10) Calculate the moles of magnesium ( Show your calculation

Q: What is the mass percent of P in H3PO4? Show your calculations please.

A: Percent mass of an element in a compound can be calculated by using the following formula:

Q: The standard enthalpy of combustion, AH,of graphite is -393.51 kJ mol 1. Calculate the change in sta...

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Q: Consider the following chemical transformation: The transformation takes place via two sequential p...

A: PERICYCLIC REACTIONS

Q: The diagram represents the equilibrium state for the reaction X,(g) + 2 Y(g) = 2XY(g) Assuming the v...

A: Given reaction at equilibrium stage is :  X2 (g) + 2Y (g)  <--------------> 2XY (g)  Volume of...

Q: Which of the following is the most basic solution (highest [UH ])? O pH 12 %3D O pOH = 1.0 o [OH] = ...

A: 1) pH=12 we know, pH + pOH = 14 pOH = 14 - 12 = 2

Q: Only one of the following changes will shift the equilibrium of this reaction left, favoring reactan...

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Q: For items 1 and 2: 4NH3 + 302 6H2O + 2N2 1. What is the mole ratio of NH3 to H2O? 2. What is the mol...

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Q: A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gas...

A: The sign convention for heat flow are as follows: When the heat flows into the system, a positive si...

Q: 2. Draw a stepwise mechanism for the following reaction. Use curved arrows to show electron flow. In...

A: Deprotonation of Acetals:

Q: Calculate the Equillibrium constant at 25 Degrees Celsius for the following Reaction: From the data ...

A: We have to find equilibrium constant from the given data. Temperature = 25°C or 298 K

Q: (CH,(CH.),CH;) CH; reacts with gaseous oxygen gas (0,) to produce gaseous carbon dioxide (Co,) and g...

A: We first need to determine the limiting reagent. After determining the limiting reagent, we can calc...

Q: Calculate the volume in liters of a 3.20 M KCl solution to obtain 0.25 mol of KCl. Express your answ...

A: given, the molarity of the solution = 3.20 M moles of KCl = 0.25 mole

Q: For the following descriptions of molecules, draw the Lewis structure (showing all atoms, lone pairs...

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Q: 2. Calculate the solvation free energy AG of Mg using the Born theory. Given that the ionic radius o...

A: Solution -

Q: 35 34.9689 75.77 Chlorine 37 36.9659 24.23

A: Atomic mass is the mass of an atom. Atomic mass is sum of protons and neutrons.

Q: s pCl fe

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

Q: The molar heat of combustion, A H;, of methane is -890.7 kJ mol1. If 0.0500 moles of methane is comb...

A: Given,  Temperature, T = 20°C  Molar heat of combustion, ∆H°c = - 890.7 kJ/mol

Q: Why does the presence of solute in a solution lower its freezing point?

A: Freezing point is the temperature at which a liquid freezes and the solid and liquid phases are in e...

Q: 2.3 OH OH Он

A: Step 1.  The reaction starts with 3-3 sigmatropic shift  3-3 sigmatropic - the 3-3 bonds is formed a...

Q: i. The ionization energy of fluorine (F) is ~1700 kJ/mol, while the ionization energy of difluorine ...

A: Ionization energy is the energy required to eliminate one electron from the outer most shell of gase...

Q: For the following descriptions of molecules, draw the Lewis structure (showing all atoms, lone pairs...

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Q: Name the highlighted chemical group in each molecule. Lewis structure name of highlighted group :N=C...

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Q: Decreasing the temperature of the reaction CO (g) + ½ O2 → CO2 (g) favors (A) (B) Products Reactants

A: The reaction of carbon monoxide with oxygen is an exothermic reaction.

Q: For the following two compounds, the given names do not correctly follow IUPAC naming conventions. F...

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Q: i. The first and second ionization energies of 02 are similar to each other at ~1200 kJ/mol, while t...

A: N2 has MO diagram depicted on the left side while O2 and F2 have the MO diagram depicted on the righ...

Q: LOCH3 CH;OH (+ CH3OH2 + 1°) LOCH3 CH;OH (+ CH3ОН2 +19)

A: The SN1 and SN2 are the nucleophilic substitution reactions where SN1 is unimolecular nucleophilic s...

