Chemistry concepts and calculations

What is the change in enthalpy for this process? You are given a closed vessel a

What is the change in enthalpy for this process? You are given a closed vessel at 250 K containing 1 mol of solid species A. The vessel is heated to 40OK K and since no solid or l…

What is the change in enthalpy for this reaction? 2C =O + O=O rightarrow 2O=C=O

What is the change in enthalpy for this reaction? 2C =O + O=O rightarrow 2O=C=O (A) -1039 kJ (B) -561 kJ (C) 561 kJ (D) 1039 kJ Using the information below, what is Delta H degree…

What is the change in free energy for the following reaction when we have 2.00 m

What is the change in free energy for the following reaction when we have 2.00 mol Fe2O3, 1.5 mol FeO, 0.35 mol Fe, and the partial pressure of O2 is 200.0 atm in a sealed 1.00 L …

What is the change in internal energy (Delta E) when a system is heated with 35

What is the change in internal energy (Delta E) when a system is heated with 35 J of energy while it does 15 J of work? +50 J -20 J +20 J +35 K -50 J Heat is best defined as a sub…

What is the charge on a hypothetical ion with 65 protons and 68 electrons What i

What is the charge on a hypothetical ion with 65 protons and 68 electrons What is the charge on a hypothetical ion with 65 protons and 68 electrons What is the charge on a hypothe…

What is the charge on a hypothetical ion with 65 protons and 68 electrons What i

What is the charge on a hypothetical ion with 65 protons and 68 electrons What is the charge on a hypothetical ion with 65 protons and 68 electrons What is the charge on a hypothe…

What is the charge on the transition metal in each compound or ion? a. [Cr(NHs)

What is the charge on the transition metal in each compound or ion? a. [Cr(NHs) (en)l b. [Fe(CN). c. Na [Ni(CN)l d. [Mn(CO)s] 2. For the transition metals in the question above, w…

What is the chemical basis of enzyme catalysis? What is the Michaelis-Menten equ

What is the chemical basis of enzyme catalysis? What is the Michaelis-Menten equation and its Lineweaver-Burk form? How does the Michaelis-Menten equation explain why the rate of …

What is the chemical composition of the anhydrous indicating material in Indicat

What is the chemical composition of the anhydrous indicating material in Indicating Drierite? b. c. What is the chemical composition of the partially spent indicating material in …

What is the chemical equation for the reaction that represents breaking all the

What is the chemical equation for the reaction that represents breaking all the bonds in gaseous benzene, ?

What is the chemical equation for the reaction that represents breaking all the

What is the chemical equation for the reaction that represents breaking all the bonds in gaseous benzene, ?

What is the chemical formula (with charge) of the phosphate ion ? A white powder

What is the chemical formula (with charge) of the phosphate ion ? A white powder is 50.2% chloride ion by mass. Use dimensional analysis to determine how many grams of this powder…

What is the chemical formula for the perchlorate ion? ClO_2^- ClO_3^- ClO_4^- Cl

What is the chemical formula for the perchlorate ion? ClO_2^- ClO_3^- ClO_4^- ClO^- What is the mass of silver chlorate (191.32 g/mol) that decomposes to release 0.466L of oxygen …

What is the chemical name and structure of Lipitor? What enzyme does Lipitor inh

What is the chemical name and structure of Lipitor? What enzyme does Lipitor inhibit? What is the reaction catalyzed by the enzyme that Lipitor inhibits (show the reaction includi…

What is the chloride ion concentration, [CT], in a solution made by adding 20.0

What is the chloride ion concentration, [CT], in a solution made by adding 20.0 ml of water to 80.0 ml of a 0.125 M CaCI_2(aq) solution? Write a balanced net ionic equation for th…

What is the classification for: CH 3 CH 2 CH 2 CH 2 COORb from the following lis

What is the classification for: CH3CH2 CH2CH2COORb from the following list? (quite often you will have more than one classification possible for one compound) Strong Acid (SA)    …

What is the classification of the following polymer? A) polyester B) polyamide C

What is the classification of the following polymer? A) polyester B) polyamide C) polyurethane D) polycarbonate E) none of these Which of the following best describes the polymer …

What is the code of this Java program? Please help Write a program which prompts

What is the code of this Java program? Please help Write a program which prompts the user for input using the JOptionPane class. The dialog window prompts the user for their ID. A…

