Chemistry concepts and calculations

15 Question (4 points) e See page 459 Amixture of 0.145 moles of C is reacted wi

15 Question (4 points) e See page 459 Amixture of 0.145 moles of C is reacted with 0.117 moles of O2 inasealed, 10.0 L vessel at 500.0 K. producing a mixture of CO and CO2. The li…

15 Question (4 points) e See page 459 Amixture of 0.145 moles of C is reacted wi

15 Question (4 points) e See page 459 Amixture of 0.145 moles of C is reacted with 0.117 moles of O2 inasealed, 10.0 L vessel at 500.0 K. producing a mixture of CO and CO2. The li…

15 REPORT FOR EXPERIMENT 16 ONS AND PROBLEMS to make sure that all the KHCO, was

15 REPORT FOR EXPERIMENT 16 ONS AND PROBLEMS to make sure that all the KHCO, was e KHCOs was reactod? QUESTIONs 1. What was done in the experiment to starting mass of KHCO,? less …

15 The formula ofaalt is xcia The X-ico in this sah has 30 protons. The metlXs A

15 The formula ofaalt is xcia The X-ico in this sah has 30 protons. The metlXs A) Ni B) Zn C) Fe D) V E) A 16 Elements exhibit similar physical and chemical properties A) with sim…

15 The formula ofaalt is xcia The X-ico in this sah has 30 protons. The metlXs A

15 The formula ofaalt is xcia The X-ico in this sah has 30 protons. The metlXs A) Ni B) Zn C) Fe D) V E) A 16 Elements exhibit similar physical and chemical properties A) with sim…

15 When two amino acids react to form a peptide bond, what new functional group

15 When two amino acids react to form a peptide bond, what new functional group is created? A) an alcohol B) an amine C) an amide D) an ester E) a phosphoester In the peptide Ser-…

15 Which of the fellowing was not used te make the indicetor solution a water b.

15 Which of the fellowing was not used te make the indicetor solution a water b. starech ?. juice d. iodine 16. Vitamin C is also known as b. eitric acid s ascorbic acid d. none o…

15 buttons and 15 different functions simple while loops and prompt functions pl

15 buttons and 15 different functions simple while loops and prompt functions please help!! Create a page named functionPractice.html You will create a bunch of functions to pract…

15 grams of Adipic acid is treated with excess thionyl chloride, and the resulti

15 grams of Adipic acid is treated with excess thionyl chloride, and the resulting acid dichloride is reacted with 20mL butyl amine (density=0.74 g/mL). After work up and recrysta…

15 grams of Adipic acid is treated with excess thionyl chloride, and the resulti

15 grams of Adipic acid is treated with excess thionyl chloride, and the resulting acid dichloride is reacted with 20mL butyl amine (density=0.74 g/mL). After work up and recrysta…

15 mL of 5% NaOH (w/v) is used to deprotonate the unknown carboxylic acid. The T

15 mL of 5% NaOH (w/v) is used to deprotonate the unknown carboxylic acid. The TBME is washed with an additional 10mL of the NaOH solution and then 20 mL of water which are all co…

15 ml. 3 tsp Mill grams cancel Check. The answer of 7.5 mL (not 0.75 or 75) is r

15 ml. 3 tsp Mill grams cancel Check. The answer of 7.5 mL (not 0.75 or 75) is reasonable. Since the required dose is larger than the dose in 2.5 mL, the answer must be larger tha…

15 pts 4. A galvanic ( voltaic) cell involves the following reduction half-cell

15 pts 4. A galvanic ( voltaic) cell involves the following reduction half-cell potentials Pt2" (aq) +2e'= Pt(s) , Eo=1.188 V PtC42. (aq) + 2e-= Pt(s) + 4 Cl. (aq) , Eo-0.726 V a)…

15 pts D Question 1. Using the approach/notation/data presented in lecture what

15 pts D Question 1. Using the approach/notation/data presented in lecture what is the predicted chemical shift of proton HA in ppm? Please provide just the numerical value, expre…

15% 88% CH4 H Tue 12:31 PM Q = chemresources.chemistry.dal.ca 13.34 1277 Safari

15% 88% CH4 H Tue 12:31 PM Q = chemresources.chemistry.dal.ca 13.34 1277 Safari File Edit View History Bookmarks Window Help capa.conceptsinchemistry.com LON-CAPA GA9 Question 5 C…

15) (12 pts) Find 1° for the reaction 2H2(g) + 2C(s) + Odg-Ch1sOH(1), using the

15) (12 pts) Find 1° for the reaction 2H2(g) + 2C(s) + Odg-Ch1sOH(1), using the following data. GHOH (1) + 2 02 (g) 2 co, (g) + 2 HsO (I) C (s) 02 (g) CO2 (g) Ha (g1+ ½ O2 (g) H2O…