Q: In separate titrations, equal volumes of 0.1 M HCI and 0.1M HC,H3O2 (weak acid) are titrated with 0....

A: Given: Equal volumes of 0.1 M HCl and 0.1 M acetic acid is titrated against 0.1 M NaOH.

Q: 2Al(s) + 3I2(s) > 2AlI3 If 7.5 moles of AlI3 is consumed, then how many moles of I2 is needed? *Use ...

A: Aluminum reacts with iodine to form aluminum iodide. The equation for the balanced chemical reaction...

Q: You are provided with several jelly desserts prepared from Greggs Jelly crystals. The jelly desserts...

A: A question based on analytical process that is to be accomplished.

Q: III. Experimental Data Table 3b.1. Observation on determination of melting point of unknown A. Appea...

A: The percent error is calculated using the formula: Percent error=Actual value-theoretical valueActua...

Q: TRUE OR FALSE: Metals at the lower position in the Ellingham diagram (ex: Aluminum Magnesium and Ca...

A:     Statement : Metals at lower position in the Ellingham diagram , are not stable and easily forms ...

Q: Ammonia (NH,) chemically reacts with oxygen gas (o,) to produce nitric oxide (NO) and water (H,0). W...

A: Given data is as follows: The mass of ammonia given = 1.2 g The mass of oxygen gas consumed = ?

Q: Calculate the number of nitrogen atoms in a 120.0 g sample of dinitrogen tetroxide (N,04). Be sure y...

A: Mass of nitrogen dioxide (N2O4) = 120.0 g  Number of nitrogen atoms = ? 

Q: Calculate the mass of ammonia (NH3) that contains a trillion (1.0 × 102) hydrogen atoms. Be sure you...

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Q: Calculate AH and AE for the following reactions at 25 °C. Use standard enthalpies of formation from ...

A: ∆Horxn = ∆Hoproduct - ∆Horeactants    ∆E = ∆H - ∆ngRT         

Q: Name types of gels (sieving matrix) that may be used for gel filtration chromatography and discuss t...

A: The types of gels for gel filtration chromatography include, Dextran Polyacrylamide beads/ agarose ...

Q: Which of the following statements about acids is true? O For a polyprotic acid, the first H* dissoci...

A: Among the given statements ,first statement is false as the first dissociation constant of a polypro...

Q: Aqueous hydrochloric acid (HCI) reacts with solid sodium hydroxide (NAOH) to produce aqueous sodium ...

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Q: 51.0 g of Y(g) (molar mass = 28.32 g/mol) is placed in a 0.617 L flask for the following reaction to...

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Q: mole ratio

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Q: A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gas...

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Q: A sample of solid NH,NO3 was placed in an empty container. It decomposes according to the following ...

A: Ammonium nitrate decomposes into nitrogen oxide and water. The equation for the balanced chemical re...

Q: 2- Calculate the final pressure of a sample of gas that is changed at constant temperature to 14.3 L...

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Q: TRUE OR FALSE a. It requires more energy to break N-N bond (N2O4) than to break the N-N bond in N2 ...

A: The strength of the bonds depends upon their bond energy . As the number of electron pairs increase ...

Q: (CH,(CH,),CH,) reacts with gaseous oxygen gas (0,) to produce gaseous carbon dioxide (CO,) and gaseo...

A: Limiting reagents:

Q: In a multi-step reaction pathway, the step is the rate-limiting step. (A) (B) Fastest Slowest

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Q: Procedure: Set-up your 250 mL 2-necked round bottom flask as shown in Figure 8.3. Attach the thermom...

A: Sodium hypochlorite, household bleach used as a disinfectant. It is used as an oxidizing agent for t...

Q: If K, for HCN is 6.2 x 10-10, what is K, for CN ? O 6.2 x 104 O 6.2 x 10-10 O none of these O 6.2 x ...

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Q: Question 4 - - For the following two compounds, the given names do not correctly follow IUPAC naming...

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Q: 5. Draw in Line and Angle notation the following molecules: a) CH30(CH2)2C(CH3)3 b) (CH3)2CCHCH3 c) ...

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

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.