Chemistry concepts and calculations

6. Calcium carbonate. CaCo, reacts with stomach acid (HCl, hydrochloric acid) ac

6. Calcium carbonate. CaCo, reacts with stomach acid (HCl, hydrochloric acid) according to the following equation: CaCO3(s) +. 2 HCI(aq) CaCl2(aq) + Hd)(1) + COdg) One tablet of T…

6. Calcium hydroxide (\'\'slacked lime\'\') and sulfuric acid (H2SO4) react to p

6. Calcium hydroxide (''slacked lime'') and sulfuric acid (H2SO4) react to produce calcium sulfate and water (H2O). a. What is the formula for calcium hydroxide? b. What is the fo…

6. Calculate &H; for the processHace(s)--2Hgo-cag) from the following informatio

6. Calculate &H; for the processHace(s)--2Hgo-cag) from the following information: (3 pts) 7. Calculate the enthalpy of combustion of 2.50 mol of propane, C3H8(g), for the for…

6. Calculate delta S o (in J/K) for the reaction 2CH 4 ---> C2H6 (g) + H 2 (g) S

6. Calculate delta So(in J/K) for the reaction 2CH4 ---> C2H6 (g) + H2 (g) So (CH4) = 186.3 J/mol K     So(C2H6) = 229.5 J/mol K     So(H2) = 130.6 J/mol K 7. a) Given that Ka …

6. Calculate the amount of enengy relcased (QMe/mol) when 1 mole of \'H fuses wi

6. Calculate the amount of enengy relcased (QMe/mol) when 1 mole of 'H fuses with 1 mole of 'H to make one mole of 'He (There is one more product. Figure out what it is.) The requ…

6. Calculate the amount of enengy relcased (QMe/mol) when 1 mole of \'H fuses wi

6. Calculate the amount of enengy relcased (QMe/mol) when 1 mole of 'H fuses with 1 mole of 'H to make one mole of 'He (There is one more product. Figure out what it is.) The requ…

6. Calculate the following, and make sure to show your work, including units and

6. Calculate the following, and make sure to show your work, including units and substance on every numerical value:               a. What is the molarity of a solution that is ma…

6. Calculate the molarity of 444 g KBr in 800 ml of solution. 31 7. How many mol

6. Calculate the molarity of 444 g KBr in 800 ml of solution. 31 7. How many moles of KBr are contained in 110 ml of a 2.0 x10* mM KBr solution? 8. How would you prepare 500 mL of…

6. Calculate the molarity of a barium hydroxide solution if 25.0 mL of barium hy

6. Calculate the molarity of a barium hydroxide solution if 25.0 mL of barium hydroxide required 21.83 mL of 0.576M hydrochloric acid for complete neutralization. 7. The Midnight …

6. Calculate the pH of the 0.20 M NH 3 /0.20 M NH 4 Cl buffer. What is the pH of

6.      Calculate the pH of the 0.20 M NH3/0.20 M NH4Cl buffer. What is the pH of the buffer after the addition of 10.0 mL of 0.10 M HCl to 65.0 mL of the buffer? 7.      A 0.2688…

6. Calculate the solubility product of silver iodide at 25°C given the following

6. Calculate the solubility product of silver iodide at 25°C given the following data: 1. AgI(s) + e– Ag(s) + I– E° = –0.15 2. I2(s) + 2e– 2I– E° = +0.54 3. Ag+ + e– Ag(s) E° = +0…

6. Calculate the standard enthalpy change for the reaction 2CaHi (l) + 1 702(g)

6. Calculate the standard enthalpy change for the reaction 2CaHi (l) + 1 702(g) ? 16C0(g) + 181 1201). Given: 2CsH,s(l) + 250tg) ?16COdg) + 18H20(1) ?l®--11,020 kJ/mol ?? 10-.-566…

6. Calculate the standard reaction enthalpy for the following reaction. CH4(g) +

6. Calculate the standard reaction enthalpy for the following reaction. CH4(g) + H2O(g) CO(g) + 3H2(g) Given: 2H2(g) + CO(g) CH3OH(1) 2CH4(g) + 02(g) 2CH3OH(1) 2H2(g) + O2(g) 2H2O…

6. Calculate the theoretical number of moles of O2 there would be if the hydroge

6. Calculate the theoretical number of moles of O2 there would be if the hydrogen peroxide were 100% when mixed with yeast solution. Theoretical moles of O2 = H2O2 volume x H2O2 d…

6. Calculate the value of the K, for the unknown aeid HA from the data at the po

6. Calculate the value of the K, for the unknown aeid HA from the data at the poirt at which 4.70 mL of NaOH have been added to the acid. Read the pH from your graph. This should …

