The unit of energy in atomic units is given by me 167'eh? (A) 1 E, 2+2 et (B) 1 E, = 167 m,eh? me 167 8,h (C) 1 E, me* 168,h? (D) 1 E,

Q: 5 g of anhydrous strontium nitrate is added to a beaker and exposed to the air. After several hours…

A: The percentage of water in hydrated sample is given as : Percentage of water = ( mass of water /…

Q: An atom of rhodium (RhRh) has a diameter of about  2.7×10−8cm2.7×10−8cm. What is the radius of a…

A: The radius of an atom is half of its diameter. 1 Å = 10−8 cm

Q: Balance each reaction and write its reaction quotient, Qc:

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

Q: 1) O, -78°C V> 2) DMS KCN H. HCN

A: Organic reaction mechanisms

Q: Given the following mass doublet values (in units of 10- u), compute the corresponding values for…

A: (1) m(C3H)-m(37Cl) = 41922.2+/-0.3 in (10-6 u) = 0.0419222+/-0.0000003 So 3m(12C)+m(1H)-m(37Cl) =…

Q: n an old movie, an archeologist is shown sprinting off with a gold statue. If the volume of the…

A:

Q: 7. Is matter usually charge-neutral? How would matter be different if it were not charge-neutral?

A: Matter is neutral since they have equal number of protons(positively charged) and electrons…

Q: The unit of energy in atomic units is given by me (A) 1 E 16л* ,2+2 et (В) 1 E, 167’m,eh me 167°e,h…

A:

Q: 4. If you were given an antique piece of jewelry and you were told that it was made of solid gold,…

A: There are several tests that are used to detect the purity of gold used by jewelry manufacturers…

Q: 7 1 5.3Li +1H → 2 He+ O a. He O b. 2, 1H O C. 3 O On d. 4 4Be

A: A radioactive reaction can be balanced by summing up the atomic number and mass number on both sides…

Q: 1) BH, 2) NUOH, H,0, Na, NH, A b) D. 2) CH,on 2) NaO, 1,0, 2) NatSO, H,0

A: Alkyne reduces to Trans alkene in the presence of Na, NH3.And forms enol with BH3, NaOH. Alkene…

Q: +3Ca (OH) acs)→ 6H20(1) + Cas (POw). (s) b) +3CACOH) 2cs)

A:

Q: What are the labels on the axes of a mass spectrum? (c) Tomeasure the mass spectrum of an atom, the…

A: b) In a mass spectrum relative abundance or signal intensity is drawn as a function of mass to…

Q: you are designing a rocket engine th uses a mixture of hydrazine and water as a propellant. this…

A:

Q: Read sections 3-9, and 3-10 in Christian, 6h Ed. Use this information to answer the following…

A: In a measurement, uncertainty represents the incorrectness or error of measurement. Thie uncertainty…

Q: 99 235U + in → 2;Zr+ 135Te + 2X + ön ŽZr +

A:

Q: Dinitrogen monoxide (N₂O; nitrous oxide) is a greenhousegas that enters the atmosphere principally…

A: Isotopes possess same number of protons but differ in number of neutrons thus, they have different…

Q: (3a-101-27) Would you agree to buy 1.23 x 102 gold atoms for $27? Explain why or why not, showing…

A: The number of gold atoms is = 1.23x1021 The cost of these gold atom is = $27 The current price of…

Q: For each of the following processes, does the potential energyof the object(s) increase or decrease?…

A: The energy that objects can contain due to their position is addressed as "potential energy". This…

Q: By one estimate, an electron travels around the nucleus of an atom at a speed of 1.50 x 10^6 m/s.…

A: A) To change m/sec into km/Hr we multipy 18/5 1.5×106×18/5= 5.4×106km/hr

Q: The vitamin niacin (nicotinic acid, C6H5NO2) can be isolated from a variety of naturalsources such…

A: To find: The source of nicotinic acid which is best for use in a multivitamin tablet.

Q: Phosphorus 2 H¿O(t) + O,g) D E F H C;H12 N;(€) → N¿(g) H I„(1) → I,(g) H,O(f)

A: (D) it represent the 3D representation of saturated hydrocarbon .    (F) It  represent the…

Q: The NH4+ and NO3− ions of ammonium nitrate are held together by_____ bonds. To separate these two…

A: Ionic bonds are formed by the complete transfer of one or more electrons to the other atom, thereby…

Q: Bucks McGee, after being poisoned, is currently being treated in the hospilal antidote- the chemical…

A: Antidote compound name = Prussian Blue The molecular weight of the antidote compound = 858.9 g/mol…

Q: Part A Assume that the kinetic energy of a 1150 kg car moving at 135 km/h could be converted…

