Chemistry concepts and calculations

11) If a gas occupies 5 L at 298 K, what temperature is needed to reduce the vol

11) If a gas occupies 5 L at 298 K, what temperature is needed to reduce the volume to 2 L if the pressure does not change? 12) AN AUTOMOBILE TIRE IS INITIALLY AT 32 PSI (2.17 ATM…

11) P 1 = 20 N/cm 2 n 1 = no. moleculess/AvagadroNo. = 6 x 10 23 /6x10 23 = 1 mo

11) P1 = 20 N/cm2    n1 = no. moleculess/AvagadroNo. = 6 x 1023/6x1023 = 1 mol P2 = ?         n2 = 2x 6 x 1023/6x1023 = 2 mol Therefore, from ideal gas law at constant volume, P1/…

11) Sulfur and fluorine react in a combination reaction to produce sulfur hexafl

11) Sulfur and fluorine react in a combination reaction to produce sulfur hexafluoride: 11) S(s) + 3F2(g) SF6(g) A 7.90-g sample of fluorine yields __________ g of SF6. A) 10.1 B)…

11) Tetrahydrofolate (THF) and its derivatives shuttle between different substra

11) Tetrahydrofolate (THF) and its derivatives shuttle between different substrates. a) electrons b) H+ c) acyl groups d) one carbon units e) NH2 groups 12) The ribosyl phosphate …

11) The law of states that energy that can be neither created nor destroyed A) p

11) The law of states that energy that can be neither created nor destroyed A) potential energy B) thermochemistry C) the conservation of energy D) the consecration of energy E) k…

11) The location in the cell where ATP is produced is the b) lysosome c) nucleus

11) The location in the cell where ATP is produced is the b) lysosome c) nucleus d) cell membrane 12) Which choice is a goal of catabolism? a) the production of heat b) the attach…

11) The pH of mon concentration is 0.010M a monoprotio acid solution is 6.20. Ca

11) The pH of mon concentration is 0.010M a monoprotio acid solution is 6.20. Calculate the K, for the cid. The inia 12) What is the pH of o.30 M ammonia solution? K of Ammonia is…

11) The reaction quotient, ec, for a reaction has a value of 75 while the equili

11) The reaction quotient, ec, for a reaction has a value of 75 while the equilibrium constant, Kc, has a value of 195. Which of the following statements is accurate? A) The conce…

11) The volume of a gas with a pressure of 1.2 atm increases from 1 L to 4L. wha

11) The volume of a gas with a pressure of 1.2 atm increases from 1 L to 4L. what is the final pressure of the gas... 15. How Many liters of oxygen gas form when 294 g of KClO3 co…

11) The volume of a gas with a pressure of 1.2 atm increases from 1 L to 4L. wha

11) The volume of a gas with a pressure of 1.2 atm increases from 1 L to 4L. what is the final pressure of the gas... 15. How Many liters of oxygen gas form when 294 g of KClO3 co…

11) Two different 1.2 L buffered solutions were prepared using HOBI and LiOBr. B

11) Two different 1.2 L buffered solutions were prepared using HOBI and LiOBr. Both buffered solutions had a pH of 5.2 at 25°C. After 0.17 moles of HI were added to each of the so…

11) What are the coefficients in front of NO 3 - ( aq ) and Cu( s ) when the fol

11) What are the coefficients in front of NO3-(aq) and Cu(s) when the following redox equation is balanced in an acidic solution: ___ NO3-(aq) + ___ Cu(s) ___ NO(g) + ___ Cu2+(aq)…

11) What are the coefficients in front of NO 3 - ( aq ) and Cu( s ) when the fol

11) What are the coefficients in front of NO3-(aq) and Cu(s) when the following redox equation is balanced in an acidic solution: ___ NO3-(aq) + ___ Cu(s) ___ NO(g) + ___ Cu2+(aq)…

11) What is the length of the half-life in minutes, of anisotope, if after 1.00

11) What is the length of the half-life in minutes, of anisotope, if after 1.00 hours, 20% of the starting materialremains? 12) A sample originally contained 50 Ci (microcuries) o…

11) What was one source of missing or unaccounted for Q7 12) What was a second a

11) What was one source of missing or unaccounted for Q7 12) What was a second additional source of missing or unaccounted for Qr? 13) How would the calculated fame T be affected …

11) Which of the following is true? A) In a reaction mechanism, an intermediate

11) Which of the following is true? A) In a reaction mechanism, an intermediate is identical to an activated complex B) If we know that a reaction is an elementary reaction, then …

