Chemistry concepts and calculations

1. What is product B in the reaction shown below? A) Compound A B) Compound B C)

1. What is product B in the reaction shown below? A) Compound A B) Compound B C) Compound C D) Compound D 2. Which species acts as the nucleophile in the reaction of 1-butene with…

1. What is q 0 ? 2. What is q 6 ? 3. What is q 0 /q 6 ? Acrylonitrile can be for

1. What is q0? 2. What is q6? 3. What is q0/q6? Acrylonitrile can be formed from propylene, ammonia and oxygen in the reaction To produce acrylonitrile stoichiometric ratios of pr…

1. What is the H concentration in a urine sample that has a pH of 4? A) 0.1 B) 0

1. What is the H concentration in a urine sample that has a pH of 4? A) 0.1 B) 0.01 C) 0.001 D) 0.0001 E) None of the above 2. What pairs of atoms in bases are involved in hydroge…

1. What is the Haber Process? Why is it important? (Include Equation). 2. Write

1. What is the Haber Process? Why is it important? (Include Equation). 2. Write balanced equations for the steps in the Ostwald process for making nitric acid from ammonia. 3. Des…

1. What is the Haber Process? Why is it important? (Include Equation). 2. Write

1. What is the Haber Process? Why is it important? (Include Equation). 2. Write balanced equations for the steps in the Ostwald process for making nitric acid from ammonia. 3. Des…

1. What is the Haber process? Why is it important? (Include Eq.) 2. Write balanc

1. What is the Haber process? Why is it important? (Include Eq.) 2. Write balanced equations for the steps in the Ostwald process for making nitric acid from ammonia. 3. Describe …

1. What is the Molarity of an 8.02 m NH 3 solution which has a density of 0.950

1. What is the Molarity of an 8.02 m NH3 solution which has a density of 0.950 g/mL? 2. How many moles of hydrogen peroxide, H2O2 , are present in 25.0 g of a 3% solution? 3. The …

1. What is the PH of 0.350M CsF? 2. What is the PH of 1.50M N 2 H 5 I? 3. Which

1. What is the PH of 0.350M CsF? 2. What is the PH of 1.50M N2H5I? 3. Which of the following WOULD NOT be considered a buffer solution? a. 0.1 M HC2H3O2 mixed with 0.1 M NaC2H3O2 …

1. What is the advantage of using a substrate concentration near the K m in I 50

1. What is the advantage of using a substrate concentration near the Km in I50 determinations? 2. Estimate the I50 from the data below. How did you come to this conclusion? [I] (m…

1. What is the advantage of using a substrate concentration near the K m in I 50

1. What is the advantage of using a substrate concentration near the Km in I50 determinations? 2. Estimate the I50 from the data below. How did you come to this conclusion? [I] (m…

1. What is the advantage of using a substrate concentration near the K m in I 50

1. What is the advantage of using a substrate concentration near the Km in I50 determinations? 2. Estimate the I50 from the data below. How did you come to this conclusion? [I] (m…

1. What is the age (in y) of mummified primate skin that contains 9.49% of the o

1. What is the age (in y) of mummified primate skin that contains 9.49% of the original quantity of 14C? (The half-life of 14C is 5715 years.) _____________ y 2. The integrated fo…

1. What is the angular momentum of a 0.240-kg ball rotating on the end of a thin

1. What is the angular momentum of a 0.240-kg ball rotating on the end of a thin string in a circle of radius 1.35 m at an angular speed of 15.0 rad/s ? 2. A diver can reduce her …

1. What is the answer to these chemistry questions? a. In water, H 2 O, the tota

1. What is the answer to these chemistry questions? a. In water, H2O, the total number of groups on the central atom is ___________. (1, 2, 3, 4)? b. In water the number of bondin…

1. What is the answer to these chemistry questions? a. In water, H 2 O, the tota

1. What is the answer to these chemistry questions? a. In water, H2O, the total number of groups on the central atom is ___________. (1, 2, 3, 4)? b. In water the number of bondin…

1. What is the approximate starting pH value of the strong acid A. Between pH 0

1. What is the approximate starting pH value of the strong acid A. Between pH 0 and pH 1 B. Between pH 1 and pH 2 C. Between pH 2 and pH 3 D. Between pH 3 and pH 4 E. Between pH 4…

