Q: How much 5.50M NAOH must be added to 450.0 ml of a buffer that is 0.0180 M acetic acid and 0.0250 M…
A: Given CH3COOH(aq)+OH-(aq)→CH3COO-(aq)+H2O(l) We know that pKa= 4.75 pH=5.75 For the 0.0265M sodium…
Q: LL The vapor pressure of Substance X is measured at several temperatures: temperature vapor pressure…
A: we need to calculate the enthalpy of vaporization of X using the given data
Q: A sample of helium Has a volume of 3.20x102 mL STP. What will be it's new volume if the temperature…
A: Note: at standard pressure temperature (STP) Temperature = 0°C = (0 + 273.15) K = 273.15 K Pressure…
Q: Provide the structure of Thr-Gln-Met.
A: Here, we have to draw the structure of the peptide Thr-Gln-Met.
Q: Use the van der Waals equation of state to calculate the pressure of 4.00 mol of So, at 453K in a…
A: Given data,Moles of SO2=4.00 molTemperature=453 KVolume=3.80 LData taken from google;a for SO2=6.7…
Q: %#3 311. mL of two different liquids are poured into uncovered identical beakers and let stand for…
A: We can observe from the fig. that liquid X is reduced to half in 10 mints whereas in liquid Y the…
Q: Show the chemical equation for the hydrolysis of sucrose.
A: Hydrolysis means breaking of bonds using water. Sucrose has chemical formula C6H22O11.
Q: CH3 convort to a newman CI projection Ci Br エ
A:
Q: OMe 11. Me
A: 11. Step 1 : Birch reduction. Step 2 : acid treatment ( double bond isomerization). Step 3 :…
Q: If sea water contains 30 ppm gold, how many kilograms of sea water must be processed to remove 1.50…
A:
Q: The ideal gas law is PV = NkT, with k denoting the Boltzmann constant. It is important that the…
A: Ideal gas law is obtained by combining all the Gas laws to derive a common relation among all the…
Q: Which of the following parameter correlate inversely with surfactant penetration into skin? Micelle…
A: As per the rules only the first question can be answered:
Q: Glucose can exist in many forms including the open chain form , and the five membered furanose form…
A: The mechanism of the following is:
Q: of Mg coH)2 in 300.6 g of ta Ba water The Ôensity of the final Calculate. punst woynos mut to…
A: " Since you have posted a question with multiple sub-parts , we will solve first three sub-parts for…
Q: Br Br (a) Br Br H Br Br (b) Br H. Br Br Br (c) Br Br (d) ČI
A: Enantiomers are those optically active images of same compound which are mirror images of each…
Q: Give the family or class to which the following structures belong. Please be specific. Answer:
A:
Q: concentration of either the hydionium ion or the hydroxide lon is known then the concentration of…
A: we need to determine if the given hydroxide ion concentration is acidic, basic or neutral
Q: The reaction SO2Cl2 (g) → SO2 (g) + Cl2 is first order in SO2Cl2. Using the following kinetic data,…
A: Since you have asked multiple question, we will solve the first question for you. If youwant any…
Q: For the following reaction, 25.7 grams of carbon disulfide are allowed to react with 99.5 grams of…
A: Given, mass of carbon disulfide (CS2) = 25.7 g mass of chlorine gas (Cl2) = 99.5 g Maximum amount of…
Q: When a molecule has two esters, it can react via an intramolecular Claisen condensation. This is…
A: The product is as follows:
Q: synthesis
A:
Q: Define the following phenomena with reference to main group compounds: (d) multicenter electron…
A: Here we to explain muticentered elctron deficient bonding in main group elements
Q: 1.) The chemical formula for the ionic compound formed when elements of Ca and N react is , when…
A: Chemical formula of an ionic compound can be formed by criss-crossing the valencies of ions.
Q: 2. Which of the following is an oxidation reaction? A. Ag* - Ag B. As*5 - C. - ClO, - As0,3 - D. Vi+…
A:
Q: 5. How many calories are needed to heat 50 g of ice at -17 deg C to steam at 115 deg C? C (ice) =…
A: Given data,Mass of H2O=50 gInitial temperature=-17oCFinal temperature=115oCCice=0.5…
Q: Exactly 3 g of carbon was burned to CO2 in a copper calorimeter. The mass of the calorimeter is…
A: Given data,Mass of C=3 gMass of water=2000 gMass of calorimeter=1500 gInitial temperature=20oCFinal…
Q: Aluminium has a density of 2.70 g/cm3. How many moles of aluminum are in a 13.2 | cm block of the…
A:
Q: 4-oxobutanoic acid : predict number of NMR signals, splitting pattern of signals and integration.
A:
Q: What daughter isotope is produced during the alpha decay of Uranium-238? Pu-242 Th-234 O Th-236…
A: ANS. Th-234
Q: At a certain temperature, the equilibrium constant K for the following reaction is 0.010 : Br, (g) +…
A: We have to predict the correct statement about equilibrium
Q: For each titration, predict whether the equivalence point is less than, equal to, or greater than pH…
A:
Q: 18) At elevated temperatures, dinitrogen pentoxide decomposes to nitrogen dioxide and oxygen…
A:
Q: H+ -H HO, (a) + 2 ELOH (b) HO.
