Calculate the ratio of vacancies to the number of atoms in copper for the following conditions: Qv=20000 cal/mol T=25C Calculate the ratio of vacancies to the number of atoms in copper at 100C. How many times more vacancies are there at 100C than there are at 25C.

Q: Calculate the value of the equilibrium constant, Ke, for the reaction Q(g) + X(g) 2 M(g) + N(g)…

A: Invever the first equilibrium reaction.Explanation: when an equilibrium reaction is inverted, the…

Q: Which one of the following represents an impossible set of quantum numbers for an electron in an…

A:

Q: reaction HCl(aq) + H₂O(1) Cl(aq) + H₂O* (aq) Nỉ (»9) + 6NH,(@q) - Ni(NH,), (4) A1³+ 3+ (aq) +…

A: According to the Lewis acid-base theory, Acids: According to the Lewis theory, an acid is a…

Q: 3. Using the same calorimeter used in the previous question, a student mixed 180.0 mL of 2.50 M HNO3…

A: Since you have asked a question with multiple subparts, we will solve the first three subparts for…

Q: Draw the chain conformer of a) the most stable conformer of isopropylcyclohexane b) the most…

A: The chair conformer of Cyclohexane is the most stable conformer.We have to draw the stable conformer…

Q: Which of the following is chiral? CH3CHCH(CI) ONH₂CH₂COOH O(CH3)2C(NH2)COOH NH2CH(CH3)COOH C(CH3)4

A: A carbon will be the chiral if it is attached with four different groups. If it does not contain the…

Q: Which dot structure correctly shows the valence electrons in boron? BBB

A: • Lewis symbol:Lewis symbol diagram is constructed by Putting dots around the element these dot…

Q: An element consists of 0.19% of an isotope with mass 135.907 amu, 0.25% of an isotope with mass…

A:

Q: Bismuth-213 isotope (213Bi ) undergoes alpha decay which is also called alpha emission. a) Write the…

A: The alpha particle is nothing but a helium ion with a +2 charge.

Q: Write the formulas for the following ionic compounds. Please show the cation and polyatomic ion…

A: Given question related to writing formula for ionic compounds.

Q: Natural boron has a density of 0.128 x 1024 [at / cm³ ] and Cross section 5₂ = 764 [barns] and 0₂ =…

A: We have found out the microscopic cross section for absorption, for scattering and for total cross…

Q: a) Draw Lewis structures for each of the compounds below. Be sure to show all bonding and…

A: We have find out the Lewis structure and geometry of the given molecules.

Q: a Draw a structure for the product of the acid-base reaction below. :0: + BF3

A: Given is acid-base reaction. reactants are tetrahedrofuran and boron trifluoride.

Q: Name the following compound. S P Br PUEDES

A:

Q: Write the products of the following acid-base reaction. BH3 CH₂OCH 3 ?

A: Given reaction is acid-base reaction. The reactants are borane and dimethyl ether.

Q: Consider the reaction NH4HS(s)⇌NH3(g)+H2S(g) At a certain temperature, Kc=8.5×10−3 . A reaction…

A: The reaction quotient (Q) is calculated using the same formula as the equilibrium constant (Kc), but…

Q: What is the pH of a buffer that is 0.20 M HF and 0.085 M KF? pKa = 3.15?

A: Answer:Buffer solution is a type of solution that resists the change in its pH on adding small…

Q: How many monochloro substitution products are produced when the alkane below is chlorinated?…

A: The number of monochloro substitution products produced in the chlorination of the given reactant =…

Q: For each of the following chemical symbols, determine the number or element symbol that goes in the…

A: For each of the following chemical symbols, determine the number or element symbol that goes in the…

Q: Balance the following chemical equation (if necessary): NH3(g) + O₂(g) → NO(g) + H₂O(g)

A: A chemical equation is balanced if each side of equation has the same number of atoms of a given…

Q: Identify the conjugate acid for each base. conjugate acid of H₂PO4: conjugate acid of S²- :…

A:

Q: 24. Which of the following substances is expected to have the highest molar heat of vaporization…

A: It is the heat energy required to convert 1 mole of a substance from its liquid state to the gaseous…

Q: Calcium is a major component of human bones. In the absence of Calcium which of the following…

A:

Q: 2200 2000 888 d N 2924.98 908.67 +' d ធ 8 ស ន 2957.69L 2856.13 ព 80 1641.22 1458.57 991.67 1378.68…

A: The question is related to IR spectra.IR spectra deals with the identification of functional groups…

