Q: The decomposition of N2O5 to NO2 and O2 is first order, with a rate constant of 4.80 x 10-4/s at 45°...
A: Calculate final concentration and time....
Q: Nitrogen dioxide is one of the many oxides of nitrogen (often collectively called "NOx") that are of...
A:
Q: Give the IUPAC name of the following structures.
A:
Q: how all work in your notebook, including dimensional c Combination/s 30z → 2 Fe2O3 a) How many moles...
A:
Q: Reaction of 2-butanone with CH3MBBR/ether followed by H3O* gives a, 4° alcohol O 1° alcohol O 3° alc...
A:
Q: Calculate the number of moles for salicylic acid and acetic anhydride using the data provided below....
A: Given mass of salicylic acid = 2.0 gram Molar mass of salicylic acid = 138.12 g/mol Volume of acetic...
Q: The compound potassium cyanide is a strong electrolyte. Write the reaction when solid potassium cyan...
A: When strong electrolyte is added to water , it breaks into its corresponding ions . equation is give...
Q: 5.53 The vapor pressure of and its molar enthalpy of vap 10.5 kcal/mol. Assume the effect of a press...
A:
Q: Calculate the mass of Kr in a 8.57 L cylinder at 96.6 °C and 4.48 bar. mass: g
A:
Q: Crystal: Calcium oxalate or calcium phosphate in kidney stones If it is something harmful, what can...
A: Calcium oxalate: An excess amount of oxalate can combine with calcium in the urine and cause kidney ...
Q: What weight of KCN is equivalent to 30.00 mL of AGNO3 solution containing 15.00 g/liter (a) by the V...
A: In the given problem, the amount of KCN that will be equivalent to 30.00 mL of AgNO3 solution having...
Q: Hydrogen cyanide, HCN, also called hydrocyanic acid is a weak acid with a pKa near 10. What would be...
A:
Q: 1point You got a new lego set on your birthday and you build an air plane. The change in the entropy...
A: 3 1 pont You got a new lego set on your birthday and you build an air plane. The change in the entro...
Q: If a total of 125 mL of a 10% solution is diluted to 500 mL in a 500-mL volumetric flask, what is th...
A: 1.) As the initial 10% solution is diluted , so we would use dilution law to calculate concentration...
Q: Consider the following reaction Clila 3Fale) 2CIF la) If a flask initially contains 3.0 atm of Clle)...
A: Here in this reaction Cl2 gas is in excess . So it will remain with the product after completion of ...
Q: Propose an efficient synthesis for the following transformation: HO (b) The transformation above can...
A: We have to carry out the given transformation. And given the sequence of the required reagents.
Q: Question 8 0. Predict a possible product (if one is possible) for the following Friedel-Crafts Alkyl...
A: Given reaction is intramolecular Fridel craft reaction.
Q: This is the chemical formula for acetic acid (the chemical that gives the sharp taste to vinegar): C...
A: Given values -> Molecular formula = CH3COOH Moles of carbon = 89.1 mole
Q: Gaseous ethane (CH,CH;) reacts with gaseous oxygen gas (02) to produce gaseous carbon dioxide (CO2) ...
A: Reaction between ethane and oxygen (Combustion of ethane) 2C2H6 (g...
Q: Which of these acid definitions does NOT involve hydrogen ion? A) Arrhenius b) Bronsted – Lowry ...
A:
Q: Choose the best efficient synthesis for transformation seen below * I- 1) dilute sulfuric acid; 2)...
A:
Q: Aspirin can be prepared from salicylic acid (C7H6O3), which has a molar mass of 138.12 g/mol, and ac...
A:
Q: (b) Calculate the entropy change when two moles of an ideal gas are allowed to expand from a volume ...
A: Given values-> Number of mole=2 mole V1= 1 L V2=10 L T = 27°C =27+273 = 300K
Q: (c) Explain crystal field splitting in the case of tetrahedral complexes.
A: Crystal field splitting in tetrahedral complexes:
Q: State whether these statements refer to either exothermic or endothermic processes: Combustion of co...
A: Exothermic reaction: The reaction from which energy is released in the form of heat is called as exo...
Q: Decide how the objects in the following table would be listed, if they were listed in order of incre...
A: Please find your solution below : Kinetic energy is the energy of motion. It is a form of energy tha...
