Chemistry concepts and calculations

1) with regards to the following reaction determine the oxidation states of all

1) with regards to the following reaction determine the oxidation states of all components. Cd(s)+Ag+(aq) --> Ag(s) + Cd2+(aq). then circle the oxidation agent , put a box arou…

1) write electron configurations for the following atoms on ions: a) Bi b) Se² c

1) write electron configurations for the following atoms on ions: a) Bi b) Se² c) Pt d) Ba² 2.) One of the visible lines in the hydrogen emission spectrum corresponds to the  n=6 …

1) write the expressions for the rate law, inserting the proper exponents (x and

1) write the expressions for the rate law, inserting the proper exponents (x and y) for the concentrations of H2O2 and I- 2)Are the exponents x and y intergers or fractions? 3) Ev…

1) write the net ionic equations to show how the carbon dioxide/bicarbonate buff

1) write the net ionic equations to show how the carbon dioxide/bicarbonate buffer neutralized acid and base 2) Did the carbonate buffer lose any gas while HCL was added? If so, w…

1)))The compound potassium sulfate is a strong electrolyte. Write the transforma

1)))The compound potassium sulfate is a strong electrolyte. Write the transformation that occurs when solid potassium sulfate dissolves in water. Use the pull-down boxes to specif…

1)))The compound potassium sulfate is a strong electrolyte. Write the transforma

1)))The compound potassium sulfate is a strong electrolyte. Write the transformation that occurs when solid potassium sulfate dissolves in water. Use the pull-down boxes to specif…

1)))The compound potassium sulfate is a strong electrolyte. Write the transforma

1)))The compound potassium sulfate is a strong electrolyte. Write the transformation that occurs when solid potassium sulfate dissolves in water. Use the pull-down boxes to specif…

1)))The compound potassium sulfate is a strong electrolyte. Write the transforma

1)))The compound potassium sulfate is a strong electrolyte. Write the transformation that occurs when solid potassium sulfate dissolves in water. Use the pull-down boxes to specif…

1)))Write a balanced equation for the double-replacement precipitation reaction

1)))Write a balanced equation for the double-replacement precipitation reaction described, using the smallest possible integer coefficients. A precipitate forms when aqueous solut…

1)))Write a balanced equation for the double-replacement precipitation reaction

1)))Write a balanced equation for the double-replacement precipitation reaction described, using the smallest possible integer coefficients. A precipitate forms when aqueous solut…

1))According to the following reaction, how many grams of hydrogen gas are neces

1))According to the following reaction, how many grams of hydrogen gas are necessary to form 0.475 moles nitrogen gas? nitrogen monoxide (g) + hydrogen (g) nitrogen (g) + water (l…

1))According to the following reaction, how many grams of hydrogen gas are neces

1))According to the following reaction, how many grams of hydrogen gas are necessary to form 0.475 moles nitrogen gas? nitrogen monoxide (g) + hydrogen (g) nitrogen (g) + water (l…

1))According to the following reaction, how many grams of water are needed to fo

1))According to the following reaction, how many grams of water are needed to form 27.6 grams of oxygen gas? water (l) hydrogen (g) + oxygen (g) 2))According to the following reac…

1))According to the following reaction, how many grams of water are needed to fo

1))According to the following reaction, how many grams of water are needed to form 27.6 grams of oxygen gas? water (l) hydrogen (g) + oxygen (g) 2))According to the following reac…

1))At equilibrium, ________. CH 4 (g) + 2 H 2 O (g) CO 2 (g) + 4 H 2 (g) 3)) the

1))At equilibrium, ________. CH4 (g) +  2 H2O(g)   CO2(g) + 4 H2 (g) 3)) the rates of the forward and reverse reactions are equal the value of the equilibrium constant is 1 all ch…

1))At equilibrium, ________. CH 4 (g) + 2 H 2 O (g) CO 2 (g) + 4 H 2 (g) 3)) the

1))At equilibrium, ________. CH4 (g) +  2 H2O(g)   CO2(g) + 4 H2 (g) 3)) the rates of the forward and reverse reactions are equal the value of the equilibrium constant is 1 all ch…

1))the following reaction, 4.27 grams of hydrogen gas are mixed with excess ethy

1))the following reaction, 4.27 grams of hydrogen gas are mixed with excess ethylene (C2H4). The reaction yields 58.4 grams of ethane (C2H6). hydrogen (g) + ethylene (C2H4) (g) et…

