Question 14 Infrared radiation has lower energy than visible radiation. O True O False

Q: What amount of heat, in J, is required to raise the temperature of 150.7 g of lead by 11.9°C? The…

A:

Q: Which of the following statements describes a strong acid? (Select all that apply)     The Ka is…

A: The best statements that describes a strong acid:

Q: Re-order each list of elements in the table below, if necessary, so that the elements are listed in…

A: For Si,P,Cl order of electronegativity will be : Si<P<Cl when we move left to right in…

Q: The mineral chalcocite, Cu2S, has been mined for centuries and is one of the most profitable copper…

A: Answer: This question is based on stochiometric calculation where moles of copper needs to be…

Q: Question 31 Semiconductors are located in the periodic table on (or in) the O left side of the table…

A: Semiconductors are located in the periodic table on (or in) the   left side of the table right side…

Q: Aromatic compounds CH3C=CCH3 benzene CH3 CHCH3 Other compounds 1-ethyl-4-methylcyclohexane Reset…

A: Given : structure of compounds and name of compounds

Q: A researcher suspects that the pressure gauge on a 49.9 L gas cylinder containing nitric oxide is…

A: Answer:

Q: A scientist measures the standard enthalpy change for this reaction to be 33.3 kJ/mol. CO₂(g) +…

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

Q: 8-54 Professor Patrick Dussault (University of Nebraska at Lincoln) has developed an alternative to…

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Q: Question 5. Liquids are mixed at 20°C. H₂O (1.0 g mL-¹) CH3OH (0.79 g mL¯¹) C5H12 (0.63 g mL-¹) Br₂…

A: Given that, a tube contains 1 mL of CH3OH, 2 mL of pentane, and 1 mL of Br2. Also, given that, the…

Q: Draw structures and names for the synthetic outcomes when (R)-2-ethyl-2-methyloxirane (AKA…

A: The above given are reaction of epoxide ring with different sets of reagents.  All different sets of…

Q: Workshop extra: past paper Jan 2021 Answer all parts. (a) Considering the following aromatic…

A: Birch reduction is faster for electron deficient ring or electron withdrawing present on ring And…

Q: Calculate the enthalpy of the reaction below (∆Hrxn, in kJ) using the bond energies provided. N₂(g)…

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Q: What are the products from one turn of the citric acid cycle? Check all that apply. O CoA OGTP(ATP)…

A: What are the products from one turn of the citric acid cycle? CoA GTP(ATP) FADH2 CO2 GDP(ADP) NAD+…

Q: The atmospheric pressure on the surface of Venus is 6.84 x 10 mmHg. Calculate the atmospheric…

A: Answer: This question is based on unit conversion where we have to convert the value of pressure…

Q: A general chemistry experiment requires the use of 2.00 M HCl, which must be prepared by diluting…

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Q: The complete combustion of ethanol, C₂ H₂OH(1), to form H₂O(g) and CO₂(g) at constant pressure…

A: Given : combustion reaction statement of etanol

Q: For which one of the following is the enthalpy of the reaction the same as the enthalpy of…

A: Given reactions: A) H₂ (g) + F₂ (g) → 2 HF (g) B) Ca (s) + ½ O₂ (g) → CaO (s) C) 2 CH₃OH (l) +…

Q: In the table below, rank the molecules in order from least reduced (1) to most reduced (4). H…

A: The concept used here is from chemical binding.  Here more positive charge on carbon atom us most…

Q: The number of electrons in the nucleus of an element is called the atomic number True False

A: Given statement: The number of electrons in the nucleus of an element is called the atomic number.…

Q: Which of the following is the fastest in SN2 reaction with cyanide (CN-)? a. 1-iodo-3-methylpentane…

A: Here firstly we needs to know about the SN2 reaction.  The reaction proceeds in only one step.…

Q: (a) Et Cl 1. Excess Na BH4 2. Workup Et OH

A: Given : structure of reactant and product

Q: Which statement(s) O State functions are path independent. State functions are the opposite of path…

A: Answer: In chemistry functions has been classified into two parts: 1. State function 2. Path…

Q: 28.5 g piece of gold is heated and then allowed to cool. What is the change in temperature ( °C) if…

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Q: Calculate the effective nuclear charge on a valence electron in an aluminum atom.

