Estimate the density of calcium oxide (rock salt structure), knowing that the ion rays are 100 pm and 140 pm for calcium and oxygen, respectively.

Q: Calculate the volumes of air and hydrogen gas at 17 C and 100 atm pressure that are necessary to…

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Q: (b) How does application of microwave in chemical reactions make it 'greener'?

A: Answer -

Q: Write the balanced chemical equation for conversion of Al(s) to KAl(SO4)2·12H2O(s) in aqueous…

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Q: Ozone is most depleted in Antarctica although very few people live there. Scientists believe that…

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Q: Ph Q ۱۱۱Ph OH но со

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Q: number of CO molecules

A:

Q: Use Scenario 2C. What is the competitive price of a permit to emit 1 cubic foot of carbon monoxide?

A: Scenario 2C. What is the competitive price of a permit to emit 1 cubic foot of carbon monoxide? How…

Q: Enlist and explain the ores of Beryllium and methods of production of Beryllium

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Q: What volume of acetylene can be obtained from the 36 grams of Calcium Carbide under standard…

A: Given data: Mass of Calcium carbide = 36 g Formula used: P V = n R T

Q: Describe the role of(i) NaCN in the extraction of gold from gold ore.(it) SiO2 in the extraction of…

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Q: Why arsenic 3 is more toxic than arsenic 5? Relate its chemical structure.

A: Please find your solution below : Arsenic toxicity is a medical condition which occurs because of…

Q: what is the mass percent of water in ca(no3)2・4h2o?

A: The molar mass of Ca(NO3)2.4H2O is 236.146 g/mol and the molar mass of water is 18 g/mol. The molar…

Q: Describe the oxidising action of potassium dichromate and write the ionic equations for its reaction…

A: As, Potassium dichromate is powerful oxidising agent in acidic medium.  And in Presence of dilute…

Q: Describe the origins and behavior of sulfur oxides and nitrogen oxides as air pollutants, including…

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Q: P3.1: In the atmosphere, molecular oxygen is photochemically decomposed as follows: 02+hv0(D) +…

A: “Since you have posted a question with multiple sub-parts, we will provide the solution only to the…

Q: Cu(k) + HNO3 → Cu(NO3)2 + NO2(g) + H2O(s) at 735 mmHg pressure at 28 ˚C, 4.95 cm3 of copper (d= 8.95…

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Q: Suppose you wish to calculate the mass of sulfuric acid that can be obtained from an underground…

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Q: Using the table of the weak base below, you have chosen Pyridine as your weak base in the buffer…

A: Given: Buffer solution of weak base pyridine (assuming B) and its conjugate acid HB+. pH of solution…

Q: A student investigated the stoichiometry of the nickel (II) nitrate - sodium sulfide - water system…

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Q: 2 V2O5 + 5 Si → 4 V + 5 SiO2 Given the above balanced equation, calculate the number of grams…

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Q: A piece of an imaginary element (called Imaginium), with dimensions 1.2 mm x 1.2 mm x 1.2 mm, has…

A: Volume of piece = 0.12 × 0.12 × 0.12 cm3 = 0.001728 cm3 Volume of the imaginary element which…

Q: Explain the action of TiO2 as a photocalyst during wastewater treatment

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Q: The tropospheric processes discussed in this chapter cannot be considered as independent reactions.…

A: Disscussing the relationship between production of nitrogen oxide species and formation of acid…

Q: What are the major health concerns associated with exposure to nitrogen dioxide?

A: Nitrogen dioxide should be handled carefully. It is a dark brown to yellowish liquid. It has a…

Q: Main group elements react with oxygen to form acidic, amphoteric, and basic oxides in aqueous…

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Q: Differentiate the following and give examples: AR grade CP grade USP grade

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Q: What are some of the structural differences between quartz and amorphous SiO2?

A: A question based on solid state, which is to be accomplished.

Q: Explain why the energetics of dissolution can be different for elements in the same group?

A: Dissolution energy is defined as the amount of energy released when a solute is dissolved in a…

Q: Account for the following :(a) Glass objects from ancient civilizations are found to become milky in…

A: a) The glass is an amorphous solid and it is converted into crystalline form by alternate heating…

Q: Write the balanced chemical equation for the reaction of aluminum with iodine. Include phase…

A: The balanced chemical equation for the reaction of aluminum with iodine can be written as,

Q: Suggest the formula of the acif used to prepare ca3(po4) 2

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Q: Using the bond breaking and bond forming method, estimate the enthalpy associated with combusting…

A: Using the bond breaking and bond forming method, the enthalpy associated with combusting one mole of…

Q: Silica is utilized in the manufacture of the central processing unit (CPU) chip used in computers.

A: Silicon is used because it can be used as either an insulator (doesn't allow electricity to flow) or…

Q: 2 V2O5  +  5 Si →  4 V +  5 SiO2 Given the above balanced equation, calculate the number of grams…

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Q: Estimate the number of free electrons in magnesium when the molar mass of magnesium is 0.6355…

A: Given,  Molar mass of Magnesium = 0.6355 kg.mol-1 Density = 8933 kg.m-3

Q: (a) Which region of Earth’s crust is not involved in the phos-phorus cycle? (b) Name two roles…

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Q: Provide two reactions for rubidium which are of high importance. They could be reactions of wide…

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Q: State the physical states of the halogens at room temperature and explain the trend.

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Crystal Lattices and Unit Cell

Consider a crystal. The regular and repeating pattern of constituent particles is the most distinguishing feature of crystalline solids. A crystal lattice is formed when these particles are replaced with representative points. The three-dimensional arrangement of constituent particles is known as a crystal lattice. Unit cell is that the smallest portion of a space lattice which when repeated in several directions, generate the whole lattice. Unit cell is a building block of a lattice. It is the smallest unit of cell.