Q la- Calculate the radius of the first orbital of the hydrogen atom according to the Bohr model? What is the ratio of the radius of the second orbital to the radius of the first orbit of the same atom, and what is the speed of the electron in each orbit?

Q: A 1.50-g sample of hexane, C 6H 14 (MW = 86) undergoes complete combustion with excess 0 2 in a bomb...

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Q: Rank these in order of increasing reactivity in an SN1 reaction

A: Answer: C) I < II < III

Q: 3. Iron has a BCC crystal structure, an atomic radius of 0.124 nm, and an atomic weight of 55.85 g/m...

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Q: Copper(II)-ammonia system 1. Place 1 mL 0.1 M CuSO̟ into a test tube. Then, add 5 drops 1. 00 M NH, ...

A: Addition of excess ammonia, NH3 to copper(II) ion forms a complex compound that leads to a change in...

Q: A gas made up of atoms escapes through a pinhole 0.799 times as fast as Kr gas. Write the chemical f...

A: Given data, Molar mass of Kr =83.798 g mol-1 Rate of Kr = r  Rate of unknown = 0.799 r Molar mass an...

Q: beaker contains a total concentration of 0.33 molar of weak acetic acid with pKa=4.27 and pH=2.02. C...

A: Initial concentration= 0.33 M pKa= 4.27  pH= 2.02   

Q: Use the observation in the first column to answer the question in the second column. observation que...

A: The correct answer is given below

Q: The force between methylamine and acetate will be greater in methanol than in water because ________...

A: #Q.2: Both methanol(CH3OH) and water(H2O) are polar solvents capable of forming hydrogen bonding.  

Q: of chemical reactions? Select one: a.

A: Rate of chemical reaction is change in concentration of reactants per unit time interval.   

Q: Using the VSEPR theory, predict the molecular structure of the following molecule: H2Se O tetrahedra...

A: In VSEPR theory mainly explaines the bond angle due to  interaction of lone pair with bond pair elec...

Q: I have problems understanding the results of this experiment, could you help me by explaining the re...

A: Lambda Max is a wavelength at which absorbance of solution is maximum comparing with absorbance at o...

Q: e empirical formula a compound is C 2H 4O and its molecular weight was determined to be approximatel...

A: Given; molecular mass = 44 g/mol

Q: What is the freezing point of 0.251 m urea in water? b. What is the b

A: Molality (m) = 0.251 m □Tf = Kf × m  = 1.86 × 0.251 = 0.467 °c So, Freezing point of solution = -0.4...

Q: you are using MMA with two initiators N,N-Diisopropylethylamine and Ethyl α-bromoisobutyrate to reac...

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Q: Match the following electron configurations to the correct atoms or ions. v 1s22s22p6 v 1s22s22p63s²...

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Q: Nitric acid and nitrogen monoxide react to form nitrogen dioxide and water, like this: 2 HNO3(aq)+NO...

A: KC is equilibrium constant

Q: 2. Which of the following structural formulas represent identical compounds and which represent cons...

A: for the given structures, we need to identify the structures that are identical and the structures t...

Q: nsider the following reaction at equilibrium. 2002 (g) → 200 (g) + O2 (g) , AH° = -514 kJ Châtelier'...

A: Given- 2CO2<->2CO+O2.      ∆H=-514KJ

Q: Determine AG for the reaction: 2C0(g) + 2H2(g) → CO2(g) + CH4(9) AH =-247.3 kJ/mol AS -256.5 J/mol K...

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Q: It is the study of the heat or energy involved in physical and chemical changes. Thermodynamics The...

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Q: The burning of 50.2 g of SiH 4 (MW= 32.8)at constant pressure gives off 3790 kJ of heat. Calculate A...

A: The reaction in which heat is released is known as exothermic reaction.  The negative sign indicates...

Q: 4. Producer gas from bituminous coal (see table below) is burned with 20% excess air. Calculate the ...

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Q: Determine the molal analysis of the products when octane (C8H18) is burned with 200% theoretical air...

A:     Given :      The combustion when octane is burned with 200% theoretical air and    The  Pressure...

