Helium readily forms ionic bonds following the octet rule. True False

Q: In the industrial synthesis of aspirin, 200 kg of salicyclic acid, C7H6O3 and 150 kg of acetic…

A: The balanced equation for the formation of aspirin from salicylic acid and acetic anhydride is:…

Q: (5 A new element, element Jn, is discovered on a separate planet. The energy requires to ionize one…

A: 5.)  First we would calculate energy in J/mol using the conversion factor between kJ and J . Then…

Q: Calculate the volume or weight of each to make a solution. Given: 10 ml of 0.1% quinine sulfate.

A: The concentration of a solute in a solution in w/v percentage is defined as the amount of solute…

Q: 3. Determine the reaction order and reaction rate constant for the decomposition of ozone in water…

A: To determine order of a reaction with the help of given data we plot graph because for different…

Q: 3. In solution, sodium methoxide is a weaker base than sodium tert-butoxide because..... A.…

A: Answer: These are the questions based on chemical properties of organic compounds.

Q: Write both the charge balance equation (CBE) and mass balance equation (MBE) for the following…

A: Mass balanced equation consist of the equilibrium concentration of species present in the solution…

Q: 1. You are approaching a traffic light. If the what is the wavelength frequency of the light? What…

A: According to question, traffic lights has 3 different lights of different wavelength. Here the given…

Q: The temperature dependence of the vapor pressure of solid sulfur dioxide can be approximately…

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Q: Spell out the full name of the compound.

A: Rule of IUPAC-1) Longest chain as parent chain.2) Numbering start from those side where more prior…

Q: 3.15 In each of the following questions, the series of molecules can be ranked from the most acidic…

A: A conjugate base is obtained by removing a proton(H+) from the most acidic hydrogen.  Acid(HA) ⇌ H+…

Q: 200ml of 0.350M lead (II) nitrate are added to 300 ml of 0.250M sodium iodide. What is the…

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Q: The hermal decomposition of phosphine (PH3) into phosphorus and molecular hydrogen is a first-order…

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Q: Anot O- (a) Determination of Specific Heat 150.0 g Lead -22.0 °C 50.0 g Water Insulation (b) after…

A: Specific heat of lead can be calculated based on the heat released on dissolution of lead in water.

Q: Choose any EAS reaction. For your choice show an arrow-pushing mechanism using the compound below…

A: Electrophilic aromatic substitution(EAS): The aromatic compounds do not undergo addition reactions…

Q: 681 Question 5 What is the total number of protons and neutrons in the nuclide? 97 42 Mo O 34 O 42 O…

A: Given -> Symbol of nuclide = 42Mo97

Q: 4. Draw structures for 8-amino-7,7-diethyldecanoic acid…

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Q: If 701 J of heat is available, what is the mass in grams of iron (specific heat = 0.450 J/g･°C) that…

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Q: Are there methods other than spectrophotometry to determine protein concentration? If there is,…

A: Protein Concentration: Protein concentration is referred to as the overall amount and content of a…

Q: The H-bonds present in water are the bonds present between H and O of the same molecule between H…

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Q: [References] Use the References to access important values if needed for this question. The boiling…

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Q: t dissolves 13.44 grams of urea, CH4N₂O (60.10 g/mol), in 292.4 grams of water. Use the table of…

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Q: You reacted 5.00 mL of 0.250 M copper (II) chloride with 8.00 mL of 0.100 M sodium phosphate. If the…

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Q: M Helium-neon lasers emit very high spectral purity red light at a wavelength of 632.8 nm, and were…

A: Given data :

Q: Chloral hydrate is broken down in the body after several hours. One reaction is oxidation to…

A: Given: Chloral hydrate is broken down in the body after several hours. We have to complete the…

Q: A sample of 500 mL Ne gas is at 660. mmHg and 55oC. What is the new volume if the pressure is…

A: Answer: Ideal gas equation is shown below: PV=nRTPVRT=nn=PVRT Here: n=number of moles of…

Q: A 25 g piece of lead at 90 °C (called A) is added to 25 mL of water at 20 °C (called B) in an open…

