Chemistry concepts and calculations

12. I The earth\'s radius is 6.37 X 10° m; it rotates once every 24 hours. a. Wh

12. I The earth's radius is 6.37 X 10° m; it rotates once every 24 hours. a. What is the earth's angular speed? b. Viewed from a point above the north pole, is the angular velocit…

12. If NaCl is added to a saturated solution of AgCl, the equilibrium will shift

12. If NaCl is added to a saturated solution of AgCl, the equilibrium will shift back towards the reactants; and the solubility of AgCI will decrease. 19. In the formation of iron…

12. If a programer or CPU designer decides to increase the number of bits used t

12. If a programer or CPU designer decides to increase the number of bits used to represent a certain type of data value, which of the following statement(s) will be true? 15.The …

12. If it takes 36.84ml of 0.02M KMnOs to titrate hydrogen peroide at in the ori

12. If it takes 36.84ml of 0.02M KMnOs to titrate hydrogen peroide at in the original ide after it is diluted present 10 times with water, what is the amount in grams of H202 solu…

12. If two substances are soluble in all proportions then they arein each other

12. If two substances are soluble in all proportions then they arein each other a. miscible b. nonpolar c. immiscible d. neutral e polar 13. Choose the statement below that is tru…

12. In a solution, when the concentrations of a weak acid and its conjugate base

12. In a solution, when the concentrations of a weak acid and its conjugate base are equal,…. [A] the system is not at equilibrium [B] the -log of the [H+] and the -log of the K…

12. In an open system for water, where carbon dioxide is present in the atmosphe

12. In an open system for water, where carbon dioxide is present in the atmosphere as a source of carbonate, how would you expect the carbonate concentrations in solution to chang…

12. In an open system for water, where carbon dioxide is present in the atmosphe

12. In an open system for water, where carbon dioxide is present in the atmosphere as a source of carbonate, how would you expect the carbonate concentrations in solution to chang…

12. Inorganic phosphorous is spectrophotochemically measured in blood serum by f

12. Inorganic phosphorous is spectrophotochemically measured in blood serum by formation of a reduced heteropoly acid (heteropoly blue) and comparison of its absorbance with a sta…

12. It is not advisable to use open flames in organ A) Organic chemicals cannot

12. It is not advisable to use open flames in organ A) Organic chemicals cannot widhstand the high temperasures sfve B) Organic chemistry laboratory exercises usually call with lo…

12. It is sot advisable to use open flames in organic laberatories becase A1 Org

12. It is sot advisable to use open flames in organic laberatories becase A1 Organic chemicals cannot withstand the high temperatares gemeraned by Bunsen burness B) Orpasie chemis…

12. Nest parasites are species of birds that lay eggs in the nests of other bird

12. Nest parasites are species of birds that lay eggs in the nests of other birds, where their eggs will be incubated and their young fed by the breeding pair of another species. …

12. Ozone, O, is a produced in automobile exhaust by the reaction represented by

12. Ozone, O, is a produced in automobile exhaust by the reaction represented by the equation Nola) + 02(g) OO(g) + Orlg). What mass of ozone is predicted to form from the reactio…

12. Place a formal charge on each of the atoms indicated by the arrow shown on t

12. Place a formal charge on each of the atoms indicated by the arrow shown on the structures below. N-CH 13. Shown below is the partial structure of a steroid. r (a) How many ter…

12. Predict whether the following will fully dissociate, partially dissociate, o

12. Predict whether the following will fully dissociate, partially dissociate, or not dissociate when dissolved in solution: (3 points) a a. Sodium sulfate, Na2S04(s), a strong el…

12. Propane gas (C,Hs, molar mass is 44.10 g/mol) is typically used as a fuel in

12. Propane gas (C,Hs, molar mass is 44.10 g/mol) is typically used as a fuel in gas grills and a key component in the grilling of bratwurst during the summertime. The combustion …

12. Properties of a Buffer The amino acid glycine is often used as the main ingr

12. Properties of a Buffer The amino acid glycine is often used as the main ingredient of a buffer in biochemical experiments. The amino group of glycine, which has a pKa of 9.6, …

12. Selective precipitation of Ba2+ and Pb2+ with CrO4^2- addition, (C) PbCrO4 w

12. Selective precipitation of Ba2+ and Pb2+ with CrO4^2- addition, (C) PbCrO4 will precipitate first and at [CrO4^2-] = 8.1 x 10^-10 M BaCrO4 will begin precipitation. Among the …

12. Standard temperature for gases is 25°C. 13. The SI unit of energy is the Jou

12. Standard temperature for gases is 25°C. 13. The SI unit of energy is the Joule. 14. Gases move at very high speeds. __ 15 . Boyle determined that volume is inversely proportio…

12. The aqucous solution of which salt will have the strongest cation-dipole int

12. The aqucous solution of which salt will have the strongest cation-dipole interaction? a. NaCl 13. Enough water is added to 11.5 g of ethanol to make 2.00 L of solution. What i…

12. The average atomic massofatomic chlorine is 35.45 amu. This makes sense, acc

12. The average atomic massofatomic chlorine is 35.45 amu. This makes sense, according to the mass spectrum to the right, because (B) ue to its larger peal largest peak. the avera…

12. The decomposition of nitroglycerine is an explosive reaction that produces f

12. The decomposition of nitroglycerine is an explosive reaction that produces four different gases. How many moles of water will be formed when 11.35 g of nitroglycerine decompos…

12. The efficiency of an enzyme in catalysing a reaction is due to its capacity

12. The efficiency of an enzyme in catalysing a reaction is due to its capacity A. To from a strong enzyme-substrate complex B. To decrease the bond energies in the substrate mole…

