Q: of Pd(acac)2, Cul Br DMSO 125 °C, 24 hr O,N. Br Pd(OAc)2, K2CO3 DMF 135°C, 5 hr
A:
Q: 16. Based upon the following mass spectral data, what is the correct formula of the compound that…
A: A mass spectrum is an intensity vs. m/z plot of positively charged molecular ion and fragment ions…
Q: Which m/z value would indicate that nitrogen was present in a sample? m/z = 150 27. d. e. a. m/z =13…
A: According to the nitrogen rule a molecule having odd number of nitrogen atoms has odd mass while a…
Q: 2 (3) Expected IK H HO Но 500 peaks pn 201 shew c bios H
A: IR tells us about the functional groups present in the compound.
Q: Which Ksp expression is correctly written? Calcium fluoride, Ksp = [Ca2*][F"]2 Zinc phosphate, Ksp =…
A:
Q: Acetic Acid contains only C, H, nd O. 4.52mg sample of Ace tic Acidis complotely burned. It gives…
A:
Q: Which of the following setups would you use to obtain the number of O atoms in 86.8g of Cr(NO3)3?
A:
Q: All of the following increase the width of a confidence interval BUT? Increased variability…
A: A multiple choice question based on general chemistry, which is to be accomplished.
Q: Al + O2> Al203
A: The given unbalanced chemical reaction is, _______Al + ______O2 ------> ______…
Q: What is the importance of the following analytical methods in chemical analysis? i. UV-vis…
A:
Q: а. 4Be + 2 He → + X on b. 3927CO +X → 56 25MN + 42ɑ с. 14,Ве +'on 1416C + X d. 2811Na + 2,H → X + 'H…
A: We have to Complete the fool nuclear equation and identify X in each case fo the reaction
Q: Cr in an ore exists as Cr2O3, and is converted quantitatively to BaCrO4 (253.33 g/mol). Calculate…
A:
Q: Explain how you can tell the difference Fet dengan Fe** Fe+ dengan Cu²+ Zn(NH3);* dengan Zn(OH);
A: According to Q&A guidelines of Bartleby, we are supposed to answer only 3 sub-parts out of…
Q: What is the difference between a primary and a secondary standard? Give an example of each.
A: Primary Standard Solution: Primary standard solutions are solutions made out of primary standard…
Q: The representations 14N or 15N give more information than simply the chemical symbol N. Explain?
A: Interpretation- Explain why the representation 14N or 15N give more information than simply the…
Q: Cd(s)Cd2*(aq)||Cu2+(aq)|Cu(s) O Cd (s) > Ca2* (aq) + 2e O Cu?* (aq) + 2e Cu (s)
A:
Q: 7. What experimental factors are assumed to be constant in this experiment?
A: (7) Consider the ideal gas equation is as follows; PV = nRT…
Q: If the plant poduces 1.6*10- kg(1600 metric ton) of Cl2 daily, estimate the quanties of H2 produced…
A: Given: Mass of Cl2 = 1600 metric ton = 1600 ×103 Kg = 1600×106 g Molar mass of Cl2 = 70.906 g/mol…
Q: Assuming that the percent of uncertainty in the calculated molar mass is the same as the percent of…
A:
Q: g. 126C + 126C -→ 2311Na + h. 2010NE + 12C + 12 C→ 2311Na + → 16,0 + 42HE + °%Y i. 20, 10Ne + 42He→.
A: Radioactive decay refers to the breakdown of an unstable nucleus to a stable nucleus with the…
Q: Explain
A: According to the question, we need to discuss the advantages and disadvantages of the mass…
Q: Give an overview of the method of mass spectrometry and how it works.
A: Mass spectrometry helps us to find the molecular mass of the unknown organic compound and also the…
Q: Formula for theoretical yueld
A: Theoretical yield can be calculated by knowing the percent yield and the actual yield.
Q: Describe and explain what fields are mass spectrometry used in?
A:
Q: How sample can be introduced into mass spectrometer and which method is more suitable.