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Q: =. Potassium permanganate is a powerful oxidizer and reacts explosively with glycerol according to…

A: #(a): We are given the balanced redox reaction.  Mass of potassium permanganate, KMnO4 taken = 2.0…

Q: Calculate the molar mass of a strong electrolyte when a solution is prepared with 14.4 g of the…

A: Given Weight of strong electrolyte = 14.4 g Van't haff factor (i) = 2.39 Volume of solvent = 1.01 L…

Q: CHALLENGE PROBLEMS 1. You are approaching a traffic light. If the frequency what is the wavelength…

A: The relation between wavelength and frequency of light is :         V= C/λ Here   C is the speed of…

Q: The following chemicals will be available in the lab for this experiment: HẸHỘI NH₂ ANH ĐẠ BaCI…

A: 1. KSCN 2. DMG 3. CaCl2 4. White colour 5. (NH4)2CO3 6. H2O and NH3 7. Centrifuge

Q: Unknown A- Melting point Range? Experimental melting point? Possible Identity? Percent Error,%…

A: Melting point: The melting point of a substance is the temperature at which it changes state from…

Q: How many molecules (not moles) of NH3NH3 are produced from 7.93×10−4 gg of H2H2?

A: The number of molecules are determined by the number of moles of compound. Number of moles of…

Q: Which of the following compounds does not contain ionic bonding? O BeC12 O A1203 F2 O Na20

A: Covalent bonds are formed by sharing of electrons between atoms. We have given four compounds and we…

Q: has [NO] = 9.5x10-4 M when PNO = 380 torr. What is the [NO], in M, when PNO = (1.7x10^2) torr at…

A:

Q: 6. What is the frequency of a light source that has a wavelength of 620 nm? What is the energy this…

A: First we would convert wavelength from nm to m . Then using relation between frequency and…

Q: 12.)  What is the osmotic pressure, in torr, of a solution formed by dissolving 0.3864 g of…

A: Given -> Weight of ammonium perchlorate = 0.3864 gm  Volume= 150.7 ml = 0.1507 L (1L = 1000ml)…

Q: Identify the major products in the reaction of (R)-2-brimopentane with sodium cyanide in DMSO

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Q: Draw the structural formula of 4-tert-butylheptane

A: Answer: It is an organic compound whose structural formula we have to draw.

Q: Part A According to band theory, the element (in the first transition series) having all of its…

A: Composite band is six (4s*3d*) 1 from 4s and 5 from 3d.

Q: hydrogen by mass. Assume a 100.-g sample of this compound. How many grams of each element are in…

A: Just using the stoichiometry  Here

Q: Predict the geometry of the following molecules and ion using the VSEPR model  (d) H2Se, (e) NO2−.

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Q: Br HS N

A:

Q: The common laboratory solvent water is often used to purify substances dissolved in it. The vapor…

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Q: 1. For alcohol protecting groups, there are many options, including converting the alcohol to an…

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Q: Propose syntheses for the following compounds. Use benzene or toluene as your starting aterial. Br…

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Q: Indicate the valence orbitals and valence electrons for the following atoms: a. Lead b. Astatine c.…

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Q: Balance the equation by inserting coefficients as needed. equation: Li,N+ H₂O- -> LiOH + NH3

A: Here we are required to balance the given reaction

Q: What stretching frequencies (in cm¹) are present in the structure below? CI

A:

Q: You have a 11.5 mg sample of blood that contains various proteins. Hemoglobin is the only protein in…

A: Answer: Given data: mblood sample=11.3mg mFe=29.7μg Mass % of Heme=3.83%

Q: 3. Derive the empirical formula for the red solid based on the following composition: Ni, 20.315%;…

A: As per our guidelines, we are supposed to answer only one question. Kindly, repost other question as…

Actinides

The elements in which the extra electron tends to enter the 5f-orbitals of (n–2)th main shell are considered 5f-block elements. They are also named actinides. Actinides include 15 elements, from atomic number 89 to 103.