12. The equilibrium constant for the reaction: AgBr(s) Ag (aq) Br (aq) AgBr(s) A

12. The equilibrium constant for the reaction: AgBr(s) Ag (aq) Br (aq) AgBr(s) Ag+(aq) Br (aq) is the solubility product constant, K 7.7 x 10-13 at 25°C. Calculate AG for the reac…

12. The folloing figure is the successive Ionization energy of some element 5.5

12. The folloing figure is the successive Ionization energy of some element 5.5 5.0 4.5 4.0 3.5 3.0 2.5 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th 12th Electron removed Figure …

12. The folloing figure is the successive Ionization energy of some element 5.5

12. The folloing figure is the successive Ionization energy of some element 5.5 5.0 4.5 4.0 3.5 3.0 2.5 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th 12th Electron removed Figure …

12. The following shows radioactive chemical reaction. Find out x, y and z in th

12. The following shows radioactive chemical reaction. Find out x, y and z in the reaction. a) 239 on Pu Kr 2 n 36 239 133 98 Sb Y zan. 51' 13. Vapor pressure of naphthalene (C10H…

12. The molar absorption coefficient for a he compound undergoes a photochemical

12. The molar absorption coefficient for a he compound undergoes a photochemical bleaching reaction. The product does not mol cm at 313 nm hereu 313 nm. A 1.5 x 10° M solution of …

12. The possible value(s) of the magnetic quantum number,m, for a af electron is

12. The possible value(s) of the magnetic quantum number,m, for a af electron is (are) 0, 1. 2, 3 1, 2, 3, 4 C. 13) Green light has a wavelength of 510 nm. What is the wavelength …

12. The sequestration of carbon dioxide is critical to reducing greenhouse emiss

12. The sequestration of carbon dioxide is critical to reducing greenhouse emissions. Taking a lesson from planet earth, which stored carbon dioxide as alkali and alkaline earth m…

12. The sequestration of carbon dioxide is critical to reducing greenhouse emiss

12. The sequestration of carbon dioxide is critical to reducing greenhouse emissions. Taking a lesson from planet earth, which stored carbon dioxide as alkali and alkaline earth m…

12. True/False T F (a) Cd +2 has one unpaired d electron. T F (b) Complexes of C

12. True/False T F (a) Cd+2 has one unpaired d electron. T F (b) Complexes of Co+3 are colored , whereas those of Hg+2 are colorless. T F (c) Complexes wi…

12. Use the AHf information provided to calculate Horn for the following: ompoun

12. Use the AHf information provided to calculate Horn for the following: ompoun So2Cl2(g) 364 H2O0) HCI(g) H2SO4) -814 -286 92 SOCl2(g) + 2 H20(A A) 100 kJ 2 HCI(g) + H2SO4(/) C)…

12. What is responsible for capillary action, a property of liquids? a) surface

12. What is responsible for capillary action, a property of liquids? a) surface tension b) cohesive forces c) adhesive forces d) viscosity e)…

12. What is the lowest energy electron configuration of tantalum (Ta)? A) 1s22s2

12. What is the lowest energy electron configuration of tantalum (Ta)? A) 1s22s22p63s23p63d104s24p64d105s25p3 B) 1s22s22p63s23p63d104s24p64d105s25p66s25d3 C) 1s22s22p63s23p63d104s…

12. What reaction does pyruvate kinase catalyze? 13. Understand the key role of

12. What reaction does pyruvate kinase catalyze? 13. Understand the key role of the central metabolite pyruvate. What are the possible fates of pyruvate after glycolysis? 14. Comp…

12. What reagent(s) are required to complete the following reaction? a. Five mol

12. What reagent(s) are required to complete the following reaction? a. Five molar equivalents of acetyl chloride b. Five molar equivalents of acetic anhydride. Five molar equival…

12. What would be the best compound to use on an acid spill in a lab? A, H B. Na

12. What would be the best compound to use on an acid spill in a lab? A, H B. NaOH C. NaHCO D, NH Why is it not advisable to wear contact lenses in the lab? A. 13. Lenses could in…

12. When (2S,3S)-2-bromo-3-methylpentane undergoes reaction with sodium methoxid

12. When (2S,3S)-2-bromo-3-methylpentane undergoes reaction with sodium methoxide in methanol, the product is A) 3-methyl-1-pentene B) 2-methyl-1-pentene C) (Z)-3-methyl-2-pente…

12. When 50.0 mL of 1.00 M Pb(NO3)2 (d = 1.30 g/mL) and 50.0 mL of 1.50 M KI (d

12. When 50.0 mL of 1.00 M Pb(NO3)2 (d = 1.30 g/mL) and 50.0 mL of 1.50 M KI (d = 1.18 g/mL) are mixed in a constant-pressure calorimeter, a precipitate forms and the temperature …

12. Which of the following factors increases the rate of a chem the activation e

12. Which of the following factors increases the rate of a chem the activation energy barrier? a increasing the temperature b. decreasing the temperature es the rate of a chemical…

12. Which of the following is a TRUE statement about gas? One mole of argon gas

12. Which of the following is a TRUE statement about gas? One mole of argon gas is at one atmosphere of pressure and 25 °C. How can a scientist increase the volume of the fläsk? C…

12. Which of the following is an incorrect statement about A) FeBr3 functions to

12. Which of the following is an incorrect statement about A) FeBr3 functions to increase the electrophilicity of Br B)Formation of the the bromination of benzene by Br2 2. sigma …

12. Which of the following is paired inconotby A. Amorphous solids-considerable