A: We have to calculate the effective nuclear charge (Zeff) on a valence electron of aluminium atom.…

Q: The air over an unknown liquid is saturated with the vapor of that liquid at 23 °C and a total…

A: The question belongs to thermodynamics.

Q: Question 13 The energy of a photon is inversely proportional to its wavelength. True False

A: The energy of a photon can be calculated using the formula given below:  E = hv , h = planck's…

Q: BACKGROUND INFORMATION 2. Give the chemical reaction involved in the test for glycerol.

A: Solution 2). Given Glycerol

Q: An Arrhenius acid is a substance that dissociates into protons (H+) and an anion (A) when dissolves…

A: Acid increase concentration of hydrogen ion in aqueous solution

Q: 2. All the following are polar except A) O3 B) CIF3 C) COC12 D) D) BrO3 E) CS3²- BrO3

A: Molecule is non polar if the all bond moments cancel each other.

Q: Practice Problems: What is the hybridization of the indicated atom in the following compounds or…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Practice Problems: Indicate whether the following molecules are polar or nonpolar. (a) N₂ (b) HCl…

A: When two atoms share a pair of electrons unequally because of differences in their…

Q: A 46.4 g piece of hot iron is placed in 154.1 g of water with an initial temperature of 24.4°C. The…

A:

Q: A ball has a kinetic energy of 5.90 kJ. If the ball has a mass of 120.0 g, how fast is the ball…

A: Given -->  kinetic energy (K.E) =  5.90 kJ  mass of the ball(m) = 120 g  velocity of the ball (v)…

Q: The orderly pattern of the atoms in a crystal influences many properties apart from its external…

A: It refers to the ability of the crystal to split in a certain direction along its surface.

Q: 1.In what PEL are the Valence electrons for an atom of lead found?   2.How many unpaired electrons…

A: 1. Atomic number of lead = 82  Its condensed electronic configuration is  [Xe] 6s2 4f14 5d10 6p2 Its…

Q: How many grams of silver can be plated onto an object in 7.46 minutes at 3.07 A of current? Ag¹(aq)…

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Q: After balancing the following reaction in acidic conditions, how many H+ ions are needed and on what…

A: Oxidation: It involves increase in oxidation number. Reduction: It involves decrease in oxidation…

Q: Question 10 ( The solubility of KBr is 87 g per 100 g of water at 80°C and 60.0 g per 100 g of water…

A: We need to use the given solubility at both temperature to determine the amount of solute dissolved.…

Q: Rank the following solutions with the most acidic at the top and the most basic at the bottom at…

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Q: For the following combustion reaction CH₃COCH₃(l) + 4O₂(g) → 3CO₂(g) + 3H₂O(g) ∆H = -1.79 × 10³ kJ…

A: Negative sign of enthalpy change indicates that heat is released.

Q: Identify the correct product A to E of the following reaction diy Pt/C (10 mol %), H₂(g) (5 atm)…

A: The starting substrate has an alkene and alkyne group and a aryl group and ketone. The reagent is…

Q: which molecule is more symmetrical ?  how they distinguish in IR with fact ( without looking at…

A: IR is known as infrared spectroscopy.We have been asked which molecule is more symmetrical out of…

Q: How many calories are in 9201 J ? (1 cal = 4.184 J)

A: Given -->  9201 J  We know that  1 cal = 4.184 J

Q: 7.  Calculate number of grams required to prepare: a.450.0 mL of a 1.2M KBr solution. b.1.50 Liter…

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Q: Which of the following elements has the smallest first ionization energy? A) S B) O C) Si D) Sr E)…

A: Ionization energy is the minimum amount of energy required to remove an electron from a valance…

Q: Draw the structure of base pairing between 2 compliantly bases. In DNA. Show H bonding.

A: We have been asked to draw the structure of base pairing between 2 complementary bases in DNA.We…

Q: -0 OCH 3 H3O+

A:

Q: True or False?

A:

Q: Acetylene gas, C2H2, reacts with oxygen according to the following equation. If 68 mol of acetylene…

A: From balanced reaction two mole of acetylene react with oxygen and produced 4 mole of carbon dioxide…

Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.