Q: What is the number of molecules in a 2.89 mol sample of NH, NO,? number of molecules:

A: The formula to calculate the number of molecules from moles is :=> number of molecules = moles x…

Q: Draw cis and trans 1,2-dichloroethylene (C2H2Cl2) and predict their relative energies

A: The cis-trans isomerization is a type of stereoisomerism. The molecule which contains a double bond…

Q: la How (11 many HNMR and CNMR in these compounds

A: NMR spectroscopy deals with study of nature and behavior of NMR active nucleus in external magnetic…

Q: fill in the table

A: We are given with different elements or ions and have tell the no. of protons, electrons and…

Q: A metal whose threshold frequency is 2.07×1015 s-¹ emits an electron with a velocity of 7.03x105 m/s…

A: According to photoelectric effect,energy of radiation = threshold energy of metal + kinetic energy…

Q: Which of the 4 reactions would feature an equilibrium constant greater than 1

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Q: Fill in the missing information: symbol Ge atom or ion? check all that apply neutral atom neutral…

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Q: Click on the atom with the highest negative charge in each of the following bonds. In the case of a…

A: When a covalent bond is formed between atoms of different electronegativity then there is…

Q: Read the following measurement to the correct number of significant figures. 0 cm 2 1) 46 mm 3 2)…

A: Significant figures are defined as the number of digits which is required to give the accurate…

Q: [13] The reaction 2NO(g) + Cl₂(g) → 2NOCI(g) was studied at -10°C. Given the following initial rate…

A:

Q: What is the symbol of an element that has a half-filled 4p level 1) Te 2) As 3) Sb

A: Elements in the periodic table have different types of symbols and the symbol is the alphabet which…

Q: chemist adds 1.35 L of a 1.72 mol/L sodium thiosulfate (Na₂S₂O3) solution to a reaction flask.…

A:

Q: Draw structural formulas for the products of the reaction shown below. CH3 CH3CH₂CH₂C-0- CH3 + HI…

A: Ether hydrolysis refers to the chemical reaction in which an ether molecule is cleaved or broken…

Q: reaction CH₂ CH₂OH (1) + 30, (g) 200₂ (g) + 3H₂O(g) FeSO₂ (aq) + PbCl₂ (aq) → FeCl₂ (aq) + PbSO₂ (s)…

A: In a Rxn , When two or more substances combine to form a new substance then this type of reaction is…

Q: Name these aromatic compounds properly. N02 a) b) OH

A: Benzene ring is taken as parent.The ring is numbered so that the substituent gets lowest possible…

Q: 15. The overall reaction for the decomposition of acetone is: 2(CH3)2COC₂H₂ + 2CO +2CH4 If the…

A:

Q: Identify the different functional groups in the following molecules using names from the table…

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Q: Draw the structure that best corresponds to each name: 3-ethyl-2,2,3,5-tetramethylhexane…

A: Draw the parent carbon chain based on number of carbon atoms using root word.The substituents are…

Q: A general chemistry student isolated ciguatera toxin (a poisonous polyether produced by the…

A: Given,mass of ciguatera toxin = 192.9 mgmass of cyclohexane ( C6H12 ) = 3.397 gFreezing point of…

Q: 11. What is the expected product of the reaction shown? C (b) 1. CH₂ONa 2. H₂O OH OH ? (c) a.a (d)…

A: Given reaction is epoxide ring opening reaction.Reactant is epoxide and reagent in base.

Q: 13. Copper has an atomic radius of 128 pm. Calculate the density of the hypothetical forms of…

A:

Q: A solution is prepared by dissolving 120 g KMnO4 in 2L of water at 25oC. The final volume of the…

A: Answer:Molar mass of KMnO4Universal gas constantDensity of water at 250CAlso,

Q: For the system, N2O4 (g) = 2 NO2 (g), when the volume of the system is decreased, A. The number of…

A:

Q: LIST ALL THE 3D ELEMENTS OF THE SYMMETRY PRESENT IN BIPHENYL

A: The elements of symmetry are the operations applied on molecule which maintain the spatial…

Q: 2.16 Write each of the following in scientific notation with two significant figures: a. 5 100 000 g…

A: Standard scientific notation represents a number as a factor multiplied by a power of 10.Steps to…

Q: Suppose a 0.040M aqueous solution of oxalic acid (H2C2O4) is prepared. Calculate the equilibrium…

A: Given,Molarity of oxalic acid [ H2C2O4] = 0.040pKa1 = 1.25pKa2 = 3.81

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.