A: First we would calculate kinetic energy of car , which would be value of heat.  Then we would use…

Q: Is 1s22s22p6 the symbol for a macroscopic property or a microscopic property of an element? Explain…

A: Property of a molecule can be macroscopic or microscopic. Macroscopic property represents the…

Q: Which equation states the law of conservation of energy? O A. AE = q + w O B. E = mc- O C. E = /2mv2…

A: Law of conservation of energy: According to law of conservation of energy "energy neither be created…

Q: Complete these Heck reactions

A: The Heck reaction is the chemical reaction of an unsaturated halide with an alkene in the presence…

Q: What is the density of lithium metal in g/cm³ if a cylindri- cal wire with a diameter of 2.40 mm and…

A: Determine the radius:

Q: Con The gold fol Rutherford used in his scattering experiment had a thickness of approximately 4103…

A: Given: Diameter of a single atom = 2.9 x 10-8 cm Thickness of a gold foil = 4 x 10-3 mm = 4 x 10-4…

Q: The vitamin niacin (nicotinic acid,C6H5NO2) can be isolated from a variety of natural sources such…

A:

Q: Use data from Appendix C, Figure 7.10, and Figure 7.12 to calculatethe lattice energy of RbCl.

A: The Born–Haber cycle is purposed the calculation of reaction energies with the help of ionization…

Q: Explain the difference between molecular mass and nominal mass. Give the value of the molecular mass…

A: While calculating nominal mass a molecule the atomic mass of constituent atoms of most abundant…

Q: 25 1dentify which is E or Z 25 deity which ins Er CH,"

A: As per the CIP rules, if high priority groups are on the same side of the C=C then it is named as Z…

Q: What two pieces of evidence allowed the first calculation of me , the mass of the electron?(a) The…

A: Electron is a subatomic particle having electric charge negative.Electron has high q/m ratio than…

Q: 3. FeSO, + K,Cr,0, + H,SO, → K,SO, + Cr.(So.), + Fe,(SO.); + H,0 4. MNSO, + PbO, + H,SO, → HMNO, +…

A: Oxidation number or oxidation state basically indicate the electrons lost or gained by atom.  For…

Q: KMNO̟ + NaCI + H,SO, MNSO, + Na,SO, + K,SO,+ Cl, +

A: Let's start by assigning the oxidation states to all atoms:

Q: A fictitious element X has a molecular weight of 9.46 g/mol. If the volume occupied by one atom of…

A: We have given that the a fictitious element X has a molecular weight of 9.46 g/mole and the volume…

Q: ΔHrxn∘=− 85 kJ, ΔSrxn= 154 J/K, T= 392 K Find ΔSuniv

A: According to second law of thermodynamicsΔStotal = ΔSuniverse = ΔSsystem + ΔSsurroundings Given…

Q: length of 0.286 nm. What is its g

A: From the density formula,  d = Z×MM/NA×a3 Where,  d = density  MM = molar mass NA = Avogadro's…

Q: Given the following mass doublet values (in units of 10- u), compute the corresponding values for…

A: (1) m(C3H) - m(37Cl) = +41922.2 /-0.3 in (10-6 u) =  +0.0419222/-0.0000003 So 3m(12C) + m(1H) -…

Q: 1. Sketch and label the main parts of the mass spectrometer. 2. Give detail description about how it…

A:

Q: 2-75. A sample of rutile, an ore of titanium consist- ing principally of TiO,(s), was found to be…

A: The question is based on the concept of quantitative analysis. we have to calculate how much…

Q: Which one of the following is TRUE about AH°f for the substances given? a. AH°ffor Br2(e) = 0 b.…

A: Enthalpy of Formation - It is the reaction enthalpy of the compound in which the reaction takes…

Q: Q1. The net potential energy between two adjacent ions, EN, is represented by A В E N pn where EN is…

A:

Q: the measured EA of Na is -53 KJ/mol. What is the physical meaning of the fact that the EA is a…

A: EA means the electron affinity .  The amount of heat is released when 1 electron is added to the…

Q: Chlorine has two naturally occuring isotopes, CI-35 (approximately 75%) and CI-37 (approximately…

A: Mass spectrometry is an important tool for the determination of the molecular mass of the compound…

Q: In Raiders of the Lost Ark, Indiana Jones tried to remove a gold idol from a booby-trapped pedestal.…

A: Given : Mass of gold idol = 2.00 Kg And density of sand = 3.00 g/cm3 = 3.00 Kg/L…

Q: In the equation used to determine the energy of the particles described in question (11), E = hc/λ,…

A: The given equation is  E = hc/λ

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.