1. How many moles of Ca are there in a sample that contains 7.63x10²² calcium atoms? moles 2. How many calcium atoms are there in a sample that contains 1.81 mol of Ca? atoms

Q: Draw the structural formula for these compounds, clearly showing all aspects of stereochemistry. 1.…

A:

Q: The process in which methylisonitrile is converted to acetonitrile was found to follow first order…

A: First order reaction kinetics is the one in which the rate of reaction depends only one of the…

Q: 1. Give an example of a cation AND an anion that would be isoelectric with Xe. Be sure to include…

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

Q: Find the molar solubility of calcium fluoride in a solution containing 0.70 M Ca(NO3)₂(aq). a.…

A: Check the Ksp value for CaF2 and using that find out molar solubility

Q: (k) 25 °C MeOH Br Draw the major product(s) of the reaction. Draw Your Solution Draw the minor…

A: In this question, we will draw the structure of major and minor products. This is substitution and…

Q: Need help with this one: Give at least three (3) specific reactions (ie. with organic reactant's and…

A:

Q: C2H5Cl has an enthalpy of vaporization of 26.4 kJ/mol. How much heat is released from 10.0 g of…

A: The enthalpy of vaporization for C2H5Cl = 26.4 kJ/mol

Q: (a) Using the information given in Sections 3-6 and 3-7, write the products of the radical…

A:

Q: nor nitrogen, and 61.18 % chlorine by mass. What is the empirical formula for this compound? To…

A: Empirical formula can be calculated using empirical table.

Q: a-Lipids are organic compounds found in every type of plant and animal cell. They always contain the…

A: Lipids are a broad category of chemicals that are mostly nonpolar in nature. This is due to the fact…

Q: In the following: Al³+ (aq) + 3 e Al(s) E° = -1.66 V Cr³+ (aq) + 3e →→ Cr(s) E° = -0.74 V What is…

A:

Q: Consider a cell whose Nernst potential is 0.50 V. If the cell resistance is 7.50 ohms and a current…

A: Overpotential is the measure of excess potential required to derive a reaction from its…

Q: (a) (b) ОН CH3

A:

Q: 14. Write the equilibrium expression for the following reaction ZnCO3(s) ZnO (s) + CO 2 (g) 15. A…

A: ♦ The equilibrium expression involves the ratio of equilibrium concentration of product to the…

Q: ✔ Preview File Edit View Go Tools Window Help Q Search U2HW5.pdf Page 1 of 2 372 U2HW5.pdf H CH3…

A: Give many confirmation of isomers select most stable and least stable .

Q: Need help with this Propose a preparation reaction for the formation of CH3NHCH2CH3 from organic…

A: Organic chemistry is branch of chemistry in which we deal with organic reactions. Organic reactions…

Q: Calculate the concentration of 12 solution saturated with Agl Eº = that gives a potential of a…

A:

Q: Draw the structure of the following molecules

A:

Q: The entropy of vaporization for a certain organic compound is 28.1 J/Kmol, and the boiling point is…

A: given data entropy of vaporization 28.1 J/kmol boiling T=51.7 ;c find out enthalpy of vaporization

Q: KJ/MOT c) 45.8 kJ/mol d) 50.7 kJ/mol 9. Using the appropriate half-cell reactions, and assuming 7. -…

A:

Q: Find Cas/aT) in terms of measurable. Properties CP-V-T)

A:

Q: HO name of this compound? ethoxyphenol ОС

A:

Q: Benzene was reacted with chloroethane in the presence of a Lewis acid catalyst to form Compound A.…

A: Formation of (A)  Benzene react with alkane in the presence of lewis acid to form alkyl benzene .…

Q: 11. Using the Debye-Hückel limiting law, calculate the value of the mean activity coefficient at…

A: d is correct answer. see below

Q: 25.00 mL of 0.041 32 M Hg2(NO3)2 were titrated with 0.057 89 M KIO3. Hg++ 2103 →→ Hg₂(103)2(s)…

