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Q: Unkhown B- mass of unknownsulfate 0.48999 maus of Empty Crucible d cover 20 - 43 289 20.9526g 0-5198...

A: Mass of sulfate=mass of barium sulfateFormula mass of barium sulfate×Formula mass of sulfate

Q: how aas work?

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

Q: How much energy (in kJ) is required to heat 17.73 g of Au(l) from 2254.1 K to 3080.2 K (this substan...

A: Here we are required to find the heat energy required from gold from 2254.1K to 3080.2K

Q: Balance the reaction, do not leave any fractions, don't leave anything blank, then answer the questi...

A: Balanced reaction can be defined as the reaction in which equal number of atoms are present on both ...

Q: The following initial rate data are for the oxidation of arsenate ion by cerium(IV) ion in aqueous s...

A: We have to find rate law and rate constant.

Q: volume

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Q: Indicate the 2 carbanions that this compound can give. Point out the most stable and explain it.

A: Carbanion is species in which carbon carrying negative charge. In carbanion, carbon atom is sp³ hybr...

Q: (a) Calculate the energy difference between the two spin states of 'H and of 13C in a magnetic field...

A: The energy difference between spin states are calculated using the equation  ∆E=γ Boh2π Bo is the ap...

Q: Two moles of an ideal gas are compressed isothermally and reversibly at 1000 C from a pressure of 10...

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Q: Iron ore is converted to iron metal in a reaction with carbon. 2 Fe2 O3 (s) + 3 C(s) →4 Fe(s) +3 CO2...

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Q: 5. Calculate the molality of a sulfuric acid solution containing 24.4 g sulfuric acid in 198 g water...

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Q: VER AS REQUIRED A. DESCRIBE THE PREPARATION OF THE FOLLOWING SOLUTIONS. Show all pertinent calculati...

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Q: The product A goes one epoxidation and  gives product B at 9:1 ratio diastereoselectivity. Now, Give...

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Q: Determine the OH- and H+ concentration and calculate the pH, pOH of a solution that is 0.70 M NH3 so...

A: Given: Molarity of NH3 solution = 0.70 M Kb of NH3 = 1.8 x 10-5

Q: The cyclobutane ring suffers from angle strain and steric strain but not torsional strain.true or fa...

A: Cyclobutane is an organic compound in which four carbon atoms are arranged in cyclic form 

Q: 12. From the data in Table 4–3 determine at 25°C: (a) The amount of heat which will be liberated whe...

A: The solution of the question is given below:

Q: Explain why the following mechanism is not plausible for this reaction. NO(g) + Cl2 2 NOCI(g) + CI f...

A: Rate law is defined as the change in concentration of reactant or product with respect to time. Rate...

Q: 47. A small amount of resin weighing 4.56g occupies a height of a 10-ml graduated cylinder equivalen...

A: Since you have posted multiple questions, the answer for first question is given below. Kindly repos...

Q: 4. Gasohol contains ethanol (C2H5OH), which when burned reacts with oxygen to produce water and carb...

A: A reaction is exothermic if heat is released ( ΔH is negative ) and reaction is endothermic if heat ...

Q: a. Name the following compounds according to systematic and common nomenclature. H N' NO2 `N' H 4 1 ...

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Q: The reaction of 49.12 g of Cr203 with 47.8 g of Al produced 18.35 g of Cr. What is the percent yield...

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Q: Explain why the behavior of H2 (positive deviation) is different from the behavior of CH4 and NH3, (...

A: A question based on intermolecular forces that is to be accomplished.

Q: a solution contains 5g of solute A is dissolved in water 250 g. use Colligative Properties to find  ...

A: Given data,Mass of solute=5gMass of water (solvent)=250g=0.250KgBoiling point of water=100oCBoiling ...

Q: 3. Calculate the mass of ethane, C2H6, which must be burned to produce 120.0 kJ of heat. C2H6(9) + O...

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Q: [2] Write a chemical equation for an equilibrium system that would lead to the following expressions...

A: Answer - (a) According to the question - The equilibrium constant( K ) expression as follows - The ...

Q: 0.0736t wheret is in days. A particular compound decays according to the equation y = ae Find the ha...