6. Chemical Equilibrium (15 marks total) Consider the equilibrium at 25°C: PCI(g

6. Chemical Equilibrium (15 marks total) Consider the equilibrium at 25°C: PCI(g) PC,() + Ch(g) and the information: Substance PCls(g) -324.6 -286.3 0 398.9 -306.4 0 Ch(g) Compute…

6. Combustion! In this problem you will test the idea that most of the calories

6. Combustion! In this problem you will test the idea that most of the calories in food product come from fats, carbohydrates, and protein. Find out how many grams of fats/carbohy…

6. Conside the following JavaScript skeletal program: //The main Program var x;

6. Conside the following JavaScript skeletal program: //The main Program var x; function sub1(){ var x; function sub2(){ .... } } function sub3(){ ... } Assume that the execution …

6. Consider a N2 molecule in a one dimensional box. a) Calculate the difference

6. Consider a N2 molecule in a one dimensional box. a) Calculate the difference in the two lowest energy levels for L = 1 Å , 100 Å, 108 Å in eV b) Assume the N2 molecule has an a…

6. Consider a balloon of nitrogen gas and a crystal of sugar sitting on a table

6. Consider a balloon of nitrogen gas and a crystal of sugar sitting on a table at room conditions . Select the appropriate statement to fill in the blanks of each of the followin…

6. Consider information. us solution of 4.5mM BaCl, Use Table 7-1 on page 147 of

6. Consider information. us solution of 4.5mM BaCl, Use Table 7-1 on page 147 of your text book for necessary 6.a) D etermine the ionic strength (u) of the solution. 100 points 6.…

6. Consider the diagram below, showing the size variation of a TCP congestion wi

6. Consider the diagram below, showing the size variation of a TCP congestion window under TCP-Reno congestion management. For each question below, briefly justify your answer. a.…

6. Consider the following balanced acid/base reaction: 2 CH3COOH + Ba(OH)2 -> (C

6. Consider the following balanced acid/base reaction: 2 CH3COOH +   Ba(OH)2 -> (CH3COO)2Ba   + 2 H2O A student pipetted 5.00 mL of a 0.224M solution of CH3COOH into an Erlenme…

6. Consider the following equilibrium: The equilibrium mixture is separated into

6. Consider the following equilibrium: The equilibrium mixture is separated into 2 tubes. 1 mL of 1.0M H2C204 is added to tube 1 and 1 ml of 1.0M K2C20s is added to tube 2. Precip…

6. Consider the following equilibrium: The equilibrium mixture is separated into

6. Consider the following equilibrium: The equilibrium mixture is separated into 2 tubes. 1 mL of 1.0M H2C204 is added to tube 1 and 1 ml of 1.0M K2C20s is added to tube 2. Precip…

6. Consider the following orthogonal protecting groups than can be utlized in th

6. Consider the following orthogonal protecting groups than can be utlized in the synthesis of a complex and branched peptide Protecting group Deprotection Boc, tBu |90% TFA to Al…

6. Consider the following reaction at constant P. Use the information here to de

6. Consider the following reaction at constant P. Use the information here to determine the value of Ssurr at 355 K. Predict the spontaneity of the reaction at this temperature. 2…

6. Consider the following reaction at equilibrium 2CO2(g) 2CO(g) + O2(g) + heat

6. Consider the following reaction at equilibrium 2CO2(g) 2CO(g) + O2(g) + heat The addition of O2 to this reaction container will a decrease the amount of Co2(8) at equilibrium. …

6. Consider the following reaction: Fill in the table below showing which direct

6. Consider the following reaction: Fill in the table below showing which direction (left, right, equilibrium to re-establish equilibrium and the effect (increase, decrease, no ef…

6. Consider the following reaction: HCI (aq) NaOH (a)H20(NaCI (aq) a. If HCl is

6. Consider the following reaction: HCI (aq) NaOH (a)H20(NaCI (aq) a. If HCl is the analyte and NaOH is the titrant, then sketch the titration curve for this reaction. Be sure to …

6. Consider the following reaction: [S 02, ex 3] Cr^3+(aq) + SCN^-(aq) --> CrSCN

6. Consider the following reaction: [S 02, ex 3] Cr^3+(aq) + SCN^-(aq) --> CrSCN^2+(aq) In the presence of 0.500 M SCN- (a large excess), the reaction appears to be first order…

6. Consider the molecules CHs, NCl3, BFs, and CO2 a. In which compound are the b

6. Consider the molecules CHs, NCl3, BFs, and CO2 a. In which compound are the bonds most polar? b. Which compound on the list has the most nonpolar bonds? 7. Which of these would…

6. Consider the reaction: 2ClF3g) + 2NH3(g) arrow N2(g) + 6HF(g) + CI2(g) When c

6. Consider the reaction: 2ClF3g) + 2NH3(g) arrow N2(g) + 6HF(g) + CI2(g) When calculating the triangle H degree rxn, why is the triangle H degree f for N2 not important? A) Becau…

