Chemistry concepts and calculations
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1O pIS)A large balloon for the Thanksgiving Day parade in New York is filled in
1O pIS)A large balloon for the Thanksgiving Day parade in New York is filled in a 20°C warehouse with He from 50 tanks, each with a volume of 20.0 L and 100 atm of the gas. A cold…
1O points). Hydrogen cyanide is a weak monoprotic acid with = 6.2 x 10-10. If 25
1O points). Hydrogen cyanide is a weak monoprotic acid with = 6.2 x 10-10. If 25.00 mL of 0.1039 M hydrogen cyanide is titrated with 0.05994 M NaOH, which of the following indicat…
1O points)Complete the following ta Name Silver nitride Formu Cu BO, Calcium ars
1O points)Complete the following ta Name Silver nitride Formu Cu BO, Calcium arsenite Tetrachlorine nonoxide Lead(IV) carbonate Pb(SO3) Plumbous nitrate SnF (S points) Draw the Le…
1Question 1: Find the algebraic answer and absolute uncertainty and express each
1Question 1: Find the algebraic answer and absolute uncertainty and express each answer with the correct amount of significant figures. 2.4 (± 0.5) 4.7 (± 0.1) × 5.5 (± 0.4) =____…
1Rank the following from high ionization energy to lowest Na, Al , Ar ,Cl, P 2Ra
1Rank the following from high ionization energy to lowest Na, Al , Ar ,Cl, P 2Rank the following from high ionization energy to lowest arsenic antimony, nitrogen , bismuth and pho…
1Rs/201s 11:ss PM Q 63.1hoo G 1/20/2015 o4:09 PM Grade boo Print Calculator Peri
1Rs/201s 11:ss PM Q 63.1hoo G 1/20/2015 o4:09 PM Grade boo Print Calculator Periodic Table Question 14 of 19 sapling earning Hexokinase catalyzes the first step of glycolysis, in …
1The dry adiabatic lapse rate is constant. ATrue BFalse 2All rain tends to be sl
1The dry adiabatic lapse rate is constant. ATrue BFalse 2All rain tends to be slightly acidic. ATrue BFalse 3The total amount of atmospheric water remains nearly constant. ATrue B…
1WKU Transfer Credit Infon! GEListsummer.pdf f GR rn Kentucky Uni × j.com/ibiscm
1WKU Transfer Credit Infon! GEListsummer.pdf f GR rn Kentucky Uni × j.com/ibiscms/mod/ibis/view.php?id-3983993 10/27/2017 12.00 AM em Print 643/10010/23/2017 03:43 PM Calculator P…
1You have been asked to prepare 100.0 mL of a buffer solution that is 0.150 M in
1You have been asked to prepare 100.0 mL of a buffer solution that is 0.150 M in acetic acid and 0.250 M in sodium acetate. Calculate the grams of each component that you would we…
1] When bitten by a red ant, the stinging sensation is caused by formic acid, th
1] When bitten by a red ant, the stinging sensation is caused by formic acid, the simplest of the organic weak acids. The dissociation reaction is: A 0.010 M solution of formic ac…
1_A correct statement about biosynthesis of saturated fatty acids containing an
1_A correct statement about biosynthesis of saturated fatty acids containing an even number of carbon atoms (up to 16 carbons) is: A. the process occurs within mitochondria with t…
1_Show that bimolecular reactions between nonlinear molecules are much slower th
1_Show that bimolecular reactions between nonlinear molecules are much slower than those between atoms even when the activation energies of both reactions are equal. Use transitio…
1_which of the following solvents ,hexane,methylene chloride,acetone, or methano
1_which of the following solvents ,hexane,methylene chloride,acetone, or methanol will give the best separation on a TLC plate of a mixure composed of the following : a) benzophen…
1a )When 50.0 mL of 0.500 M HCl at 25.0°C is added to 50.0 mL of 0.500 M NaOH at
1a )When 50.0 mL of 0.500 M HCl at 25.0°C is added to 50.0 mL of 0.500 M NaOH at 25.0°C in a coffee cup calorimeter, the temperature of the mixture rises to 28.2°C. What is the en…
1a . From the following vapor pressure data for octane , an estimate of the mola
1a. From the following vapor pressure data for octane, an estimate of the molar heat of vaporization of C8H18 is kJ/mol. 1b. The normal boiling point of liquid chloroform is 334…
1a Company Merger One of the more common reasons a company would consider an EAI
1a Company Merger One of the more common reasons a company would consider an EAI project is to combine redundant systems following a company merger. These efforts can range from s…
1a Database reports provide us with the ability to further analyze our data and