Q: What are the generic products of a neutralization reaction?
A: Chemical reaction is the process in which elements or molecules combine with each other chemically a...
Q: Br. HO
A: given
Q: The pKb of ammonia is 4.74. Ksp of Mg(OH)2 is 5.6 x 10-12 If one 100 mL 0.1 M MgCl2 to 100 mL 0.1M...
A: pKb of ammonia = 4.74
Q: You are studying a clear solution and you added the pH indicator methyl violet. The colour range of ...
A: The color of a solution of pH 0.2 is needed to be determined on the addition of an acid-base indicat...
Q: The carbon chlorine bond in chloromethane (CH3Cl) has a bond distance of 178 pm. Assuming a 100% io...
A:
Q: 5. A container containing 30.0 g of propane, C3H8, is burned with 75.0 g of oxygen. a. Outline the s...
A:
Q: Given the reaction: 4 Fe(s) + 302(g) → 2 Fe203(s) A H= -1652 kJ, what is the enthalpy change when 1....
A: for a given reaction, 4 Fe(s) + 3 O2(g) → 2 Fe2O3(s) enthalpy change, Δ H = -1652 KJ
Q: "Synthesis gas" is a mixture of carbon monoxide and water vapor. At high temperature synthesis gas w...
A: Initial moles of CO = 5.8 mol
Q: i) BH3, THF i) H,О,NaOH ? CH3 CH3 -CH3 FHO- он -CH3 HO + + enantiomer enantiomer I II III IV
A:
Q: The amount of iron in ore can be quantitatively determined by titrating a solution of the unknown wi...
A: Given values -> Volume of iron(3) = 25.0ml (V1) Volume of dicromate =18.0ml (V2) Molarity of dicr...
Q: Br2 1) BH3/THF 2) HOOH, NAOH Determine the alkyne that would be required in the following rea to H2S...
A: The double bond acts as a nucleophile (attacks the electrophile). In most cases, the cation produced...
Q: Which product(s) of the oxymercuration-demercuration of 3-methylcyclopentene *
A:
Q: Which of these base definitions requires OH-. A) Arrhenius only b) Arrhenius and Bronsted c) ...
A: There are various concepts of acids and bases :- Arrhenius concept Brønsted-Lowry concept Lewis ...
Q: A sample of N, gas has a volume of 27.0 L at a pressure of 1.50 atm and a temperature of 23 °C. What...
A:
Q: Predict which of these compounds are ionic and which are covalent. (A) Ca3N2 (B) Li2CO3 (C) PCl5 (D)...
A:
Q: 2. Assign the absolute (R or S) configuration to each stereocenter in the molecules depicted below. ...
A:
Q: 2. A gas occupies 900.0 mL at a temper 3. A gas occupies 1.00 L at standard ten
A:
Q: EXERCISE 3.2 Predict the structures of the following ions. Include a description of distortions from...
A: Dear student, since you have asked a question which has multiple subparts according to guidelines we...
Q: . The l value of 6p5 2. The ml value for 6d7 3. The ml value of 4f4 4. Given the following set of...
A: Quantum numbers These are the set of numbers used to describe the position and energy of an electron...
Q: Kindly show complete solutions. Report the final answer in the proper number of significant figures....
A:
Q: Draw the organometallic reagent with all covalent bonds. There are two ways this target molecule cou...
A:
Q: Calculate the pH when 1.13 g of NaClO (FW = 74.44 g/mol) is added to 32.9 mL of 0.50 M HClO. Ignore ...
A: Mass of NaClO = 1.13 g
Q: How much energy (in kJ) is required to heat 11.24 g of Ru(s) from 2310.0 K (its melting point) to 33...
A: Calculate heat in KJ.... Heat required = n × C × dt
Q: How many significant figures in a substance with a mass of 503.45?
A: No. of significant figures in a substance with a mass of 503.45?
Calculate the Qexp of the outlying result in the data set: 8.33, 5.24, 5.74, 5.32, 5.8, 5.66, 5.34, 6.1
Step by step
Solved in 2 steps
- 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 massWhat inference you get when Qc = Kc?Why is it necessary for users to understand the principles behind statistical calculations in chemistry?
- Calculate 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.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…B–3. An important continuous distribution is the exponential distribution p(x)dx = ce 0 a.
- The 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?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?What is the value of the Born exponent for Fr+?