6. Conversion of C to °F is defined as °C-5/9 (°F-32) a. Calculate in °C where °

6. Conversion of C to °F is defined as °C-5/9 (°F-32) a. Calculate in °C where °F is 20° higher than °C (F C+ 20) b. Calculate in °C where is 20° lower than°C (°F-°C-20) c. Calcul…

6. DIscussion (1) During the calculation of 1 mole volume of carbon atoms, why w

6. DIscussion (1) During the calculation of 1 mole volume of carbon atoms, why we use density of diamond rather than that of graphite? (2) Avogadro's number is a conversion factor…

6. Determine the amount of sample to analyze: a. The measuring range of the bure

6. Determine the amount of sample to analyze: a. The measuring range of the burette in this experiment is O to 5 mmoles of acidic hydrogen. Decide how many mmoles of acidic hydrog…

6. Diamagnetic anisotropy causes the aromatic protons of benzene to be A. Shield

6. Diamagnetic anisotropy causes the aromatic protons of benzene to be A. Shielded B. Deshielded D. Homotopic E. Upfield 7. Rank the 1C NMR signals of the labeled carbon atoms in …

6. Diamagnetic anisotropy causes the aromatic protons of benzene to be A. Shield

6. Diamagnetic anisotropy causes the aromatic protons of benzene to be A. Shielded B. Deshielded D. Homotopic E. Upfield 7. Rank the 1C NMR signals of the labeled carbon atoms in …

6. Diet cola drinks have a pH of while about 7.0. How about 3.0. milk has a of m

6. Diet cola drinks have a pH of while about 7.0. How about 3.0. milk has a of many times greater is the Ho concentration cola than in milk A) 2.3 times in diet higher in diet col…

6. Differentiate between heat and temperature A. Temperature is a measure of hea

6. Differentiate between heat and temperature A. Temperature is a measure of heat intensity and heat is a form of energy B. Temperature is a form of energy and heat is the intensi…

6. Dr. Goodchem completed a thin Layer Chromatography of an unkown mixture. He h

6. Dr. Goodchem completed a thin Layer Chromatography of an unkown mixture. He had three spots to show up. The distance between the origin and the solvent front was 2.75 cm. The d…

6. Dr. Goodchem completed a thin Layer Chromatography of an unkown mixture. He h

6. Dr. Goodchem completed a thin Layer Chromatography of an unkown mixture. He had three spots to show up. The distance between the origin and the solvent front was 2.75 cm. The d…

6. Dr. Liu\'s bonus question for fun: You are working as a Regulatory Affairs sp

6. Dr. Liu's bonus question for fun: You are working as a Regulatory Affairs specialist at Bayer. The Director of Product Development comes to CH H3C you seeking your advice about…

6. Enterotoxinogenic Escherichia coli produce oligomeric human enterotoxins (hEt

6. Enterotoxinogenic Escherichia coli produce oligomeric human enterotoxins (hEtx) comprising one A-subunit (27,000 Daltons) and five B-subunits (11,700 Daltons). The "B-subunits …

6. Enzyme A follows Michaelis-Menten kinetics. a) The KM of enzyme A for its sub

6. Enzyme A follows Michaelis-Menten kinetics. a) The KM of enzyme A for its substrate S is KMS = 1.0 mM. Enzyme A also acts on substrate T and its KMT = 10.0 mM. Explain which is…

6. Ethanol is a flammable liquid/vapor . Eye contact : It causes severe eye irri

6. Ethanol is a flammable liquid/vapor. Eye contact: It causes severe eye irritation. It may also cause corneal damage. Skin contact: It causes moderate skin irritation. It may al…

6. Ethanol is a major ingredient of a camping fuel called \"Sterno\". If the ene

6. Ethanol is a major ingredient of a camping fuel called "Sterno". If the energy combustion of 5.00 g of ethanol (CH.O) is transferred without loss to 200.0 g of liquid e of rele…

6. Ethanol, C2H6O, is a substance used in the manufacture of alcoholic beverages

6. Ethanol, C2H6O, is a substance used in the manufacture of alcoholic beverages. Ethanol is a water-soluble liquid with a density of 0.790 g/mL at 25 °C. Calculate the molarity o…

6. Exactly 1.0 moles of each of the following compounds is dissolved in I OL of

6. Exactly 1.0 moles of each of the following compounds is dissolved in I OL of water. Which would bave the lowest p value HCO, b) HCI c) NHA d) KOH e) Hacos 7. In the following r…

6. Examine the following four amino acids (I, I,II,Iv) and answer the following

6. Examine the following four amino acids (I, I,II,Iv) and answer the following questions a) (8 pts) What are the three-letter abbreviation codes for amino acids 1-HV? NH, b) (4 p…