1a Database reports provide us with the ability to further analyze our data and provide it in a format that can be used to make business decisions. Discuss the steps that you woul…
1a) 1 A(aq) + 4 B(aq) --> 3 C(aq) + 2 D(aq) What is the rate of production of D,
1a) 1 A(aq) + 4 B(aq) --> 3 C(aq) + 2 D(aq) What is the rate of production of D, in mol L-1 s-1, if the rate of production of C is 0.470 mol L-1 s-1? Enter your answer accurate…
1a) 1 A(aq) + 4 B(aq) --> 3 C(aq) + 2 D(aq) What is the rate of production of D,
1a) 1 A(aq) + 4 B(aq) --> 3 C(aq) + 2 D(aq) What is the rate of production of D, in mol L-1 s-1, if the rate of production of C is 0.470 mol L-1 s-1? Enter your answer accurate…
1a) 32.4 kg of liquid 1 comes in thermal contact with 74.4 kg of liquid 2. If li
1a) 32.4 kg of liquid 1 comes in thermal contact with 74.4 kg of liquid 2. If liquid 1 has an initial temperature of 268 K, and a specific heat of 2.65 kJ/kg K, and liquid 2 has a…
1a) A gaseous system absorbs 97 J of heat and increases its internal energy by 8
1a) A gaseous system absorbs 97 J of heat and increases its internal energy by 85 J. Which of the following statements is correct? The volume of the system decreases and a positiv…
1a) A polystyrene ice chest contains 3 kg of ice at 0 C. Delta H for meting= 3.3
1a) A polystyrene ice chest contains 3 kg of ice at 0 C. Delta H for meting= 3.34E5 J/kg, p=1000kg/m^3, Cp= 4190J/(kg*K). …
1a) A reaction in carbohydrate metabolism occurs where glucose-6-phosphate react
1a) A reaction in carbohydrate metabolism occurs where glucose-6-phosphate reacts with NADP+ to give 6-phosphoglucono-?-lactone and NADPH. Which substance is oxidized, reduced? Wh…
1a) A sucrose solution is prepared to a final concentration of 0.220 M . Convert
1a) A sucrose solution is prepared to a final concentration of 0.220 M . Convert this value into terms of g/L, molality, and mass % (molecular weight, MWsucrose = 342.296 g/mol ; …
1a) A sucrose solution is prepared to a final concentration of 0.220 M . Convert
1a) A sucrose solution is prepared to a final concentration of 0.220 M . Convert this value into terms of g/L, molality, and mass % (molecular weight, MWsucrose = 342.296 g/mol ; …
1a) An Alka-Seltzer tablet contain 1.9 g of sodium bicarbonate (NaHCO3, MW 84.0)
1a) An Alka-Seltzer tablet contain 1.9 g of sodium bicarbonate (NaHCO3, MW 84.0) What is the potential volume of CO2 in mL produced by this pill at 35 degree Celcius (Body temp) a…
1a) Complete and balance the molecular equation, including phases, for the react
1a) Complete and balance the molecular equation, including phases, for the reaction of aqueous sodium sulfate, Na2SO4, and aqueous barium nitrate, Ba(NO3)2. Na2 SO4 (aq) + Ba (NO3…
1a) Explain the chemical reactions in fabricating nickel nanowires b) What is th
1a) Explain the chemical reactions in fabricating nickel nanowires b) What is the size of nickel nanowire and what would be the effect of inhaling nickel nanowires? c) What are ot…
1a) In terms of wavelength, frequency and energy compare the two photons with wa
1a) In terms of wavelength, frequency and energy compare the two photons with wavelengths of 900 nm and 780 nm. b) What are the emission spectra of an element? c) How are the em…
1a) In what region of the electromagnetic spectrum will the electron transitions
1a) In what region of the electromagnetic spectrum will the electron transitions from a higher energy state to n1=3 appear for the hydrogen spectrum? 1b) Calculate the wavelength,…
1a) Iron (II) chloride and sodium sulfide undergo adouble-replacement reaction w
1a) Iron (II) chloride and sodium sulfide undergo adouble-replacement reaction when mixed. Write a balanced chemicalequation for the reaction. 1b) If 40.0 g of iron (II) chloride …
1a) Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in
1a) Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory to standardize strong base solutions. It has the unwieldy formula of KHC8H4O4. This …
1a) Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in
1a) Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory to standardize strong base solutions. It has the unwieldy formula of KHC8H4O4. This …
1a) Ten drops of 1.0M Na 2 CO 3 are placed into each of two small test tubes. To
