Doing the flame test is important in chemistry because of the following reasons EXCEPT this    a. it identify the metal and its ions in the sample b. for illumination and as light energy c. the presence of colors is sign atomic emission d. it identify different wavelength of light

Q: What is the hydroxyl ion concentration of a solution with pH 2.43?

A: pH + pOH =14 pOH = 14-pH pOH =14-2.43 =11.57

Q: 43. 5-Androstene-3,17-dione is isomerized to 4-androstene-3.17-dione by hydroxide ion. Propose a…

A: Hydroxide ion, OH-(aq) being a strong base, attacks the acidic proton at α-position to the carbonyl…

Q: The rate law for the reaction NO₂(g) + O₂(g) → NO(g) + 03 (g) = k[NO₂][0₂] is given by rate = k If…

A: According to the question we have a chemical reaction            NO2(g) + O2(g) → NOg + O3g The rate…

Q: 3. olumlu sham Me Ph Ph Ph H NaOEt Ph

A:

Q: Consider the reaction below: CaCO3(s) + 2H3O+ (aq) H=15.3kJ Since AH is a positive v a Therefore,…

A:

Q: How many grams of rubidium are in 3.49 x 1024 atoms of rubidium? Enter your answer in decimal form…

A: 1 mole atoms = 6.023 * 1023 atoms. molar mass of Rb = 85.4678 gmole  and mass of Rb = mole * molar…

Q: Van der Waals Equation of State The Van der Waals equation of state is: (p+ ²) (V - nb) = nRT Table…

A: Given :-  Volume of CO2 = V = 2.91 L  Moles of CO2 = n = 0.213 mol  Temperature = T = 207 K  From…

Q: If 43.3 mg of Al(OH)3 react with 14.6 mg of HCl, how much AlCl3 is formed?

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 1. How many grams of glucose would you need to make 500 ml of an 8% solution? 2. What is the percent…

A: Answer: These questions are based on (w/v)% concentration of solute in solution where volume of…

Q: The molar mass (to two decimal places) for Fe2(CO3)3 is

A: Answer: Each mole of Fe2(CO3)3 contains 2 moles of Fe atoms, 3 moles of Carbon atoms and 9 moles of…

Q: 1) You are given an unknown solution, which contains both aqueous barium ion, Ba²+ (aq), and aqueous…

A: Answer: This question is based on relative solubility. To separate the ions, we have to choose such…

Q: 4. Consider a sample of gas at 393 K and 22 atm. (a) Calculate the molar volume V (L/mol) of the…

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Q: If you had 1 mol of Cr8(PO4)3 how many moles of Cr would there be?

A:

Q: The density of gasoline is 0.65 g/mL. What is the mass in pounds of 45.0 L (about 12 gal) of…

A: Since, Density of the liquid is the ratio of mass to the volume of that liquid. Thus,

Q: Choose the correct IUPAC name for the following compound: & a) 1,3-dichlorocyclohexane Ob) Oc)…

A:

Q: Draw the skeletal structure of pentanal from the Lewis structure (shown below). Η Η Η Η Η :Ο: ||…

A: In the skeletal or bond line angle formula, each covalent bond between carbon-carbon or…

Q: The mass spectrum of CH3F is given in the chart below. (a) Draw a likely structure for the molecular…

A: Mass spectrometry is one of the best techniques for analyzing the structure of a molecule and…

Q: Saponification is a process in which soap is produced from the chemical reaction between  animal fat…

A:

Q: Draw an “energy level diagram” for a nitrogen atom.

A: ENERGY LEVEL DIAGRAM OF AN ATOM:--Energy level is orbit around the nucleus of atom. •Orbit has…

Q: 14. OMe поба ОН HO2C² 12 NaHCO3 OMe он

A: -> In presence of halogen first of all there occur formation of iodinium ion which can opened by…

Q: OH H CCNH H----OC NH, H CHO -H C= I U 9

A:

Q: What is the pH of a 0.02M solution of HCl? What would the H+ concentration be? What would the OH-…

A: HCl is a strong acid  and it completely dissociates into H+ and Cl- ions. The pH of a solution is…

Q: Select the stronger acid: ņ H equally acidic

A: Given in following question two compound which strongest acid

Q: 7. CHBr3 t-BuOK Br Br

A:

Q: An atomic radius is about 100 pm. Convert the radius to inches. (1pm = 10°¹m)

A: 1 meter = 39.37 inches Given distance is in picometer(pm).  First convert picometer to meter and…