Q: 2. Calculate the mass density of air at the surface of the Earth using the ideal gas law and assumin...

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Q: A solution contains 3.0 mg of Fe?*/ liter. The Fe2* is converted into a complex with 1,10-phenan- th...

A: It is an example of Lambert Beer law   Here we need to find the absorptivity and molar absorptivity ...

Q: Indicate the oxidation state of the underlined element in the following species. Show all pertinent ...

A: The oxidation state of an element can be explained as the charge acquired by that element in the giv...

Q: Which of the following structural formulas represent identical compounds and which represent constit...

A: Answer: Compounds those have similar molecular formulas but different structural formulas are called...

Q: MeO2C, NaOMe MeO,C CO,Me HTOME OMe NaH Meo, OMe OMe OMe NH2 NH,OAc NaCl, DMF H+ -OMe NaBH;CN H2O, A ...

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Q: calculating the concentration of acid in each buffer solution show in the second picture

A: Total volume of solution = 10 mL (for all samples) Concentration of acid in each buffer can be calcu...

Q: Which of the following will produce an oxidation product with KMnO4 that is insoluble in NaOH?

A: Organic reaction mechanisms:

Q: rave-like properties. Determine the waveler by an electron moving at 10 ms-1.

A: Mass of electron(m) = 9.10×10-31 kg Velocity(v) = 10 m/s Using De-broglie wavelength,  Wavelength(L)...

Q: 4. Why do they put magnesium rods in a steel hot water heater? (Hint: Think about gglyanized steelLI

A: Q4)

Q: The gas phase reaction A+B - C has a rate law which is 2nd doubled, the reaction rate would be incre...

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Q: A 7.50 g of solid compound RED was dissolved in 100 g water. The freezing point of the solution was ...

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Q: w electron reorganization

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Q: In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used t...

A: When hot metal is poured into the calorimeter, the metal releases heat, and the water and calorimete...

Q: Carbon's atomic number is six. What does that tell us about any carbon atom?

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Q: Using the following data, calculate the lattice energy of calcium chloride: Ca2+(g) + 2Cl– (g) → Ca...

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Q: If 3830 J of heat is added to a calorimeter containing 75.40 g of water, the temperature of the wate...

A: Given,  Amount of heat added to calorimeter containing water = 3830 J  Mass of water = 75.40 g  Init...

Q: Write balanced equations for each of the processes, choosing from the following substances as reacta...

A: Balancing equation:

Q: Example 1.6-2. - Saturated steam at 99.63°C condenses on the outside of a 5-m long, 4-cm-diameter th...

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Q: 1.) What are the oxidation states of the atoms in the following complex ions: (a) CO, (b) Cd(OH),, (...

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Q: A certain liquid X has a normal freezing point of 5.90 °C and a freezing point depression constant K...

A: Freezing point of solvent is greater than freezing point of solutions

Q: Calculate the amount of heat needed to melt 147. g of solid benzene (C,H) and bring it to a temperat...

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Q: You will need to prepare 700mL of Phosphate buffer pH 5.8 by combining the 0.2M Phosphate Monobasic ...

A: Given: pH = 5.8 Volume of solution = 5.8 concentration of NaH2PO4 = 0.2 M Ka2 of H3PO4 = 6.2*10-8  

Q: How is the term "organic" used among farmers and food stores today?

A: Organic chemistry is branch of chemistry in which we deal with carbon containing compounds.

Q: kJ The enthalpy of vaporization of Substance X is 9.00 and its normal boiling point is 104. °C. Calc...

A: Given-> Enthalpy of vaporization = ∆H = 9.0 kj/mole                                              ...

Q: How do we keep relative supersaturation low by controlling solute concentration?

A: ANSWER:-Option-3 is correct. 3.Concentration should be lower.  

Q: Check Your Understanding on Crystal Structure 1. Differentiate crystal structure, crystal system, an...

A: A crystal structure is made of atoms. A precious stone cross section is made of focuses. A precious ...

Q: Show how the reactions take place. Concert the ff condensed formula into structural formula. 1. снЗ-...

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.