1. What is the approximate starting pH value of the weak acid? A. Between 0 and

1. What is the approximate starting pH value of the weak acid? A. Between 0 and 1 B. Between 1 and 2 C. Between 2 and 3 D. Between 3 and 4 E. Between 4 and 5 2. What is the approx…

1. What is the balanced chemical equation for the reaction used to calculate fH

1. What is the balanced chemical equation for the reaction used to calculate fH of CaCO3(s)? 2. For a given reaction, the heat capacity (CP) of the reactants is 50.0 J/mol K and f…

1. What is the balanced equation for main and side reactions? 2. How would I cal

1. What is the balanced equation for main and side reactions? 2. How would I calculate theoretical yield? Haven’t done the experiment yet but I need to know this before class. 61 …

1. What is the balanced equation for main and side reactions? 2. How would I cal

1. What is the balanced equation for main and side reactions? 2. How would I calculate theoretical yield? Haven’t done the experiment yet but I need to know this before class. 61 …

1. What is the best acid-base description of the image? A diprotic acid B. A bin

1. What is the best acid-base description of the image? A diprotic acid B. A binary acid An amphiprotic molecule A Brensted-Lowry base 2. What is the best way to describe the imag…

1. What is the building block of a carbohydrate? _____________ 2. Amino acids ar

1.     What is the building block of a carbohydrate? _____________ 2.     Amino acids are found in which type of macromolecule?____________ 3.     Name 2 molecules that you constr…

1. What is the chemical definition of a buffer solution? Give an example. 2. The

1. What is the chemical definition of a buffer solution? Give an example. 2. The Ka of benzoic acid C7H5O2H, IS 6.5X10^-5. What is the buffer range? 3. How many g of sodum benzoat…

1. What is the chemical reaction that will dissolve the copper? Redox Slachim Cs

1. What is the chemical reaction that will dissolve the copper? Redox Slachim Cs) cg) Both the copper and the zine in the brass unknown will be oxidized. How is the 2. copper sele…

1. What is the chemical reaction that will dissolve the copper? Redox Slachim Cs

1. What is the chemical reaction that will dissolve the copper? Redox Slachim Cs) cg) Both the copper and the zine in the brass unknown will be oxidized. How is the 2. copper sele…

1. What is the color of the iodate-iodide solution being titrated with Na2S2O3 (

1. What is the color of the iodate-iodide solution being titrated with Na2S2O3 (a) before the starch solution is added? (b) after the starch solution is added? (c) at the end poin…

1. What is the concentration (in M) of an aqueous solution of sulfuric acid prep

1. What is the concentration (in M) of an aqueous solution of sulfuric acid prepared by transferring 25.0 mL of 6.00 M H2So4(aq) to a 250 mL-volume volumetric flask that is subseq…

1. What is the concentration of Ba2+ in a saturated baf2 solution (ksp = 1.8 x 1

1. What is the concentration of Ba2+ in a saturated baf2 solution (ksp = 1.8 x 10^-7) if [F-]=0.0032M 2. The Maximum Solubilty of PbI2 is 5.93 mg in 10 mL solution. What is Ksp fo…

1. What is the concentration of Ba2+ in a saturated baf2 solution (ksp = 1.8 x 1

1. What is the concentration of Ba2+ in a saturated baf2 solution (ksp = 1.8 x 10^-7) if [F-]=0.0032M 2. The Maximum Solubilty of PbI2 is 5.93 mg in 10 mL solution. What is Ksp fo…

1. What is the concentration of K+ in 0.15 M of K2S? Express your answer to one

1. What is the concentration of K+ in 0.15 M of K2S? Express your answer to one decimal place and include the appropriate units. 2.A scientist wants to make a solution of tribasic…

1. What is the concentration of the vitamin C standard solution? Using a balance

1. What is the concentration of the vitamin C standard solution? Using a balance, 125mg of Vitamin C was weighed out and was added to a 100-mL beaker and dissolved in 50mL of DI w…

1. What is the concentration of the vitamin C standard solution? Using a balance

1. What is the concentration of the vitamin C standard solution? Using a balance, 125mg of Vitamin C was weighed out and was added to a 100-mL beaker and dissolved in 50mL of DI w…

1. What is the coordination number for each of the following complexes? [Co(NH3)

1. What is the coordination number for each of the following complexes? [Co(NH3)4Cl2]+ [Mg(EDTA)]2? [Zn(H2O)4]2+ Na[Au(CN)2] Enter the coordination numbers, in the order that the …