15) 246 g of hot coffee at 86.0 ° C are placed in a 137 g mug at 20.0 ° C. The s

15) 246 g of hot coffee at 86.0 ° C are placed in a 137 g mug at 20.0 ° C. The specific heat of coffee is 4.00 J/g ° C, while that of the mug is 0.752 J/g ° C. Assuming no heat is…

15) CH,OH(s)+7 0-(g)- 6 CO(g)+3 H,00 When a 2.000-gram sample of pure phenol, C&

15) CH,OH(s)+7 0-(g)- 6 CO(g)+3 H,00 When a 2.000-gram sample of pure phenol, C&H; OH(s). is completely burned according to the equation above, 64.98 kilojoules of heat is rel…

15) For my doctoral studies, I synthesized stable metallacyclobutenes and studie

15) For my doctoral studies, I synthesized stable metallacyclobutenes and studied their reactivity with a variety of molecules, particularly alkenes. The main metallacyclobutene l…

15) For the following processes, state whether each of the four thermodynamic qu

15) For the following processes, state whether each of the four thermodynamic quantities q, w, U, H is greater than, equal to or less than zero for the system described. Consider …

15) The equilibrium of PC3 and Cl2 with PCls was studied by placing 1.0 mol of P

15) The equilibrium of PC3 and Cl2 with PCls was studied by placing 1.0 mol of PCs in a 20 liter container. When equilibrium was achieved, there was 0.78 mol of PCis r equilibrium…

15) The reaction 2 Os (3) -302 (g) is second order in Os, and the order with res

15) The reaction 2 Os (3) -302 (g) is second order in Os, and the order with respect to O2 is The found to be -1 rate constant is 26x IgA s-1 at a certain temperature. what is the…

15) UV An increase in conjugation is correlated with decrease in the energy of t

15) UV An increase in conjugation is correlated with decrease in the energy of the LUMO and increase in the energy of the HOMO, and increase in lmax. A) a decrease, an increase, a…

15) What part of a soil horizon collects nutrients and fine-grained material? A.

15) What part of a soil horizon collects nutrients and fine-grained material? A. Zone of leaching B. O-horizon C. B-horizon D. Zone of accumulation E. C & D 16) In tropical en…

15) Which one of the following is completely amorphous? a) iron b) diamond c) hi

15) Which one of the following is completely amorphous? a) iron b) diamond c) high density polyethylene d) window glass . 16) Which colored semiconductor material will have the sm…

15) the standard cell potential (E cell) for the voltaic cell based on the react

15) the standard cell potential (E cell) for the voltaic cell based on the reaction below is ?? (see above picture) 16) the standard cell potential of the reaction below is 0.126 …

15)Imagine windowsill and a 7so ml. solution leave in the or the solvent solutio

15)Imagine windowsill and a 7so ml. solution leave in the or the solvent solution of after evaporation? what uncowered on the the isthe 0.75 M s 16)The net ionic equation for the …

15)a 60.2 mL sample of a 0.588 M calcium nitrate (ca(No3)2)solution is mixed wit

15)a 60.2 mL sample of a 0.588 M calcium nitrate (ca(No3)2)solution is mixed with 80.5 ML of 1.396 M calcium nitrate.Calculate the concentration of the final solution number______…

15, water has a boiling point of 100 and water and 12 mol% 2-propuol distills at

15, water has a boiling point of 100 and water and 12 mol% 2-propuol distills at 804which ofthe following 2-propanol has a boiling poin hasa boiling point of82.5 Amature or 88 mon…

15,16 please show how you came to your answer hode esalt bridgsD negative elecod

15,16 please show how you came to your answer hode esalt bridgsD negative elecodeEv 15. A voltaic cell is represented as Znisszn (.0 MCu( M)xCuks) Which of the oshonwing s FALSE? …

15- Given the following reaction 4 2n No hich of the following statements is TRU

15- Given the following reaction 4 2n No hich of the following statements is TRUE? a) The N in Noo- gains electrons b) The H in OHT is r c) The oxygen in NO is oxidized d) The oxi…

15- When solutions of an acid and a base are reacted, the products are A. a new

15- When solutions of an acid and a base are reacted, the products are A. a new acid and a new base. B. a salt and water. C. a metal oxide and water. D. a nonmetal oxide and water…

15-18 When two atoms form a covalently-bonded diatomic molecule, the distance be

15-18 When two atoms form a covalently-bonded diatomic molecule, the distance between nuclei at which the potential energy is at a minimum is called the bond energy. the bond leng…

15-ANION ANALYSIS EXERCISES 1. The following results were obtained by a student

15-ANION ANALYSIS EXERCISES 1. The following results were obtained by a student with "superperfect" lab techniques. Give the anions that are present, absent, or indefinite (not en…

15-Which of the following are the correet relative priorities in the R/S system?