1))the following reaction, 4.27 grams of hydrogen gas are mixed with excess ethy

1))the following reaction, 4.27 grams of hydrogen gas are mixed with excess ethylene (C2H4). The reaction yields 58.4 grams of ethane (C2H6). hydrogen (g) + ethylene (C2H4) (g) et…

1)- What volume of O2 would be required to react with excess SO2 at STP to produ

1)- What volume of O2 would be required to react with excess SO2 at STP to produce 0.500 moles of SO3? 2SO2(g) + O2(g) 2SO3(g) A) 22.4 L B) 33.6 L C) 11.2 L D) 44.8 L E) 5.60 L sh…

1). A 1.000-mL aliquot of a solution containing Cu2 and Ni2 is treated with 25.0

1).A 1.000-mL aliquot of a solution containing Cu2 and Ni2 is treated with 25.00 mL of a 0.04023 M EDTA solution. The solution is then back titrated with 0.02121 M Zn2 solution at…

1). A 5.00 g sample of (2S,3S)-2-chloro-3-methylpentane was diluted to 20.0 mL,

1). A 5.00 g sample of (2S,3S)-2-chloro-3-methylpentane was diluted to 20.0 mL, and a portion of this solution was placed in a 20.0 cm polarimeter cell. If the observed optical ro…

1). A 55.5 g sample of water at 99.8C is placed in a constant pressure calorimet

1). A 55.5 g sample of water at 99.8C is placed in a constant pressure calorimeter. Then, 23.3 g of zinc metal at 21.2??C is added to the water and the temperature drops to 96.4??…

1). Acetylene is the substance burned in oxy-acetylene torches. Write a balanced

1). Acetylene is the substance burned in oxy-acetylene torches. Write a balanced equation for the complete oxidation reaction that occurs when acetylene (C2H2) burns in air. Use t…

1). Areaction with 5.00 grams of NH3 and excess O2 and is allowed to react, howe

1). Areaction with 5.00 grams of NH3 and excess O2 and is allowed to react, however, not all of the NH3 is used up. The actual yield of the NO product produced only 4.50g. Given t…

1). Consider a 0.4 M solution of anilinium chloride. The ion anilinium is the co

1). Consider a 0.4 M solution of   anilinium chloride. The ion   anilinium is the conjugate acid of the the weak base aniline.The pKb   of aniline is 9.13   Part a).   Calculate  …

1). For the following reaction if we react .1037 g NH 3 with .2297 g Cl 2 , what

1). For the following reaction if we react .1037 g NH3 with .2297 g Cl2, what is the limiting reactant? 4  NH3  +  3 Cl2  à3  NH4Cl  +    NCl3 2). For the following reaction if we…

1). The following reaction occurs in basic solution. Identify the oxidizing agen

1). The following reaction occurs in basic solution. Identify the oxidizing agent. (Note: The equation is not balanced.) Zn(s) + NO3-(aq) ® Zn(OH)42-(aq) + NH3(aq) OH-(aq) NO3-(aq…

1). The reaction N 2 ( g ) + 3 H 2 ( g ) 2 NH 3 ( g ) has a K p value of 1.5×10

1). The reaction N2(g) + 3 H2(g) 2 NH3(g) has a Kp value of 1.5×10–5. What is the Kc for this reaction at 500. °C? 7.3×101 9.0×109 6.0×102 4.0×109 2.5×102 2). The following equili…

1). Two 20.0 mL samples, one 0.200 MKOH and the other 0.200 M CH3NH2, were titra

1). Two 20.0 mL samples, one 0.200 MKOH and the other 0.200 M CH3NH2, were titrated with 0.100 MHI. Answer each of the following questions regarding these two titrations. a). What…

1). What IR absorption would you use to distinguish between the two compounds ab

1). What IR absorption would you use to distinguish between the two compounds above? cm-1 2). Enter a frequency, or range as lower freq-higher freq, from the table above. 3). Whic…

1). What are the mole fractions of H3PO4 and water in a solution of 12.3 g of H3

1). What are the mole fractions of H3PO4 and water in a solution of 12.3 g of H3PO4 in 138 g of water? a). mole fraction of H3PO4 b). mole fraction of water 2). The Henry's law co…

1). Which subatomic particles are found in the nucleus of the atom? Enter the su

1). Which subatomic particles are found in the nucleus of the atom? Enter the subatomic particle or particles separated by commas. 2). The atomic number of oxygen is 8. What is th…

1). Write a balanced equation for the double-replacement precipitation reaction

1). Write a balanced equation for the double-replacement precipitation reaction described, using the smallest possible integer coefficients. A precipitate forms when aqueous solut…