1a) Ten drops of 1.0M Na2CO3 are placed into each of two small test tubes. To the first test tube, 2 drops of 0.1 M Ca(NO3)2 is added, and to the second test tube, 2 drops of 0.1M…
1a) The hydronium ion concentration of an aqueous solution of 0.498 M nitrous ac
1a) The hydronium ion concentration of an aqueous solution of 0.498 M nitrous acid (Ka = 4.50×10-4) is [H3O+] = 1b) The pH of an aqueous solution of 0.498 M benzoic acid , C6H5COO…
1a) The pOH of an aqueous solution at 25°C was found to be 9.70. The pH of this
1a) The pOH of an aqueous solution at 25°C was found to be 9.70. The pH of this solution is . The hydronium ion concentration is M. The hydroxide ion concentration is M. 1b) The p…
1a) The reaction below reaches equilibrium in a closed reaction vessel. The enth
1a) The reaction below reaches equilibrium in a closed reaction vessel. The enthalpy change for the forward reaction is +135 kJ/mol. Does the mass of Na 2 CO 3 increase, decrease …
1a) The reaction below reaches equilibrium in a closed reaction vessel. The enth
1a) The reaction below reaches equilibrium in a closed reaction vessel. The enthalpy change for the forward reaction is +135 kJ/mol. Does the mass of Na 2 CO 3 increase, decrease …
1a) The reaction for the formation of phosgene from carbon monoxide and chlorine
1a) The reaction for the formation of phosgene from carbon monoxide and chlorine CO + Cl2COCl2 is first order in CO and first order in Cl2. Complete the rate law for this reaction…
1a) Under constant pressure a sample of hydrogen gas initially at 27.0 °C and 6.
1a) Under constant pressure a sample of hydrogen gas initially at 27.0 °C and 6.70 L is cooled until its final volume is 1.50 L. What is the final temperature? 1b) What is the eff…
1a) What characteristic band (frequency and corresponding functional group) is p
1a) What characteristic band (frequency and corresponding functional group) is present in the infrared spectrum of the alcohol and not the ketone? 1b) What characteristic band (fr…
1a) What is the pH of a 0.225 mol L1 ammonia solution? b) What is the percent io
1a) What is the pH of a 0.225 mol L1 ammonia solution? b) What is the percent ionization of ammonia at this concentration? 2) A new potential heart medicine, code-named X-281, is …
1a) Which of the following aqueous solutions are good buffer systems? . 0.19 M a
1a) Which of the following aqueous solutions are good buffer systems? . 0.19 M acetic acid + 0.11 M sodium acetate 0.39 M nitrous acid + 0.23 M sodium nitrite 0.30 M ammonium nitr…
1a) You mix 125.5mL of 4.5x10^-6 M cobalt (II) iodide with 525.5mL of 3.8x10^-5
1a) You mix 125.5mL of 4.5x10^-6 M cobalt (II) iodide with 525.5mL of 3.8x10^-5 M potassium carbonate. When you mix the two solutions you do not observe any reaction. Explain, wit…
1a) You mix 125.5mL of 4.5x10^-6 M cobalt (II) iodide with 525.5mL of 3.8x10^-5
1a) You mix 125.5mL of 4.5x10^-6 M cobalt (II) iodide with 525.5mL of 3.8x10^-5 M potassium carbonate. When you mix the two solutions you do not observe any reaction. Explain, wit…
1a) You mix 125.5mL of 4.5x10^-6 M cobalt (II) iodide with 525.5mL of 3.8x10^-5
1a) You mix 125.5mL of 4.5x10^-6 M cobalt (II) iodide with 525.5mL of 3.8x10^-5 M potassium carbonate. When you mix the two solutions you do not observe any reaction. Explain, wit…
1a) You mix 125.5mL of 4.5x10^-6 M cobalt (II) iodide with 525.5mL of 3.8x10^-5
1a) You mix 125.5mL of 4.5x10^-6 M cobalt (II) iodide with 525.5mL of 3.8x10^-5 M potassium carbonate. When you mix the two solutions you do not observe any reaction. Explain, wit…
1a) electronegativity? a. is a measure of an atom\'s attraction for an electron
1a) electronegativity? a. is a measure of an atom's attraction for an electron in a chemical bond b. is the total negative charge on a polyatomic anion c. is the same for all of t…
1a)(10 points) The reaction for the production of Fe metal from Iron (III) oxide
1a)(10 points) The reaction for the production of Fe metal from Iron (III) oxide is as follows: Fe2O3(s) + 3CO(g) 2Fe(s) + 3CO2(g) H = ? Use the equations below to calculate Ho fo…
1a)A 0.003525-mol sample of an organic compound was burned in oxygen in a bomb c
1a)A 0.003525-mol sample of an organic compound was burned in oxygen in a bomb calorimeter. The temperature of the calorimeter increased from 24.5oC to 26.7oC. If the heat capacit…
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