4Al(s)+3O2(g)→2Al2O3(s)4Al(s)+3O2(g)→2Al2O3(s) Given 15.0 g of Al, how many grams of the product Al2O3 could be produced?

Q: Question 3: Please state whether each of the following molecules is chiral or achiral. If you…

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Q: Riboflavin absorbs UV-visible light making the electrons in the molecule more energetic. As a…

A: This question can be answered using the concept of Jablonski diagram.

Q: The energy levels of one-electron ions are given by the equation En (-2.18 × 10-18 J) 2² where Z is…

A: Energy of a photon given by following formula  E = hv E = hc/λ Where h plank's  constant = 6.625 ×…

Q: 31P (¹H) NMR Predict the 31P(¹H) NMR spectrum for Ph,PBH, and explain your answer. (For ¹¹B, spin…

A: Here we are required to predict the 31P NMR spectrum

Q: When Al is obtained by electrolysis from Al2O3, the minimum number of coulombs required to produce…

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Q: Consider the balanced equation of KIKIr eacting with Pb(NO3)2Pb(NOX3)X2  to form a precipitate.…

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Q: If you want to prepare  750 mL of a 0.20 M solution of sodium hydroxide, how many milliliters of the…

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Q: Macmillan Learning Calculate the molecular mass (molecular weight) of lauric acid, C₁2H2402.…

A: Given - Compound C12H24O2

Q: What half reaction occurs at the anode during the electrolysis of molten potassium bromide: OK---->…

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Q: Curved arrows are used to illustrate the flow of electrons. Follow the curved arrows and draw the…

A: Given : structure of reactant.

Q: PF3                   BaS                  H2S                  SiH4                 AlCl3   For…

A: PF3 : It is an covalent compound. In this molecule the electrons are shared between phosphorus(P)…

Q: Relationship between polarity and thin layer chromatography​?

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Q: Classify each chemical reaction: Reaction H₂SO3(aq) → H₂O (1) + SO₂(g) - Cl₂(g) + 2KI (aq) 2K Cl(aq)…

A: Balance chemical reactions are those which number of atoms on both side of the reaction are equal.…

Q: The following two drawings are resonance structures of one compound [K But the following two…

A: Delocalisation of pi electrons leads to resonance structures.

Q: Step 1 Add curved arrow(s) to draw step 1 of the mechanism. Modify the given drawing of the product…

A: Given reactants are as follows:

Q: Your calibration curve will be generated using absorbance and concentration data. However, you…

A: %Transmittance is the amount of light passed through the solution unabsorbed.

Q: What quantity in moles of KBr are there in 30.3 mL of 0.150 M KBr?

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Q: A 1401 kg1401 kg car is traveling down the road at 85.8 km/h.85.8 km/h. While traveling at this rate…

A: The kinetic energy of the vehicle in kilojoules is  ≈ 398 kJ

Q: Cycloheptatriene (shown below) is non-aromatic because it A) does not have 4n+ 2 pi electrons. B) is…

A: For compound to be aromatic it must be Cylic Planer Fully conjugate  Contains (4n+2) pi electrons.…

Q: It is possible to write at least two different structural formulas for each of the following…

A: Same molecular formula different bonding connectivity are called structural isomers

Q: Calculate the pH when 29.0 mL of 0.150 M KOH is mixed with 20.0 mL of 0.300 M HBrO (Ka = 2.5 × 10⁻⁹)

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Q: What is the configuration of this compound's chiral center? HO H

A: Stereochemistry is branch of chemistry in which we deal with three dimensional arrangement of atoms…

Q: What is the major organic product obtained from the following reaction? H a. butyrophenone,…

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Q: Propose an efficient synthesis the following transformation: MOO OMO (b) The transformation above…

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Q: Calculate the number of atoms in a 3.36 x 10³ g sample of boron. Macmillan Learning number of atoms:

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: chergy R A₁ 0: S H R R H A₂ 0.8- N-H 8+ RE N-H 19 H

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Q: To prepare a very dilute solution of K2Cr2O7 (294.18 g/mol), 0.661 g of K2Cr2O7 was transferred to a…

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Q: Describe the structure, bonding, and properties of this organic functional group. What is the…

A: The given structure is that of Toluene which is a non-polar molecule.

Q: a) Draw and name the eight isomeric alcohols with the formula C5H12O b) Classify each of the…

A: Organic compounds are the compounds that are made up of carbon and hydrogen atoms. We have been…

Q: A weather balloon is filled with 195.0 L of He and launched from sea level (T= 20.0°C, P= 755 torr).…

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Q: What is the strongest attractive force present in the pure substances below? a.CH3CH₂CH3 b.CH₂Br2 C.…

A: In case of non-polar covalent bond, there exist van der Waal force of attraction. In case of polar…

Q: A ground state hydrogen atom absorbs a photon of light having a wavelength of 93.7 nm. What is the…

A: The energy of nth stationary state of hydrogen atom is given by the formula  En = -2.18×10-18n2 J…

Q: The pH of a 0.0060 M solution of HNO₃ is

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Q: del 2: Structures and abbreviations of the 20 standard amino acids in form, Hydrophobic amino acids…

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Q: What product would occur after an addition reaction of H2O to the following acid? How would the…

A: The addition of water to a double bond would result in formation of alcohol.

Q: A Chemistry student at Agora is calculating the average atomic mass of Potassium using the following…

A: Given, Relative abundance of potassium  Isotope of K Relative abundance K-39 93.12 % K-41…

Q: A ground state hydrogen atom absorbs a photon of light having a wavelength of 92.57 nm. It then…

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Q: e e following compounds is most basic? se I II III IV O

A: The base which form a stable conjugate acid that is more basic . -> conjugate acid is formed when…

Q: See Periodic Table See Hint If the temperature of a gas confined to such a cylinder is raised from…

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Q: Phosphoric acid, a mild acid used among other things as a rust inhibitor, food additive, and etching…

A: Mass of phosphoric acid = 2.0 x 10 3 g

Q: Explain why the emission spectrum of a hydrogen atom is different than the emission spectrum of a…

A: Emission spectrum: When electron is subjected to photons with different energy, they will jump to…

Q: Compound X has a molar mass of 176.12·gmol−1 and the following composition: element mass % carbon…

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Q: Determine the pH during the titration of 18.9 mL of 0.253 M hydrobromic acid by 0.205 M potassium…

A: In strong acid and strong base titrations, the pH of the solution depends on the concentration of…

Q: 4. Why is the free energy of an ideal liquid mixture less than the free energy of the pure liquid?…

A: Freezing-point When less of another non-volatile material is added, the temperature at which a…

Q: If you have 2.94 × 1027 atoms of silver, how many moles of silver do you have?

A: 2.94 × 1027 atoms of silver

Q: What is the melting point of a molecular compound? What is the melting point of an Ionic compound?…

A: 1. Generally melting point of molecular compounds are low. 2. Generally melting point of ionic…

Q: You are given a mixture of benzoic acid, 2-naphthol and 1,4-dimethoxybenzene and you are asked to…

A: The separation of mixtures of acids in presence of two layers (aqueous and organic) is called the…

Q: For parts b and c could you please explain why there is a cis isomer formed and how to know when…

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Q: Part B CH 1. (CH-CH₂), TH 200 Drew the molecules on the canvas by choosing buttons from the Tools…

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Q: What volume of 0.10 m NaOH can be prepared from 250. mL of 0.30 m NaOH?

A: Given : intitial molarity = 0.3 M               Initial volume = 250 mL                Final…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.