A yellow solid is either calcium chromate or potassium chromate. What would you do to tell which compound the solid is?

Q: Determine the mass, in kg, of HgO that must decompose to form 70.4 LO2 gas at STP. 2H9O(s) 2Hg() +…

A: The reaction given is, => 2 HgO (s) → 2 Hg (l) + O2 (g)  Given: Volume of O2 produced at STP =…

Q: The law of thermodynamics states that every spontaneous process moves towards greater entropy.…

A: First law:  energy can't be created or destroyed. Second law :  The entropy increases for any…

Q: What are the main components of fluoride ion-selective electrode?

A: The three main components of making a measurement at an ISE are an inner reference, or standard,…

Q: is often interpreted as a measure of the disorder or randomness of a system. It is a representation…

A: Fill in the blank

Q: Zinc lorns sulfate ions ANDDE > > > > > >

A: In Galvanic cell,  Left hand side is oxidation half.cell and right side is reduction half cell. Salt…

Q: जिोट मेट (णणेर केनंजलवेकळ +क्स गनण following.Cma • raw with farmal charge प्केक किoजकव tode ero on…

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Q: The ?sp of cadmium carbonate, CdCO3, is 1.0×10^−12 Calculate the molar solubility, ?, of this…

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Q: Explain in detail which of the following compounds (A or B) when reacted with acetophenone under…

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Q: PCI3(g) + 1. What is the equilibrium constant, Kc for the reaction PCI5(g) Cl2(g) at 400K.…

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Q: Calculate T' in Kelvin given cell-0.710 volts %3D n= 1 R= 8.314 J/molK F= 96500 C/mole electrons K=…

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Q: balanced equation for the neutralization

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Q: Balance the following equation by filling in the proper coefficients in each box below. use numbers…

A: Given, the unbalanced equation: TiBr4(g) + H2(g) → Ti(s) + HBr(g) We have to balance this equation.…

Q: For each of the equations, determine the change in the number of moles of gas, Angas . (NH,),CO3(s)…

A: A chemical reaction is represented by using a chemical equation. In a chemical equation, the species…

Q: The redox potential is measured in volts amperes O joules O ohms

A: Redox potential is also known as oxidation-reduction potential (ORP)

Q: he electron-domain geometries for th

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Q: 1. At 10.4 °C solutions of tetrahydrofuran (THF) and diethyl ether are described as being ideal over…

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Q: 9. For each pair of molecules, circle the stronger base. Use pKa values to guide your decisions. a.…

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Q: ST6D.1 (pre-exponential factor) - Determine the pre-exponential factor [in 1/(M s)] for a reaction…

A: Given-> Activation energy (Ea) = 3.9 KJ/mole = 3900 J/mole Rate constant (K) = 6.75 /M.s T = 300…

Q: Calculate the molarity of C6H1206 in solution if 4.5 g was dissolved in 50 ml of H2O.…

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Q: 3 How would you prepare this compound? More than one step is necessary. You may use any organic and…

A: The reaction given is,

Q: In a galvanic cell, a full redox reaction takes place, one half-reaction at each electrode. How is…

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Q: What is the final temperature, how much water is there, and how much ice is there if 854.0g of ice…

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Q: Identify the functional groups in the following structure. H H N. CH3 НС C. CH НО H Ester

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Q: The vapor pressure of liquid aluminum is 400 mm Hg at 2.59×10^3K. Assuming that its molar heat of…

A: we need to calculate the vapor pressure of liquid Al at 2.61×10^3 K

Q: (Q56) Consider yttrium iodate, yttrium fluoride, lanthanum iodate, and gallium (III) hydroxide:…

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Q: জट रजं अज्यलंजल Iets

A: We have to predict the Lewis structure for given compound.

Q: The enthalpy change of some reactions cannot be determined directly from calorimetric data and are…

A: Hess's law says that enthalpy change of any reaction is a fixed quantity and is independent of the…

Q: ELECTROCHEMICAL Standard Potentials: About this Simulation CELLS Gary L. Bertrand Universi…

A: Answer: Zinc is more reactive metal than iron, therefore zinc electrode will be anode and iron…

Q: 3, Consider the following reactions: Fe2+ + 6 H+ + VO43- > VO2+ + 3 H2O A, what is the oxidation…

A: The common oxidation state of oxygen in most of its compound is -2. The sum of the oxidation states…

Q: Vhat is the final temperature, how much water is there, and how much ice is there if 824g of ce at…

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Q: What is/are the product(s) of the following reaction? Draw the productis) on your file and name the…

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Q: 1) t-BUOK 2) NBS, hv Br 'N, 1 R 2.

A: Reaction : E2 elimination of alkyl iodide. Reaction 2 : Allylic bromination using NBS.

Q: Question 27 Calculate AGel in kJ/mol at 655 K given cell -0.830 volts n= 6 F= 96500 C/mole electrons…

A: Formula, ∆G° = -nFE°cell then,

Q: 3. a. Briefly explain why internal standardization method is useful in analytical chemistry?

A: A)  Internal standards are widely used in chromatography because of differences in the…

Q: 12. Predict the major product(s) of each of the following reactions AND indicate the most suitable…

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Q: 5. What is the maximum number of stereoisomers for the following molecule? Draw its enantiomer in…

A: The molecule given is,

Q: An enclosed sample of ideal gas undergoes an isochoric process at 6.24m. Its initial temperature is…

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Q: How much heat must be added to a 2-kg block of ice at -5°C to change it to water at 10°C? C of water…

A: The mass of the water sample is = 2 kg = 2000 g The initial temperature of the water is = -5oC The…

Q: Choose the most appropriate reagent(s) for conversion of ethyl acetate to acetamide. H OEt OCH2CH3 H…

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Q: 2. A sample of neon gas at 760 torr has a volume of 5.0 L and a temperature of 17°C. What is the new…

A: 2.  Given :  Initial volume = 5.0 L  Initial temperature = 17°C  Final temperature = 47°C  Pressure…

Q: Which of the following will have the greatest Ecell? Na(s)|Na+(0.1M)||Na+(1M)|Na(s)…

A: To identify: The cell with the greatest cell potential i.e. Ecell.

Q: At a certain temperature, 0.680 mol SO, is placed in a 4.50 L container. 2 SO, (g) = 2 SO,(g) +…

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Q: #17. arrange the following pure solid elements in order of increasing electrical conductivity.

A: The electrical conductivity is determined by the ease with which the electric current can be passed…

Q: mass

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Q: Calculate the mean free path for a nitrogen molecule in a sample of nitrogen at 300 K and 1.00 bar,…

A: We would use formula to calculate mean free path.

Q: Aldehyde/Ketone → Alpha Beta unsaturated Ketone

A: Reaction 1 : α - bromination of ketones using acid and bromine. Reaction 2 : Elimination using py…

Q: The graph shows a heat curve for an unidentified substance discovered by the Mars rover. What is…

A: We can determine Fusion temperature ( melting or freezing point ) and vaporization temperature from…

Q: Write the rate expression for the following reactions 1. N2e) +3H2e) 2NH3(e) 2. CO2(e) +2NH3(8)…

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

Q: Step 3: Each successive approximation uses the value from the previous approximation. 7.90 x 10-5 =…

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Q: NaCl is dissolved in water, the temperature of the water slightly decreases. Use this fact to…

A: ammonium nitrate produces lower mean minimum temperatures, and reaches them more quickly,…

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.