A: We have to find the how samole can be introduced into mass spectrometer. Solution : In Mass…
Q: बक421K Kc = ५27 ४/0५ एप्पोमदपल कमथ क क क)=D o95 २ M कलकनं न Peजaा= १ व एपणागंच्यंपन.
A:
Q: In a mass spectrum, the peak of greatest abundance is referred to as the _________________________.…
A: We have to tell what peak of greatest intensity is called and in mass spectrum what is label on X…
Q: Question 2
A: Any compound that possesses water molecule in a certain amount in H2O form is stated as "Hydrate".…
Q: 9. A 0.324 g sample of a compound undergoes combustion analysis and gives 1.095g CO₂ and 0.224g H₂O.…
A: Given: Mass of compound is 0.324 g. Mass of CO2 formed is 1.095 g. Mass of H2O formed is 0.224 g.…
Q: The equation 96 250Cm-?+ Sr+4n is correctly completed as 96 250Cm→ 14Ce+ 2Sr+4{n. A) True B) False
A: we see the mass number of Cm on the left hand side is 250 and on the right hand side of the equation…
Q: What is the magnitude of teh uncertainity associated with each of the following measurements. a)…
A: The quantities which come across during the scientific studies are named as physical quantities. The…
Q: If the uncertainty in delivering NaOH is ±o.01 mL, calculate the absolute uncertainty in the…
A: The given information is: Uncertainty in delivering NaOH = ±0.01 ml Molarity = 0.169 M Final volume…
Q: Which is higher: 116 °F or 45.5 °C ?
A: T1 = 116°F T2 = 45.5 °C
Q: • Determination of Mass Percent of Ammonium Chloride • Mass of evaporating dish and original sample…
A: The percent of a substance in a sample of mixture is calculated using formula : Percent = ( mass of…
Q: How does NIST allow for chemical compound data to be readily accessible.
A: Answer - According to the question - NIST has developed and distributed Standard Reference Data in…
Q: Which is true for standard deviation (s) for a sample size (n)? A The greater the n, the smaller the…
A: Standard deviations decreases, with the increase in the sample size.
Q: Which is true for standard deviation (s) for a sample size (n)? A The greater the n, the smaller the…
A:
Q: A calibration curve for dye gives you the following equation: A = (0.211 M-1 )c + 0.058 If you…
A:
Q: Given the following data, determine the % relative error if the true concentration of NazSO4 is…
A:
Q: Draw the organic products of each of the following reactions.
A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…
Q: A compound contains only Mn and F. The ratio of Mn and F is 2.54 moles of F per 1 mole of Mn. If the…
A: The ratio of Mn and F in the compound is 1:2.54
Q: For the reaction 4AB = 2A2+ 4B, Kc =6.90.11 5 Therefore Kc for the A2+ 2B= 2AB IS (äbäi 1) 0.381…
A: For the given reaction 1, the expression of Kc will be Kc1 = [A2 ]2 X [B]4 / [AB]4 = 6.90 where [A2…
Q: (a) Define the following terms: (i) Determinate errors (ii) Indeterminate errors (iii) Name and…
A: Random error ( indeterminate error) It is caused by uncontrollable variables, which cannot be…
Q: CUCN OR SN/HCI AIC (2) SNHC options. 80212 CCN Cent KMnOt → B HNO3 H2804 Zn(Hg) Hel Brzihn <CH₂H…
A:
Q: 1. a) calculate % by mass of naphthalene, 3-nitroaniline and benzoic acid in original sample 1. b)…
A: 1)a. The molecular mass of naphthalene = 128.17 gm/mol The molecular mass of 3-nitro aniline =…
Q: What do you mean by Mass Spectrometry?
