it…

(Acidic) Vo^2+ (aq) rightarrow V^3+ (aq) Ni(OH)_2 (s) rightarrow Ni_2 O_3 (s) (A

(Acidic) Vo^2+ (aq) rightarrow V^3+ (aq) Ni(OH)_2 (s) rightarrow Ni_2 O_3 (s) (Acidic) No_3^- (aq) rightarrow No_2 (aq) Basic Br_2 (aq) rightarrow BrO_3^- (aq) Write the Balance n…

(Adapled from Density of Aqueous Naci solutions by Roos Nord and slephen E. Schu

(Adapled from Density of Aqueous Naci solutions by Roos Nord and slephen E. Schumery. ern Michigan Uni Objectives of a swhstance, exrensive properties associated wirh a specific s…

(Airline Reservations System) A small airline has just purchased a computer for

(Airline Reservations System) A small airline has just purchased a computer for its new automated reservations system. You’ve been asked to develop the new system. You are to writ…

(Algorith 3304 ) Let (Algorith 3304 ) Let\'s say that we are using upper-case le

(Algorith 3304 ) Let (Algorith 3304 ) Let's say that we are using upper-case letters as keys in a hash table, and that hash codes are assigned based on each letter's position in t…

(All in C++) How would I sort a vector of objects (each object contains three si

(All in C++) How would I sort a vector of objects (each object contains three sides of a triangel) based on their areas without another vector using another vector with areas? I h…

(All questions are 1 point) Part A. Please eirele the best answer. (1 point each

(All questions are 1 point) Part A. Please eirele the best answer. (1 point each) l. In which region would you look for C-H stretching modes? b. 1700-1600cm d. 1800-1600cm a. 2300…

(Already circled the monomeric units, just need the rest please) 2. Metaldehyde

(Already circled the monomeric units, just need the rest please) 2. Metaldehyde is used as a garden bait to attract and kill snails and slugs. It is synthesized by polymerizing fo…

(Analysis) a. You found a 125.0 ml contaminated water sample in the lab. This so

(Analysis) a. You found a 125.0 ml contaminated water sample in the lab. This solution is known to contain Silver Nitrate (AgNO,). Determine the original Molarity of silver ions (…

(Answer from question 4) HP + H2O is in equilibrium with P2 + H3O+ This axid wil

(Answer from question 4) HP + H2O is in equilibrium with P2 + H3O+ This axid will attack the base Assume 1 mol of KHP will neutralize 1 mol of NaOH V = 25 ml M = 0.1M Mol Acid = m…

(Answer the questions and turn in this at the beginning of the first week of Ani

(Answer the questions and turn in this at the beginning of the first week of Anion Lab) 1. Based on the solubility table given in Table 1, which cation (or cations) will form solu…

(Array class template) Use class Array as a class template. Demonstrate the new

(Array class template) Use class Array as a class template. Demonstrate the new Array class template in a program. Create a class RationalNumber(fractions) with the following capa…

(Artificial Intelligence Problem) Flappy Bird: http://flappybird.io/ Consider th

(Artificial Intelligence Problem) Flappy Bird: http://flappybird.io/ Consider the task of designing an intelligent agent to play Flappy Bird. Describe the performance measure. env…

(B) The dihedral angle between H-C1-C2-H in the range of 145-165 degrees (C) The

(B) The dihedral angle between H-C1-C2-H in the range of 145-165 degrees (C) The protons at C1 and C2 are perpendicular (D) The protons at C1 and C2 are eclipsed (E) The dihedral …

(B) To standardize a potassium permanganate solution, a 0.250 g sample of FAS (i

(B) To standardize a potassium permanganate solution, a 0.250 g sample of FAS (iron(II) ammonium sulfate hexahydrate; molar mass: 342 g) is dissolved in 25.00 mL distilled water, …

(B). Determine the compound (or the element) that is being oidized and reduced i

(B). Determine the compound (or the element) that is being oidized and reduced in each reaction and write down the oxidation numbers for compounds being oxidized and reduced Oxidi…

(B, o0, M-pli.iol O10Mp\"-101 267, 391, sms ser? A) What is the conecentration o

(B, o0, M-pli.iol O10Mp"-101 267, 391, sms ser? A) What is the conecentration of hydroxide ion in a blood A) 6.08 10 M (O 964-10.M () 2.51-10 'M (D) 3.98-10M 17. Caleulate the ptt…

(BAC) is often reported in weight-volume percent (w/v%). For example, a BAC of 0

(BAC) is often reported in weight-volume percent (w/v%). For example, a BAC of 0.08% corresponds to 0.08 g CH3CH2OH per 100 mL of blood. In Ontario, and the rest of Canada, the ma…

(BIOCHEMISTRY QUESTION) A new compound isolated from mitochondria is claimed to

(BIOCHEMISTRY QUESTION) A new compound isolated from mitochondria is claimed to represent a previously unrecognized carrier in the electron transfer chain. It is given the name co…