11) Which of the following is true? A) In a reaction mechanism, an intermediate

11) Which of the following is true? A) In a reaction mechanism, an intermediate is identical to an activated complex B) If we know that a reaction is an elementary reaction, then …

11) Which one of the following is a FALSE comparison between Ethene and Ethyne s

11) Which one of the following is a FALSE comparison between Ethene and Ethyne structures? A) Carbon-carbon bond distance:                  Ethene > Ethyne B)   HCC bond angle:…

11) Write ONE statement that creates and initializes a static variable named sal

11) Write ONE statement that creates and initializes a static variable named sales Tax to 7.59. 12) Write ONE statement that creates a constant variable named TAX_PATE. The tax ra…

11) of the choices below, which gives the order for first ionization energies A)

11) of the choices below, which gives the order for first ionization energies A) Cl S Al Ar Si B) Ar Cl S> Si Al C) Al Si S Cl Ar D) Cl S Al Si Ar E) S Si Cl Al Ar 12) listed. …

11)A radioactive sample contains 1.95 g of an isotope with a half-life of 3.7 da

11)A radioactive sample contains 1.95 g of an isotope with a half-life of 3.7 days. What mass of the isotope will remain after 5.6 days? (Assume no excretion of the nuclide from t…

11-12 QUESTION 11 2 points Save Answer Stu Dent has a third unknown salt contain

11-12 QUESTION 11 2 points Save Answer Stu Dent has a third unknown salt containing one of the nine anions used in this lab. He performs classification test A, but no reaction occ…

11-Spring16-EVANS Activities and Due Dates - HW 6 O 5/10/2016 11:55 PM 0 22.2/10

11-Spring16-EVANS Activities and Due Dates - HW 6 O 5/10/2016 11:55 PM 0 22.2/1005/10/2016 04:26 PM Gra -Print Calculator ba Periodic Table Print Calulator Periodic Table Question…

11. (10 pts) Match the terms (a-j) with the descriptions (1-10) a) Tertiary stru

11. (10 pts) Match the terms (a-j) with the descriptions (1-10) a) Tertiary structure 7. Compact regions that 1. Basic component of may be connected by flexible segment of polypep…

11. (10 pts) Match the terms (a-j) with the descriptions (1-10) a) Tertiary stru

11. (10 pts) Match the terms (a-j) with the descriptions (1-10) a) Tertiary structure 7. Compact regions that 1. Basic component of may be connected by flexible segment of polypep…

11. (15 points) Assume a Disjoint Set data structure has initially 20 data items

11. (15 points) Assume a Disjoint Set data structure has initially 20 data items with each in its own disjoint set (one-node tree). Show the final result (only show the array P fo…

11. (15 pointy) CrOH),() as a Kp of 3.0x 102 A. Write a reaction representing th

11. (15 pointy) CrOH),() as a Kp of 3.0x 102 A. Write a reaction representing the dissolution of Cr(OH)3 (s). B. Write the Ksp equilibrium constant expression. C. Will a saturated…

11. (4 points) For the acid/base reaction a. What is the acid? b. What is the ba

11. (4 points) For the acid/base reaction a. What is the acid? b. What is the base? c. What is the conjugate base? d. What is the conjugate acid? 12. The pH of a solution is measu…

11. (4 pts) Initiation of the translation process requires energy. Select a choi

11. (4 pts) Initiation of the translation process requires energy. Select a choice below that describes a step in this process that requires GTP hydrolysis. O GTP hydrolysis occur…

11. (4 pts) Initiation of the translation process requires energy. Select a choi

11. (4 pts) Initiation of the translation process requires energy. Select a choice below that describes a step in this process that requires GTP hydrolysis. O GTP hydrolysis occur…

11. (Ipt ea) The following reaction is exothermic: Predict which direction the e

11. (Ipt ea) The following reaction is exothermic: Predict which direction the equilibrium will shift for of the following stresses placed on the system. (Consider each independen…

11. (a) A solution of K, [Fe(C,0)l of concentration 0.0060 M is contained in a c

11. (a) A solution of K, [Fe(C,0)l of concentration 0.0060 M is contained in a cell of thickness 20 mm and is irradiated with light of wavelength 400 nm. The molar absorption coef…

