Q: Be sure to answer all parts. Use the table to calculate AG for the following reactions at 25°C. Spec...
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Q: Determine how many grams of each of the following solutes would be needed to make 2.50 x 102 mL of a...
A: Molarity = moles ÷ volume (L) Mole = molarity × volume (L) Mass = mole × molar mass
Q: Select all reactions where Kp is equal to Kc. PCl3(g) + Cl2(g) ⇌ PCl5(g) 2 SO3(g) ⇌ 2 SO2(g) + O2(...
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Q: Question 22 What is/are the challenge(s) of imaging pancreatic beta cells? O the poor spatial resolu...
A: A multiple choice question based on general chemistry that is to be accomplished.
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A: Given data: Percentage of KHP: 30.97 %, 35.99 %, 36.54 %, 37.22 %
Q: Consider the problem below: (Equation 1) 4 AICI3 (5) + 2 Al(s) + 3 Cl2(g) - 3 Al,Cla(g) AH = -1051 k...
A: 6Al(s) + 9Cl2(g) ---> 3Al2Cl6(g)
Q: How much heat is required to raise the temperature of 15 x 10g of water from 45F to 130F? The specif...
A: Answer: This question is based on the following formula: Q=mS∆There:Q=heat exchangedm=mass of the wa...
Q: A eudiometer tube (ET) is found to have a conversion factor "f" of 0.89 mL/ET unit. The experimental...
A: The conversion factor for the Eudiometer tube ; = 0.89 ml/ET The reading on Eudiometer tube = 37.10 ...
Q: Which of the following processes is exothermic, given the folowing N2ig) +202lg) - N2040) AH"=9.67 k...
A: An exothermic reaction is tha t reaction in which heat is released.
Q: Place an asterisk by each stereocenter in the molecules depicted below. Note that if this were an ex...
A: Stereocentre is the particular carbon centre in which groups are attached that orient in different d...
Q: Zinc metal reacts with HCI according to the following balanced equation: Zn(s) + 2HCI(aq) --> ZnCl2(...
A: Given : volume = 47.0 ml density = 1.03 g / ml specific heat = 4.184J /g°c temperature change of sol...
Q: Calculate the pH of the buffer system made up of 0.17 M NH3/0.47 M NH,CI.
A: Given : buffer solution of 0.17 M NH3 and 0.47 M NH4Cl To calcxulate :- pH of given buffer.
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Q: Be sure to answer all parts. Industrially, vanadium metal, which is used in steel alloys, can be obt...
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Q: Select Draw Rings More Erase H CH;CH2OK CH;CH,OH heat Br
A: This is the concept of Organic chemistry
Q: Click in the answer box to activate the palette. Determine the empirical formula of a compound costa...
A: Given Mass of Silicon: 7.86g Mass of chlorine: 39.7g Molar mass of Silicon: 28g Molar mass of chlo...
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A: Given data is as follows: The pOH of solution = 8 The concentration of HCN = 0.2 F The Ka of HCN = 4...
Q: Pentaborane BgHgls) burns vigorously in O2 to give B203s) and H2O0. Calculate AHren for the combusti...
A: Moles of B5H9 = 5 mole
Q: Provide methods for synthesizing the following compounds. In each case, ethylmagnesium bromide must ...
A: Detail mechanism for every conversion is shown below
Q: Gaseous ethane (CH,CH,) will react with gaseous oxygen (0,) to produce gaseous carbon dioxide (CO,) ...
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Q: Caleulate the molar mass of a compound if0 J66 mole of it has a ma of 4150 mol
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Q: D-glucose, blood sugar, exists in two forms; ring open and ring closed. Don't worry about the chemis...
A: According to CIP rule , with increasing in atomic number priority of the group also increases. Numb...
Q: A 27.0-mL solution of 0.120 M CH3COOH is titrated with a 0.230 M KOH solution. Calculate the pH afte...
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Q: alculate the mass of excess reagent remaining at the end of the reaction in which 90.0 g of SO2 are ...
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Q: Which gas has the slowest rate of diffusion? A H; B NH, C CH D CO2 A O B C D
A: Concept is based on Ghrams law:
Q: Clikk in the ansner box to activate the palette. Determine the ompirical formula of a compound havin...
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Q: 1.How many grams of disodium EDTA is needed to prepare a 350mL solution? 2.What is the molecular w...
A: Titration is a method used to check molarity of compound
Q: A sulfuric acid (H2SO4 d=1.83g/mL) aqueous solution having 5.8321 Molar Concentration with a density...
A: The mole of solute present in a one-liter solution is known as the molarity of the solution. The mol...
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Q: What is the structures of the compounds with the NMR data below? 1. C9H1204S
A: The given compound is: C9H12O4S
Q: Heating copper(II) oxide at 400°C does not produce any appreciable amount of Cu: CuO(s)5 Cu(s) + -0,...
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Q: Predict the pH (>7,7 7
A: a) KBr is a salt of strong base and strong acid.