15-Which of the following are the correet relative priorities in the R/S system?) b au bromine >ethyl > hydrogen >methyl bromine > cthyl> methyl> hydrogen c hydr…

15. (2 pts) A Lewis acid is: a. an electron pair acceptor b. an electron pair do

15. (2 pts) A Lewis acid is: a. an electron pair acceptor b. an electron pair donor C. a proton acceptor d. a proton donor 16.HCl is a stronger acid than HF because: a. The HCl bo…

15. (2 pts) The following structure represents: Fatty acid unit Sugar unit A) ph

15. (2 pts) The following structure represents: Fatty acid unit Sugar unit A) phosphatidic acid B) phosphatidylcholine C) sphingomyelin D) cerebroside E) phosphatidylinositol 16. …

15. (23 points total) Show calculations for partial credit. A buffer is made fro

15. (23 points total) Show calculations for partial credit. A buffer is made from formic acid (HCHO2) and sodium formate (NaCHO.). The buffer has 0.2 moles of HCHO2 per liter of s…

15. -15 points My Notes Ask Your T A person inhales air richer in 02 and exhales

15. -15 points My Notes Ask Your T A person inhales air richer in 02 and exhales air richer in CO2 and water vapor. During each hour of sleep, a person exhales a total of 300. L o…

15. 0.2058 g of a steel sample was dissolved in acid. The manganese was oxidized

15. 0.2058 g of a steel sample was dissolved in acid. The manganese was oxidized to permanganate, MnO4 (FW 118.936), using potassium persulfate and was diluted to 250 mL. 2Mn® + 5…

15. 12.5/10 points | Previous Answers The energy required to remove the electron

15. 12.5/10 points | Previous Answers The energy required to remove the electron from the hydrogen atom can be calculated using Bohr's model, making the assumption that this energ…

15. 300 mL of 6.0 M glucose solution is diluted to 600 mL water. What is the new

15. 300 mL of 6.0 M glucose solution is diluted to 600 mL water. What is the new molarity of the glucose solution? A) 1.5 M B) 2.0 M C)3.0 M D) 6.0 M 16. Which of the following is…

15. A gas is placed in a container at a certain pressure and then conditions cha

15.      A gas is placed in a container at a certain pressure and then conditions change so that the pressure is doubled. Which of the following changes would double the pressure?…

15. A reaction takes place in the following elementary steps: (CH3)3C–Br –––> (C

15. A reaction takes place in the following elementary steps: (CH3)3C–Br –––> (CH3)3C + + Br– (slow) (CH3)3C + + H2O ––––> (CH3)3C–OH2 + (fast) (CH3)3C–OH2 + + H2O ––––> …

15. An aqueous solution contains 34% HCl by mass. A.Calculate the molality of th

15. An aqueous solution contains 34% HCl by mass. A.Calculate the molality of the solution. B.Calculate mole fraction of the solution. 16. Calculate the vapor pressure of a soluti…

15. An inductive effect refers to the movement of electrons through A. xbonds B.

15. An inductive effect refers to the movement of electrons through A. xbonds B. ??rbitals ?bonds 16. Meta- directing groups the rate of electrophilic substitution reactions rela-…

15. An inductive effect refers to the movement of electrons through_ A. xbonds B

15. An inductive effect refers to the movement of electrons through_ A. xbonds B. ??rbitals C. ?bonds 16. Meta-directing groups the rate of electrophilic substitution reactions re…

15. An iron bar at 325 K is placed in a sample 20. Which sample of Fe contains p

15. An iron bar at 325 K is placed in a sample 20. Which sample of Fe contains particles of water. The iron bar gains energy from the water if the temperature of the water is (1) …

15. An iron bar at 325 K is placed in a sample 20. Which sample of Fe contains p

15. An iron bar at 325 K is placed in a sample 20. Which sample of Fe contains particles of water. The iron bar gains energy from the water if the temperature of the water is (1) …

15. An isolated artificial containment lake from an industrial plant has the fol

15. An isolated artificial containment lake from an industrial plant has the following characteristics: pH = 10.4, [HCO]-5 x 10" mol/L, depth (average) = 15 m, area-8 ha, and has …