What is the coefficient for H_2O when the following combustion reaction of a fat

What is the coefficient for H_2O when the following combustion reaction of a fatty acid is C_18 H_36O_2 + O_2 rightarrow CO_2 + H_2O 1 18 9 26 27 All of the following are properti…

What is the coefficient of Fe 3+ when the followingequation is correctly balance

What is the coefficient of Fe3+ when the followingequation is correctly balanced? CN- + Fe3+ = CNO- +Fe2+ a)1 b)2 c)3 d)4 I know how to balance an acid redox solution, but have ne…

What is the coefficient of H20 when the following equation is properly balanced

What is the coefficient of H20 when the following equation is properly balanced A)3 B) 4 C) 6 D) 12 E) 24 14. Chloribe gas can be made from the reaction of manganese dioxide with …

What is the coefficient of oxygen after balancing the following equation? ___ P

What is the coefficient of oxygen after balancing the following equation? ___ P (s) ___ O_2 (g) rightarrow ___ P_2 O_5 (s) 1 2 4 5 none of these What is the coefficient of hydroge…

What is the common ion in a solution prepared by mixing 0.01 M NaCH_3CO_2 with 0

What is the common ion in a solution prepared by mixing 0.01 M NaCH_3CO_2 with 0.01 M CH_3CO_2H? CH_3CO_2^- OH^- H_3O^+ Na^+ Which statement about buffers is true? Buffers resist …

What is the common log of 82.5 to 3 significant figures? What is the antilog of

What is the common log of 82.5 to 3 significant figures? What is the antilog of 3.9 to 3 significant figures? The concentration C, in pounds per minute, of one of the components i…

What is the common name of 4-chlorophenol? A. ortho-clorophenol B. para-chloroph

What is the common name of 4-chlorophenol? A. ortho-clorophenol B. para-chlorophenol C. meta-chlorophenol D. 4-phenylchloride What is the common name of 4-chlorophenol? A. ortho-c…

What is the common name of the compound shown? a. isopropylamine b. sec-butylami

What is the common name of the compound shown? a. isopropylamine b. sec-butylamine c. 2-methyl-1-propanamine d. isobutylamine What is the correct assignment of the names of the ar…

What is the common name of the following compound? N-methylethanamine N,N-. diam

What is the common name of the following compound? N-methylethanamine N,N-. diamethylethanamine Diethylaminoethane Triethylamine N, N-diethylethnamine Which of the following is no…

What is the complementary strand for the DNA sequences 5\' - CAATTG-3\'? 5\' - G

What is the complementary strand for the DNA sequences 5' - CAATTG-3'? 5' - GTTAAC - 3' 5' - GUUAAC - 3' 5' - CCTACC - 3' 5 - CAATTG - 3' 5' - CAGGAT - 3' Converting glusose-6-pho…

What is the complete IUPAC name for Compound B? In what way, if any, do the phys

What is the complete IUPAC name for Compound B? In what way, if any, do the physical properties (melting point, boiling point, solubility, etc.) of Compounds B and C differ? Can y…

What is the complete ionic equation and the net ionic equations for the reaction

What is the complete ionic equation and the net ionic equations for the reaction of Ca(No3)2 and Na2SO4? which are the spectator ions?

What is the complete ionic equation and the net ionic equations for the reaction

What is the complete ionic equation and the net ionic equations for the reaction of Ca(No3)2 and Na2SO4? which are the spectator ions?

What is the complete net ionic equation for the following: A)lithium sulfate and

What is the complete net ionic equation for the following: A)lithium sulfate and strontium chloride B)potassium bromide and calcium sulfide C)chromium(III) nitrate and potassium p…

What is the complete net ionic equation for the following: A)lithium sulfate and

What is the complete net ionic equation for the following: A)lithium sulfate and strontium chloride B)potassium bromide and calcium sulfide C)chromium(III) nitrate and potassium p…

What is the complimentary DNA sequence to the strand below? C-G-G-T-T-A-G G-C-C-

What is the complimentary DNA sequence to the strand below? C-G-G-T-T-A-G G-C-C-A-A-T-C C-G-G-T-T-A-G A-T-T-G-G-C-T G-C-C-U-U-U-C The 3'-end of a tRNA molecule: contains the antic…

What is the composition of the vapor in equilibrium with a liquid mixture of 60.