Q: 1.How many grams of disodium EDTA is needed to prepare a 350mL solution? 2.What is the molecular w...
A: Experiment is about EDTA.
Q: Select the single best auswer. Which of the following has more atoms: 4.08 g of hydrogen atoms or 18...
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Q: BH
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Q: At elevated temperatures, ammonium iodide decomposes according to NH4I(s) ⇌ NH3(g) + HI(g) (a) If ...
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Q: 3. The Seliwanoff Test tests for ketoses by forming hydroxymethyl furfural (shown below) when heated...
A: The hydroxy groups at position- 2,3 and 4 are involved in dehydration reaction necessary to convert ...
Q: Chlorine dioxide (CIO,) is a disinfectant used to treat municipal wastewater. When dissolved in alka...
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Q: Formula Electron group Molecular Bond Polarity (or ion) Lewis structure AXE Notation geometry geomet...
A: Molecular structures: As per our guideline we have to answer first three questions only.
Q: Which of the following shows the correct chemical equation for the ionization of HBRO? HBrO(aq) + H2...
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Q: Be sure to answer all parts. Heating copper(II) oxide at 400°C does not produce any appreciable amou...
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Q: - Encircle the functional grou ps in the following compounds, label each with Hhe letters in dicated...
A: We will encircle functional group one by one and then classify them.
Q: In an experiment, it is found that 0.00124 mg of hexachlorobenzene (CeCla) can be dissolved in 200 m...
A: Solubility :- The number of moles of solute dissolved in a specified amount of solvent is defined a...
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Q: De sure to amer all parts Ue the table to caleulate AG for the following reactions at 28°C. Species ...
A: The ∆Grxn° for general reaction can be calculated as; aA + bB → cC + dD ∆Grxn° = c∆Gf° fo...
Q: 6. Using the phase diagram in Question 5, determine the kilograms of beryllium that must be added to...
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Q: Answer the following questions about the Lewis structure for the organic molecule CH3CH2CH2CN (see e...
A: Here the organic molecule is CH3CH2CH2CN
Q: What is the theoretical yield of chromium that can be produced by the reaction of 40.0 g of Cr2O3 wi...
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Q: chemist adds 455.0 ml. of a 3.4M silver nitrate (AGNO, solution to a reaction flask. Calculate the m...
A: Molarity is defined as number of moles of solute divide by volume of solution
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- Indicate the normalized integration value for the hydrogen shown in bold. H H NO₂ H CI Ο 1Η O2H 3H 4H 5H O 6H HCalculate the 95% confidence interval for each set of data in Problem 2 if s is a good estimate of σ and has a value of *set A, 0.015; set B, 0.30 ; *set C, 0.070 ; set D, 0.20 ; *set E, 0.0090; and set F, 0.15.B–3. An important continuous distribution is the exponential distribution p(x)dx = ce 0 a.
- Question: Using a method for the determination of % CaO in limestone the following results were obtained for a NIST Certified Reference Sample (CRM): % Cao 50.38, 50.20, 50.31, 50.22 50.41 Five samples were obtained from a railcar of limestone. The analysis of the samples gave the following results: % CaO 55.01, 59.61, 58.82, 64.39, 62.49 a) Determine the variance due to sampling. b) If the samples taken from the railcar had a mass of 0.500 g, what massThe measurements were recorded and then repeated six times for two different methods, each giving: average of 42 (s = 0.3), and average of 45 (s = 0.2), respectively. Do these methods yield results that are significantly different?Why is it necessary for users to understand the principles behind statistical calculations in chemistry?
- What is the value of the Born exponent for Fr+?In the technique of high performance liquid chromatography (HPLC) the peak area response for a particular analyte is directly proportional to concentration Analgesic tablets typically consist of aspirin and caffeine as the active ingredients, the remainder made up of inert binding material. The concentrations of aspirin and caffeine may be routinely monitored using HPLC, whereby the peak areas obtained from a solution of the tablet are compared with those obtained from standard solutions of the analytes. In an analysis to determine the concentration of caffeine in such a tablet, the following data were recorded: Solutions Analysed: Tablet Sample: Mass of tablet (dissolved in 250 cm methano): 0.523 g Caffeine Standard: Mass of caffeine (diessolved in 500 cm methanol) 0.105 g HPLC results: Solution Peak Area (catfeine) 1. Tablet Sample 325 2. Caffeine Std. 865 The concentration of caffeine in the tablet (expressed as a mass (w/wl percentage) was Oa 1.89 Ob 13.4 O 3.77 Od. 267 Oe 7.54 You…In a survey of 1000 large corporations, 250 said that, given a choice between a job candidate who smokes and an equally qualified nonsmoker, the nonsmoker would get the job (USA Today).(a) Let p represent the proportion of all corporations preferring a nonsmoking candidate. Find a point estimate for p.(b) Find a 0.95 confidence interval for p.(c) As a news writer, how would you report the survey results regarding the proportion of corporations that hire the equally qualified nonsmoker? What is the margin of error based on a 95% confidence interval?