A: Since you have asked a question with multiple sub-parts, as per our company guidelines we are…

Q: 20 grams of ice initially at -15◦C is placed on top of 100 grams of 350◦C solid gold in a thermally…

A:

Q: current of 2.505 A deposits 1.371 g of a metal M from a solution that contains the metal ion M²⁺ in…

A: Given, current (i) = 2.505 A Time (t) = 30 × 60 = 1800 s Mass = 1.371 g  Using Faraday's law,  Mass…

Q: The chemical formula for garnet is MgAl-(SiO.). What is the mass in grams of garnet that are in…

A:

Q: Which equation best describes the average rate for the reaction shown? A(aq) + B(aq) → C(aq) + D(aq)…

A: Rate of reaction :-  The decrease in concentration of reactants with time or increase in…

Q: What is the visual evidence when arabinose reacts with Bial's Orcinol test? blue solution muddy…

A: The correct answer is given below

Q: Which type of refrigerant is the most environmentally friendly but dangerous to human health? a. R22…

A: Which type of refrigerant is the most environmentally friendly but dangerous to human health?

Q: Benzene, C6H6, has a cyclic structure where the carbon atoms make a hexagon. The electrons in the…

A: given data  benzene wavelength = 260 nm m=3 and m=4 find out diameter

Q: Need your help for this: Show the reaction mechanism for the formation of a. RCONH2 from the…

A:

Q: For the reaction shown, write out the mechanism using the curved-arrow notation. Select Draw Rings…

A: When the halogen is attach to alkane then the halogen acquires partial negative charge and the…

Q: C₂H5Cl has an enthalpy of vaporization of 26.4 kJ/mol. How much heat is released from 10.0 g of…

A:

Q: Propose the relative ratio and chemical structures of the acid form and conjugate base of the…

A:

Q: . Which one of the following atoms has the largest radius? S, F, Cl, or O 2. Of the following…

A: Atomic radii is distance between the central of the atom and outermost electron present in valence…

Q: 23. Write the functional groups for the following spectra (1H-NMR and FT-IR) YAN 2930 cm¹ 1650 cm…

A:

Q: Consider molecules with more than one chiral center. Consider 2,3-dyhdroxybutanoic acid. a. How…

A:

Q: /Explain how the two vitamins below reacts with water.Ensure you use the following polar,non-polar…

A: The polarity of molecule  decide its solubility more polar molecules are more soluble in  water .

Q: Consider the reversible reaction at 2000°C, 2NO(g) + O₂(g) + N₂(g) If the system initially contains…

A: Chemical equilibrium is defined as the stage at which both reactant and product are in equilibrium.

Q: Calculate the molar mass for each of the following compounds: CH₂ g/mol (a) cyclopropane, CH₂ Molar…

A:

Q: identify all Chiral centers, give R/S designations and indicate if the compound is optically active…

A:

Q: Which of the following reactions is use to identify the sugars by the structure of the crystals?…

A:

Q: Question 3 Look at sample problem 19.14 in the 8th ed Silberberg book. Make sure to carry additional…

A: The dissociation of AgBr(s) and formation of Ag(S2O3)23-(aq) equations are: AgBr(s) ⇌ Ag+(aq) +…

Q: 8. A catalyst is used in a fuel cell to do what? a. Lower the activation energy of the reaction by…

A: Activation energy can be defined as the minimum amount of energy that must be provided to reactants…

Q: If the value calculated in question 20 had been greater than the theoretical value, select from the…

A: If a theoritical value does not match with actual value, there could be multiple source of error.…

Q: Propose a structure for the starting material of the below reaction scheme, and answer any follow-up…

A: Unsaturated compound undergoes ozonolysis reaction in presence of ozone gas and gives carbonyl…

Q: Draw a resonance structure, complete with all formal charges and lone (unshared) electron pairs,…

A: In this question, we will draw the structure of the resonance structure for aniline after given the…

Q: discuss  on orbital quantum number.

A: There are four quantum numbers to specify the position of electron in an atom: principal quantum…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.