A: ->alcohols have nucleophilic character hence , it can give nucleophilic addition reaction to…
Q: Br NaCN H30* A 1. LIAH4 2. H20 C |(CH3CO)20 I
A:
Q: 15. Lenses are coated with thin film to reduce a. Diffraction d. Refraction C. Reflection foronce…
A: Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: Consider the following mechanism for the formation of nitrogen dioxide: 2 ΝΟ (g). N,O2(g) (1)…
A: Given-> 2NO2(g) --> N2O2(g) N2O2(g)+O2(g)---->2NO2(g)
Q: Consider the following isomers of hexene: A. a disubstituted cis- alkene B. the geometric isomer…
A:
Q: Calculate the solubility at 25° of CaF2 in pure water and in a 0.0010M NaF solution. You'll find Ksp…
A:
Q: Which molecule is a tertiary amine?
A: There are four types of amines : Primary amine Secondary amine Tertiary amine Quaternary…
Q: 6.67 x 10-3 g of arsenic (As) is found in a 0.600 L sample of water. If the density of this sample…
A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please…
Q: Express the answer to two decimal places. What is the pH of a solution that results from mixing…
A: The pH of the solution is given below
Q: What is the pH of a 0.391 M weak base solution? The Kp of the weak base is 0.000077. Your Answer:
A: In this question we have to tell the PH of the solution.
Q: Surface sanitizers were prepared using ethyl alcohol/water and isopropyl alcohol/water solutions. An…
A: Given: Ethyl alcohol = 70 % v/v isopropyl alcohol = 70 % v/v density of water = 1.00 g/mL density of…
Q: Provide the appropriate reaagents or product. 1. PdoLn, EtgN,mecN Me -> 2. Na BH, MeOH 3. CI HO…
A:
Q: Draw the structures corresponding to the following intermediate products for the following multistep…
A: In this question we have to tell the product of the reaction sequence.
Q: Que what wsillthe final Bymthetictraniformation: sproducte_fallowing HNO3 Alcly conc fuming dilute…
A: It is an example of electrophilic aromatic substitution reaction . Here we are required to find the…
Q: 44 delete TFntaime d. е.
A: In this question we have to tell the name of the given molecule.
Q: Write the net cell equation for this electrochemical cell. Phases are optional. Do not include the…
A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…
Q: The normal boiling point of a substance is 433 °C. Calculate the pressure at which this substance…
A: this solution is done using the clausius-clapeyron equation .
Q: 1. LDA Br 2. 1-Phenylethanone
A:
Step by step
Solved in 3 steps
- (i) (ii) (iii) (iv) 'I OMe HO H g H N Me Br SnMe3 OSiMe3 CHO OH NaNH, NH3 (1) Phl, Pd(PPH3)4 THF, reflux 1. Ph3P=CMe2 2. "Bu4NF 3. H30 + CH₂12, Zn C C₂H₂NO D C₁1H₁1N E C10H16O F C15H26O2(d) 3-13. Distis me Jum 4 A method of analysis yields weights for gold that are low by 0.4 mg. Calculate the caused by this uncertainty if the weight of gold in the sample is (a) 900 mg. (c) 150 mg. 1-7. The method described in Problem 3-6 is to be used for the analysis of ores that assay about 1.2% gold. What minimum sample weight should be taken if the relative error resulting from a 0.4-mg loss is not to exceed -0.2%? percent relative error (a) (b) (b) 600 mg. (d) 30 mg. 3-14. Wha stan stam 3-15. Сог mea (b) -0.5%? (a) -0.8%? (c) (d) 1.2%? 3.5 3-8. The color change of a chemical indicator requires an overtitration of 0.04 mL. Calculate the percent relative error if the total volume of titrant is (a) 50.00 mL. (c) 25.0 mL. 3-9. A loss of 0.4 mg of Zn occurs in the course of an analysis to determine that element. Calculate the per- cent relative error due to this loss if the weight of Zn in the sample is (a) 40 mg. (c) 400 mg. 3.1 3.1 (b) 10.0 mL. 3.3 2.5 (d) 40.0 mL. Fo (a (E (b) 175…Provide the names for the following (3 points each): a) Blank 1 b) Blank 2 c) Blank 3 Last saved 8:04:23 PM Questions Filter (8) aming1.png н-с-с-с-н | | | CI H НО CH3 H ||| дн receipt-6935.20227....book Н w 0. ACEC $20 Week 13....pdf