Q: 1.) A researcher claims that an ancient scroll originated from Greek scholars in about 500 B.C. Its…

A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: Chemistry Give the IUPAC name for the following metal complex: [Fe(H2O)4Cl2] The answer is not…

A:

Q: Consider the following reaction: CaCO3(s) +2 H3O+ (aq) ⇒Ca²+ (aq) + CO2(g) + 3H₂O(1) Which of the…

A: CaCO3 (s) + 2H3O+ (aq) = Ca2+(aq)  +CO2 (g)+ H2O (l) Reaction favor in right direction

Q: 1-5. How do you make 0.5 L of pH 7, 0.1 M phosphate buffer (pKa=7.21) with NaH₂PO4 (MW 119.98) and…

A: pKa = 7.21 0.5 L of 0.1 M phosphate buffer = 0.5 L * 0.1 mole / L = 0.05 mole  Now  let mole of…

Q: The hydrogen atomic emission lines in the Balmer series are 656.2 410.1 nm... at what wavelength do…

A: The wavelength of line for the Balmer series is given to be 656.2 nm, 486.0 nm, 434.0 nm, 410.1…

Q: An electrical charged atom or group of atoms. What is it

A: All the substances in thE universe are made up of tiny particles known as atoms. Atoms can be…

Q: Me OH TSOH Me

A:

Q: 7. The rate constant for the hydrolysis of a m-chloro substituted and p-methoxy substituted organic…

A: Given  Rate Constant (km  ) of m- chloro = 0.50 Rate Constant( kp  ) of p-methoxy = 0.015 σ for m-Cl…

Q: the constitutional isomer for pentane (CH) Write the expanded structural formula Isomer name: Write…

A: Organic compounds are compounds that are made up of carbon and hydrogen. Isomers are those which…

Q: Draw the resonance structure of the following substance. Interactive 3D display mode H₂C 0 CH3

A: In resonance structure, we show the movement of electrons from one atom to another. In this movement…

Q: Draw an “energy level diagram” for a calcium (Ca) atom.

A: ENERGY LEVEL DIAGRAM:- Energy levels are orbit or shells around nucleus, togetherly constitute…

Q: Calculate the molar concentration of the solution formed when 69.68 g of MgSO4 * 6 H2O is dissolved…

A:

Q: From the given reaction: 2 I2 + KIO3 + 6HCl = 5ICl  +  KCl  +  3H2O     How many grams of iodine are…

A: Given - Mass of ICl = 28.6 grams

Q: 5. Lance obtains a silvery metallic unknown. He weighs the metal and finds that he has 60.55g. When…

A: Given,The weight of metal = 60.55 gVolume of water in the graduated cylinder = 25.2 mLThe final…

Q: Q3. When the orgo students did the experiment, they weighed out 2.105 g of Salicylic acid  and mixed…

A: Answer: Molecular formula of Salicylic acid=C7H6O3 Molecular formula of Acetylsalicylic acid= C9H8O4…

Q: (a) How would you determine the numerical value of the theoretical heat of reaction, DHrxn for the…

A: Given : Initial temperature of the water = 72oC

Q: Why do you think the helium atoms repel each other? (be sure to include descriptions of relevant…

A: He atoms are repell because :

Q: What is procedure in extraction of beta-carotene from carrot.

A: Extraction is a technique which is used to  a substance from a mixture. It is the first step to…

Q: The pure vapour pressure of benzene (C6H6) is 745 torr; the pure vapour  pressure to toluene(C7H8)…

A: Given: The pure vapour pressure of benzene (C6H6) = 745 torr The pure vapour  pressure to…

Q: Consider equimolar solutions of each of the following compounds; rank them in order of increasing…

A: -> pH = -log[H+]  -> As acidity increases H+ concentration increases and pH decreases. ->…

Q: 2. Give the major product of the following reactions: Br 2.1. 2.2. 2.3. 2.4. Br -CN OH 1-CH3 (2) (2)…

A: Diels–Alder reaction Reaction between a conjugated diene and an alkene (dienophile) to form…

Q: 4. Classify the following qua property: a.) Temperature b.) Mass c.) Weight d.) Volume

A: Extensive property:- Properties of system which depends upon mass Intensive property  Properties of…

Q: A group of students completed an experiment to determine the effect of temperature on the solubility…

A: The graph can be made using the given data values using Excel.

Q: Write the rate law for the following elementary reaction: CH3CH₂SiH3(9) C₂H4(9) + SiH4(9) ► Use k,…

A:

Q: NOCICH ste 2. 140 OPSA

A:

Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.