A: Mass spectrometry is an analytical tool useful for measuring the mass-to-charge ratio (m/z) of one…
Q: www 200 180 S 160 140 120 100 (CDGL3) 80 t 60 q q 20 PPM 0
A: We are given C-13 NMR spectrum of the unknown molecule. We have to analyze the C-13 NMR spectrum…
Q: S 200 180 160 140 120 100 (CDCL3] 60 60 40 t t q TTTT 20 PPM 0
A: We are given C-13 NMR spectrum of the unknown molecule. We have to analyze the C-13 NMR spectrum…
You have conducted an experiment where you obtained 22.4g ZnCl2. The accepted value is 22.7g. What is the error and relative (%) error?
Step by step
Solved in 2 steps with 1 images
- 6 A5.301 g of sample of a mixture containing MgSO, 7H,O (MM-246.5) and NaCI (MM-58.44) yielded 3.784 g a solid residue after this mixture was heated. Given this information, how many grams of sodium are in the mixture? Report the answer to 3 significant figures. Type your answer...Explain the advantages and disadvantages of mass spectrometry?(8) Identify whether the following are examples of systematic or random error or are mistakes: a. Using an inaccurately calibrated buret. b. An uncertainty of 1 mg in the weight of your sample.∓ c. Overshooting the endpoint on your first sample, then hitting the endpoint on the remaining samples.d. Failing to let your volumetric pipet drain for a few seconds have most of the liquid has been delivered.
- student found a bottle of unknown origin in the basement of an "CAUTION—contains С₁H₁O.” No other A old house. The bottle was labelled information was given, but inside the bottle were some white crystals. The student took the bottle to a chemistry laboratory, where she analyzed the crystals with the help of the laboratory staff. C₁2H₁6O reacted with Br₂ in CCl4 adding one mole of Br, and forming C₁₂H₁OB2₂. When a sample of C₁₂H₂O was reacted with O3 followed by Zn/H₂O, two different samples, J and K, were obtained. Compound J had a molecular formula of C.HgO₂, and its NMR is shown below. Compound K had a molecular formula of C₂H₂O, and it could be oxidized to compound L, with a molecular formula of C₂H₂O₂. The IR spectrum of L showed a very wide, strong band centred around 3000 cm*¹. The NMR spectrum of L showed only two different absorptions: a doublet (6H) at 0.9 ppm and a septet (1H) at 3.6 ppm. There was also a singlet (1H) off the scale at 11.8 ppm. students, deduce possible…(a) Show that the formula mass of NaCl is 58.443 (+0.002) g/mol. (b) You dissolve 2.634 (+0.002) g of NaCl in a volumetric flask with a volume of 100.00 (+0.08) mL. Express the molarity of NaCl and its uncertainty with an appropriate number of digits.2. Quantitative analysis student Analytical analyzed an ore sample for its lead content and obtained a mean of 4.75% Pb for five measurements. If the certified true value is 4.50%, what is the (a) percent error? (b) percent accuracy?
- 55.8 % C, 11.6% H and 32.6% N by mass Determine the molecular formula of the particles of the substance. Relative Intensity 100 80- 80 40 20 0- C3H8N3 C4H10N2 C5H12N2 C₂H5N 25 50 75 mm 100A chemical analysis yields masses of Zn that are higher by 2 mg compared to the expected value. Calculate the percentage relative error if the true mass of Zn in the sample is 125 mg. O 100.4% O 0.8% 98.4% O 1.6%2) As an example of precision and accuracy of data, suppose the % carbon in a single compound has been measured thrce separate times by 2 different students. The theoretical % carbon is 21.34%. Student 1: trial 1:26.11%, trial 2: 26.24% trial 3: 25.92 %, Avg - 26.09 Student 2: trial 1: 20.35%. trial 2: 22.64 % trial 3: 19.79 %. Avg = 20.93 a) Which student had the more precise data and how can you tell? b) Which student had the more accurate data and how can you tell? 3a) Calculate the % error of Student 1 data in problem 2 above. Show all work below. WATCH SIG FIGS
- Which scale is most useful for reporting data from the spectrometer? Why?"Analytical data are never more reliable than the sampling technique". Explain this statement.How is accuracy and precision related to errors incurred in the chemical analysis? Why systematic errors are also called determinate errors? Why random errors are also called indeterminate errors?