What is the composition of the vapor in equilibrium with a liquid mixture of 60.6 mol% propane and the remainder n-butane at 80 F? Assume the vapor pressures and heats of vaporiza…

What is the concentration (M) of sodium ion in a solution made by mixing 100. mL

What is the concentration (M) of sodium ion in a solution made by mixing 100. mL of 0.100 M sodium sulfate, 100. mL of 0.50 sodium chloride, and 200. mL of 0.0250 M sodium phospha…

What is the concentration (in M) of the chloride on when 19.2 mL of a 0.664 M so

What is the concentration (in M) of the chloride on when 19.2 mL of a 0.664 M solution of barium chloride is combined with 18.9 mL of a 0.68 M solution of aluminum chloride? Assum…

What is the concentration (in Molarity) of ions in solution when 2.13 g of Na_2S

What is the concentration (in Molarity) of ions in solution when 2.13 g of Na_2SO_4 is dissolved in enough water to produce 100.0 mL of solution? 0.150 M 0.300 M 0.450 M 0.600 M I…

What is the concentration in ppm assuming that 2 quarts of dichlorobenzene has s

What is the concentration in ppm assuming that 2 quarts of dichlorobenzene has spilled and evaporated in an unventilated area measuring 4 meters x 6 meters x 13 meters? Your compa…

What is the concentration of 10 nm particles that move through air only by diffu

What is the concentration of 10 nm particles that move through air only by diffusion at a distance of 10 m if the initial particle concentration at the point of generation are 100…

What is the concentration of Ag+(aq) ion in 1.00L of solution that is 0.010 M Ag

What is the concentration of Ag+(aq) ion in 1.00L of solution that is 0.010 M AgNO3 and 1.00 M NH3? The Kf for Ag(NH3)2+ is 1.7x10^-7.

What is the concentration of C_2O^2-_4 in a 0.100 M solution of oxalic acid (C_2

What is the concentration of C_2O^2-_4 in a 0.100 M solution of oxalic acid (C_2O_4H_2) in water ? C_2O_4H_2 Equilibrium C_2O_4H^- K_a1 = 5.37 times 10^-2 C_2O_4H^- Equilibrium C_…

What is the concentration of F 2 over a bath of molten cryolite at this temperat

What is the concentration of F2 over a bath of molten cryolite at this temperature? Aluminum is one of the most versatile metals. It is produced by the Hall-Heroult process, in wh…

What is the concentration of FeNCS2+ in solution 1? Solutions 2, 3, 4, 5, 6,? CI

What is the concentration of FeNCS2+ in solution 1? Solutions 2, 3, 4, 5, 6,? CIl le cuvette into the spectrophotometer; set the wavelength to 447 nm, and adjust the light control…

What is the concentration of FeNCS2+ in solution 1? Solutions 2, 3, 4, 5, 6,? CI

What is the concentration of FeNCS2+ in solution 1? Solutions 2, 3, 4, 5, 6,? CIl le cuvette into the spectrophotometer; set the wavelength to 447 nm, and adjust the light control…

What is the concentration of K+ in 0.15 M of K2S? If CaCl2 is dissolved in water

What is the concentration of K+ in 0.15 M of K2S? If CaCl2 is dissolved in water, what can be said about the concentration of the Ca2+ ion? It has the same concentration as the Cl…

What is the concentration of [Cl?] in a solution of 10 mL of 12 M HCl when 6 mL

What is the concentration of [Cl?] in a solution of 10 mL of 12 M HCl when 6 mL of water is added?

What is the concentration of [Cl?] in a solution of 10 mL of 12 M HCl when 6 mL

What is the concentration of [Cl?] in a solution of 10 mL of 12 M HCl when 6 mL of water is added?

What is the concentration of [H+] in a 0.050 M solution of acetic acid? The Ka v

What is the concentration of [H+] in a 0.050 M solution of acetic acid? The Ka value for acetic acid is 1.8 Times 10 -5 . What is the solubility of barium sulfate in a solution co…

What is the concentration of [H^+] in molars, millimolars, and micro-molars for

What is the concentration of [H^+] in molars, millimolars, and micro-molars for a solution of pH 5? If you mix 10mL of a 0.1 M HCI solution with 8mL of a 0.2 M NaOH solution, what…