11. -/9 points SerCP11 19.P.038 My Notes Ask Your Teacher A current-carrying rec

11. -/9 points SerCP11 19.P.038 My Notes Ask Your Teacher A current-carrying rectangular wire loop with width a = 0.115 m and length b-0.205 m is in the xy-plane, supported by a n…

11. -3 points Notes The particle-on-a-ring is a useful model for the motion of e

11. -3 points Notes The particle-on-a-ring is a useful model for the motion of electrons around a conjugated macrocycle such as octatetrene, for example. Treat the molecule as a c…

11. -3 points SerCP11 11P002. A medium-sized pear provides about 102 Calories of

11. -3 points SerCP11 11P002. A medium-sized pear provides about 102 Calories of energy HINT (a) Convert 102 Cal to joules. (b) Suppose that amount of energy is transformed into k…

11. A buffer used to denature proteins include the following components: a. 25 m

11. A buffer used to denature proteins include the following components: a. 25 mM Tris-Hcl, pH 8.2 b. 8 M Urea c. 200 mM Glycine d. 10 mM beta-mercaptoethanol e. 250 mM NaC In the…

11. A buffer used to denature proteins include the following components: a. 25 m

11. A buffer used to denature proteins include the following components: a. 25 mM Tris-Hcl, pH 8.2 b. 8 M Urea c. 200 mM Glycine d. 10 mM beta-mercaptoethanol e. 250 mM NaC In the…

11. A destructor is automatically called when? 12. A destructor is called when a

11. A destructor is automatically called when? 12. A destructor is called when an object scope of existence has ___________? 13. or because it is an object dynamically assigned an…

11. A dietician argues that the cabbage soup and other fad diets are not safe be

11. A dietician argues that the cabbage soup and other fad diets are not safe because they don't provide essential amino acids. He recommends adding meat cheese, nuts, and fish. a…

11. A fuel-air mixture is placed in a cylinder fitted with a piston The original

11. A fuel-air mixture is placed in a cylinder fitted with a piston The original volume is 0.245-L When the mixture is ignited, gases are produced and s65 Jof energy is released. …

11. A gas is allowed to expand, at constant temperature, from a volume of 2.08 L

11. A gas is allowed to expand, at constant temperature, from a volume of 2.08 L to 9.06 L against an external pressure of0.643 atm. Ifthe gas absorbs 332 J of heat from the surro…

11. A given hydrocarbon is burned in the presence of oxygen gas and is converted

11. A given hydrocarbon is burned in the presence of oxygen gas and is converted completely to carbon dioxide and water. Equal numbers of moles of CO2 and H2O are produced. The hy…

11. A gravimetric methods was used to determine the amount of chloride in 4.5009

11. A gravimetric methods was used to determine the amount of chloride in 4.5009 g unknown sample. A 1.3130 grams of silver chloride was obtained. Please determine the weight perc…

11. A group of students were measuring the normal boiling points of a series of

11. A group of students were measuring the normal boiling points of a series of compounds with the same approximate molecular masses: butane (CHH.CHCH.CH), acetone (CHCOCH) and 1 …

11. A large quantity of chemical energy is stored in a gummy bear, which is prim

11. A large quantity of chemical energy is stored in a gummy bear, which is primarily sugar, C12H22O11. When a gummy bear is placed in molten KClO3, the sugar is oxidized accordin…

11. A liver cell is undergoing gluconeogenesis. What would the effect be on the

11. A liver cell is undergoing gluconeogenesis. What would the effect be on the rate of gluconeogenesis for each of the following? Explain your answer. Increasing the concentratio…

11. A reaction mechanism usually is a. the same as the balanced chemical equatio

11. A reaction mechanism usually is a. the same as the balanced chemical equation. b. restricted to only one possible explanation. c. obvious if the reaction order is known. d. di…

11. A reaction mechanism usually is a. the same as the balanced chemical equatio

11. A reaction mechanism usually is a. the same as the balanced chemical equation. b. restricted to only one possible explanation. c. obvious if the reaction order is known. d. di…

11. A solution is prepared by mixing 50.0 g glucose (C6H1206) with 600.0 g of wa

11. A solution is prepared by mixing 50.0 g glucose (C6H1206) with 600.0 g of water. What is the vapor pressure of this solution at 25 degree C? [At 25 degree C the vapor pressure…

11. A split peak for IR absorption due to bond stretching is observed for the ca

11. A split peak for IR absorption due to bond stretching is observed for the carbonyl group in which of these compounds? 12. What can be determined from the relative abundance of…