- (а) 2103 (ад) + 10 Cu" (aq) + 10 н"(ад) — 10 Cu"** (ag) + la (ag) + 5 H-0() O P() | Cut (ag), Cu?* (аq) || IOз (ад), н* (аq), I (ag) | Pt(s) O Pel(o) | Cu* (ag), IOз (ад), н* (аg) || Cu?* (ag), I, (ag) | Pt(8) O Pt(s) | IO3 (ag), H† (aq), I2 (aq) || Cu* (aq), Cu²+ (aq) | Pt(s) О Pe(6) | Cu?* (ag), I3(ag) || Cu" (аg), 10; (аg), н* (ад) | Pt() (b) Zn(s) + 2 Ag* (aq) = Zn²+ (aq) + 2 Ag(s) O Zn(s) | Zn²+ Zn(s) | Ag* (ag) || Zn²+ (aq) | Ag(s) O Ag(s) | Ag* (aq) || Zn²+ (ag) | Zn(s) O Ag(s) | Zn²+ (aq) || Ag* (aq) | Zn(s) (aq) || Ag*(aq) | Ag(s) (с) НаО(ад) + 2 H* (аq) + 2 е — 2 H:0() E° = 1.78 V Оэ (9) + 2 H* (ад) + 2 е НаОz(аg) Е 3 0.68 V O Pt(s) | O2(g) | H2O2 (aq), H* (aq) || H2O2 (ag), H* (ag) | Pt(s) O Pt(s) | H2O2 (ag), H* (ag) || 02(9) | H2O2 (aq), H* (aq) | Pt(s) O Pt(s) | H2O2 (aq) | O2(9) || H† (aq) | Pt(s) O Pt(s) | H2O2(aq) | Pt(s) (d) Mn'* (aq) +2 е — Mn(s) Е 3D - 1.18 V Fe+ (aq) + 3 e → Fe(s) Е 3D -0.036V O Mn(s) | Mn²+ (ag) || Fe*+ (aq) | Fe(s) O Fe(8) | Mn²+ (aq) || Fe* (aq)…Gb6cd_i-5c7IV_IVquz8U4UO2epq7z4kBnpYZ5iA/edit > 2 ons Help Calibri - - [12] + B 7 U . UA 2 3 ge 2: Problems of Water and Air Quality Questions 1. Why is it recommended to have a carbon monoxide detector on each floor of a home? Et © ª @ E- E 4-B-E- 2. What impact would the increased use of electric vehicles have on environmental damage caused by acid rain? 3. Why is ground level ozone most likely to reach its highest concentrations on hot, sunny days during periods of heavy traffic in large cities? Page 3: More Air Pollution Issues: Questions 4. The COVID-19 pandemic forced many people to work from home for extended periods. During these periods, many cities reported unusually low levels of smog. Suggest an explanation for this observation. Page 4: Water Pollution: Questions 5. Explain how ozone can be both harmful and beneficial. 6. India relies heavily on burning coal to generate electricity. How does India's reliance on coal contribute to the poor air quality experienced in many of…9) Using error propagation formulas, find (i) the absolute uncertainty and (ii) the percent relative uncertainty for each of the following operations. (a) 6.1 (+0.3) – 3.6 (±0.2) = ? (b) 9.56 (+0.06)X 0.017 (+0.002) = ? (c) [6.9 (±0.3) – 3.9 (±0.2)] ÷ 9.32 (±0.04) = ? (d) 8.24 (+0.06)X {[6.9 (±0.3) X 10-3] + [4.2 (±0.2) X 10-3]} = ?
- Q| 500 mg of dissolVed in water. the Calcium content of the Sample is precipitated as CaNHPOy.6H2O and ignition and weighed as Car P Ou .if the Sample weight is 200 mg.calculate the Percentage of ana ly te in the S amp le Sample Coutaining Ca, has been Ca = 4o CazPO4 = 126. CaNHupon.6 HzO =261 %3DA chemist obtained the following data for percent lindane in the triplicate analysis of an insecticide preparation: 7.23, 6.95, and 7.53%. Calculate the 90% confidence interval for the mean of the the three data, assuming that (a) the only information about the precision of the method is the precision for the three data. (b) on the basis of long experience with the method, it is believed that s---->σ lindane. (c) If s=0.28 is good estimate of σ, how many replicate measurement should be made in order for the mean for the analysis of sample to be within 0.2% of the true mean 90% of the time.SrCl, Observations B|I|U X X + fx | ®| D e Normal Activated charcoal observations Normal BIU fx| 田=| || 的|| || In 1. Based on your understanding of color's relationship to wavelength, identify the approximate wavelength of light (nm) emitted by strontium when it was burned. (No quantitative data was collected for this; you are giving an approximate value only, based on what you observed.) Explain your reasoning in full, making sure to cite specific data and observations to support your answer. Normal BIIIU X:| X'|- EE = fx| DI e 2. While boiling potatoes for dinner in salted water, the pot boils over and you notice that the flame on your gas burner turns to bright yellow-orange. How would you explain the appearance of a color in the previously blue flame? Normal BIIU X X + 田=|IT| 3. What would you conclude about chloride based on your results in the flame tests? Xe | X° | → EI fx| fr DI e E E IT E IT Normal BIIU 4. Place the metal solutions you tested in order of increasing energy…