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Q: 4. What weight (in grams) of lactose (C12H22O11, MW= 342 g/mole) is required to prepare each of the ...

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Q: B. How many grams of Al2(SO4)3 would contain 1.236 × 1020 atoms of sulfur? Mass of Al2(SO4)3 = grams

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Q: 1. What are the factors affecting the solubility of solutions? Give 4 factors 2. Give 5 importance o...

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Q: Search 1 importance of exothermic and endothermic reaction in industry. Include your Reference.

A: Answer - Endothermic reaction - Endothermic reactions are chemical reactions in which the reactants ...

Q: The deep blue compound Cu(NH3)4SO4 is made by the reaction of copper(II) sulfate and ammonia. CuSO (...

A: Given: Mass of CuSO4 (limiting reagent) = 47.0 g Actual yield of Cu(NH3)4SO4 = 53.4 g Known: Molar m...

Q: Determine the OH- and H+ concentration and calculate the pH, pOH of a solution that is 0.70 M NH3 so...

A: pH of a solution is a measure of acidity of a solution. pH less than 7 indicate that solution is aci...

Q: Methodology: Make schematic diagram for the procedure below B. % SO3 determination Dry the soluble...

A: We need to make a schematic diagram for the given procedure.

Q: CH3 1.Hg(ОАC)2, Н,0, THF 2. NaBH4 (d) CH2=CH-CH2-CH-CH3 1. NaBH4 (e) CH2=CH-CH2 CH3 2. НаО 1. (CH3)2...

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Q: 1. Rank the following compounds from most to least acidic at the indicated hydrogen, and explain you...

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Q: Propane can be turned into hydrogen by the two-step reforming process. In the first step, propane an...

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Q: 2. Here are representations of a reaction: A +B> products Unshaded spheres represent A molecules. Sh...

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Q: Sodium Borohydride Reduction of Ketones Compound Melting point Structure Color Benzil Benzoin 1,2- d...

A: BENZIL M.P- 94.8 °C COLOR-yellow crystalline

Q: a what is U List of P Q suffix for PB Prefixes Q What is Q cabrini p Cabrini Porti O Mail - K O Laun...

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

Q: Correct Let's calculate the number of moles of each reactant: 1 mol CH4 1370 g CH4X = 85.4 mol CH, 1...

A: Number of moles is calculated by dividing the given mass with molecular mass.

Q: 1. Zn(Hg)/HCl 2. C12/as 3. СНЗО-/to А C 1. NANH2 1. 2(СH3)ВН/THF 2. Н202/ОH-, Н20 H 2. СНЗСН2Br 3. N...

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Q: A solution is made with 554 ml of 8.21 M HX solution and 549 mL of 6.06 M Nax solution and the pH at...

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Q: A 50.00 mi. sample of a sodium hydroxide solution is titrated with a 1.605 M solution of sulfuric ac...

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Q: write the equillibrium constant expression kc and kp

A: The given chemical reaction is a reversible reaction and the reaction is as follows: H2g + I2g ⇌  2H...

Q: Directions: Answer the questions below in relation to the following generic diagram. 1.0 C A 0.5 45°...

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Q: 7.53 Consider the following SN2 reaction: Br CN NACN DMF (a) Assign the configuration of the chiral ...

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Q: A gas is heated from 213.0 K to 398.0 K and the volume is increased from 13.0 liters to 35.0 liters ...

A: Initial pressure = 3.15 atm Initial temperature = 213 K Initial Volume = 13 Litre Gas Constant, R = ...

Q: 5. Empirical formula for C4Hsl4N2 Is. a) CH2IN b) C2H42N c) C2H2LN2 d) none of all

A: Empirical formula is the simplest whole number ratio of atoms present in a compound. Where as the mo...

Q: Consider the reactions 1. C(graphite) + O2(g) --> CO2(g) delta H xrn = -393.5 kJ 2. H2(g) + 1/2O2(...

A: Thermodynamics can be defined as the brach of chemistry that deals with heat evolved or absorbed dur...

Q: Make schematic sketches of the microstructures that would be observed for conditions of very slow co...

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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.