1). Write a balanced equation for the single-replacement oxidation-reduction rea

1). Write a balanced equation for the single-replacement oxidation-reduction reaction described, using the smallest possible integer coefficients. The reaction that takes place wh…

1).An aluminium oxalate complex was prepared by dissolving aluminium metal in po

1).An aluminium oxalate complex was prepared by dissolving aluminium metal in potassium hydroxide, followed by reaction with oxalic acid.The resulting complex was analysed for oxa…

1).Balance the following redox reactions: a) H2S + HNO3àS + NO (acidic solution)

1).Balance the following redox reactions: a) H2S + HNO3àS + NO (acidic solution) b) MnO4^- + I^- àMnO2+ IO3^–(basic solution) 2). Calculate E °cell for the following redox reactio…

1).In the resolution of racemic 1-phenylthylamine that you carried out, where is

1).In the resolution of racemic 1-phenylthylamine that you carried out, where is the (R)-(+)-1-phenylethylamine? How would you isolate it (recover the pure oil)? 2. If the ml of r…

1)15 grams of reactant A is needed to produce 180 grams of product B. If only 12

1)15 grams of reactant A is needed to produce 180 grams of product B. If only 12 grams of product B is desired, how many grams of A is needed in this reaction? Question 1 options:…

1):Which of the following salts should be soluble in water? (Mark all that apply

1):Which of the following salts should be soluble in water? (Mark all that apply) A) iron (II) chloride                 B) potassium sulfate     C) barium phosphate               …

1)A 13.1 mL volume of 0.107 M NaOH solution reaches the stoichiometric point in

1)A 13.1 mL volume of 0.107 M NaOH solution reaches the stoichiometric point in the titration of a 25.0 mL aliquot of nitrous acid, HNO2. What is the molar concentration of the HN…

1)A 55.67 g sample of a substance is initially at 22.7 °C. After absorbing 2847

1)A 55.67 g sample of a substance is initially at 22.7 °C. After absorbing 2847 J of heat, the temperature of the substance is 132.2 °C. What is the specific heat (c) of the subst…

1)A calorimeter contains 24.0 Solution q = Cs x m x dT = -(4.18J/gC)(24.0g+1.6g)

1)A calorimeter contains 24.0

1)A chemist wants to make 6.0 L of a 0.390 M CaCl2solution. What mass of CaCl2 (

1)A chemist wants to make 6.0 L of a 0.390 M CaCl2solution. What mass of CaCl2 (in g) should the chemist use? 2)To what volume should you dilute 30 mL of a 11.0 M H2SO4 solution t…

1)A compound with the formula C 6 N 2 H 7 ClO 2 was treated with hydrogen gas ov

1)A compound with the formula C6N2H7ClO2was treated with hydrogen gas over a Raney nickel catalyst and a new material, C6N2H13ClO2, was formed. How many pi bonds and/or rings did …

1)A hot piece of zag (Ce(Ag)=0.23J/g C) of unknown mass at 500c is dropped on a

1)A hot piece of zag (Ce(Ag)=0.23J/g C) of unknown mass at 500c is dropped on a cold 25C contained with 100g of water (Ce(H2O)=4.184J/gC ).Calculate the mass of the silver piece i…

1)A linear polystyrene has a number-average molecular weight of 400000 g/mol; co

1)A linear polystyrene has a number-average molecular weight of 400000 g/mol; compute average values of L and r for this material? What is the degree of polymerization of this pol…

1)A linear polystyrene has a number-average molecular weight of 400000 g/mol; co

1)A linear polystyrene has a number-average molecular weight of 400000 g/mol; compute average values of L and r for this material? What is the degree of polymerization of this pol…

1)A mixture consists of two solids: one of the solids willsublime easily but its

1)A mixture consists of two solids: one of the solids willsublime easily but its vapor is harmful. How would you seperatethis mixture? Explain. 2)Explain what would happen to your…

1)A set of three nucleophilic displacement reactions is shown below: Part A) Whi

1)A set of three nucleophilic displacement reactions is shown below: Part A) Which reaction (A, B, or C) proceeds the fastest?__ Part B) Which reaction (A, B, or C) proceeds the s…

1)A slightly bruised apple will rot extensively in about four days at room tempe

1)A slightly bruised apple will rot extensively in about four days at room temperature (25oC). If it is kept in a refrigerator at 4oC, the same extent of rotting takes about fifte…