1. What is the correct number of significant figures in the following calculatio

1. What is the correct number of significant figures in the following calculation? 2. Which of the following ionic isotopes has the same number of neutrons and electrons? a)75Br-1…

1. What is the definition of a “randomly chosen sample” (according to the defini

1.      What is the definition of a “randomly chosen sample” (according to the definition discussed in your text), and what is the goal of randomly choosing a sample? 2.   Explain…

1. What is the density (in g/L) of a sample of nitrogen gas that occupies a volu

1. What is the density (in g/L) of a sample of nitrogen gas that occupies a volume of 5.26L at a pressure of 2.65 atm and a temperature of 29.4oC? 2. The solid chemicals in a spec…

1. What is the density of a gold sample that has a mass of 7.502 g and a volume

1. What is the density of a gold sample that has a mass of 7.502 g and a volume of 0.051 cm? (Hint: 1 cm3= 1 mL) 2. Mercury has a density of 13.534 g mL1. The Department has a 385…

1. What is the density of a gold sample that has a mass of 7.502 g and a volume

1. What is the density of a gold sample that has a mass of 7.502 g and a volume of 0.051 cm? (Hint: 1 cm3= 1 mL) 2. Mercury has a density of 13.534 g mL1. The Department has a 385…

1. What is the difference between a solution and a standard solution? 2. Define

1. What is the difference between a solution and a standard solution? 2. Define the analyte in a titration. 3. What is the primary standard used in this experiment (name and formu…

1. What is the difference between equivalence point and endpoint? 2. In a titrat

1. What is the difference between equivalence point and endpoint? 2. In a titration with a strong acid and a strong base, why used phenolphthalein as the indicator? 3. If the colo…

1. What is the difference between the equilibrium position and the equilibrium c

1. What is the difference between the equilibrium position and the equilibrium constant of a reaction? Which changes as a result of a change in reactant concentration? 2. What i8s…

1. What is the diffraction pattern for a rectangular array of dots where the spa

1. What is the diffraction pattern for a rectangular array of dots where the spacing between dots is smaller along the horizontal axis than along the vertical axis? A. a square ar…

1. What is the driver of ATP synthase in mitochondria? a. H + b. OH - c. H 2 O d

1. What is the driver of ATP synthase in mitochondria? a. H+ b. OH- c. H2O d. CO2 . 2. What is TCA cycle? a. Process that generate NADH b. Process that generate FDAH2 c. Process t…

1. What is the electron donating group in the reaction shown? 2.What is the elec

1. What is the electron donating group in the reaction shown? 2.What is the electrophilic substrate in the reaction shown? 3. Classify the electrophilic substrate (CH3,10,20,30, a…

1. What is the empirical formula of a compound composed of 3.25% hydrogen (H), 1

1. What is the empirical formula of a compound composed of 3.25% hydrogen (H), 19.36% carbon (C), and 77.39% oxygen (O) by mass? 2. A compound with the empirical formula CH2 has a…

1. What is the empirical formula of a compound composed of 3.25% hydrogen (H), 1

1. What is the empirical formula of a compound composed of 3.25% hydrogen (H), 19.36% carbon (C), and 77.39% oxygen (O) by mass? 2. A compound with the empirical formula CH2 has a…

1. What is the expected product when a UV light is shined on a mixture of toluen

1. What is the expected product when a UV light is shined on a mixture of toluene and bromine? 2. Which of the following is classified as a conjugated diene?   a) 1,2-octadiene b)…

1. What is the final pressure of 448 mm Hg of argon gas at 72.1°C if the gas is

1. What is the final pressure of 448 mm Hg of argon gas at 72.1°C if the gas is heated to 202.7°C? Assume the volume and the amount of gas are held constant. 2. N2(g) + H2(g) --&g…

1. What is the final volume in milliliters when 0.600 L of a 36.4 % (m/v) soluti

1. What is the final volume in milliliters when 0.600L of a 36.4% (m/v) solution is diluted to 21.4% (m/v)? Express your answer numerically in milliliters. 2. A 695 mL NaCl soluti…

1. What is the first law of thermodynamics? a) Heat cannot be converted to work

1. What is the first law of thermodynamics? a) Heat cannot be converted to work b) Matter and energy cannot be created nor destroyed. c) The entropy exceeds the enthalpy for every…