II II IV

Q: Calculate the amount of heat required to completely sublime 99.0 g of solid dry ice (C0,) at its sub...

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Q: Following is the structure of pyridoxamine. CH2NH2 CH2OH но. H3C N. a) Which nitrogen atom of pyrido...

A: Please find your solution below : (a) Amines are Lewis base and hence act as electron donor. The str...

Q: Standard Deviation Problem The mass of an object was recorded using analytical balance in the lab. T...

A: The mass of the object recorded in three trials is = 3.678 g, 4.988 g, and 4.541 g a) The average ma...

Q: Given that a medicine has a lethal dose of 52 mg medicine/ kg body weight, how many mg would kill a ...

A: The solution is as follows:  

Q: A student has a sample of an unknown metal solid, labelled 'metal x. The sample is shiny in appearan...

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Q: Which of the following compounds produces four monobrominated products if reacted with Br2 in the pr...

A: Given options are : a). 3,3-Dimethylhexane b). 2,2-Dimethylpentane c). 3,3-Dimethylpe...

Q: 5. Predict all possible products for the following reactions: please clearly show MAJOR product, MIN...

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Q: Industrially, nitric acid is produced by the Ostwald process, as represented by the following equati...

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Q: 3. Draw a legitimate Lewis structure for the following molecules. a. C2H6 b. CsH10 C. CH,O d. HNO3

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Q: 4. Provide the molecular formula and draw the skeletal structure for the following molecules. H. N-H...

A: The skeletal formula is also known as shorthand formula,

Q: COVALENT COMPOUNDS Covalent compounds are made from two non-metals and so don't follow the normal io...

A: Subscript number tell you how many atoms are present in the covalent compound . As  in NO2  the elem...

Q: A 2.50 gram rectangular object has measurements of 22.0 mm, 13.5 mm, and 12.5 mm. 1 cm3=1 mL. What i...

A: Given, A rectangular object measurements of 22.0 mm, 13.5 mm, 12.5 mm The mass of rectangular object...

Q: (a) Use the information given below to sketch and label a molecular exclusion calibration curve. Use...

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Q: Problem#1 1. You are task to collect gases such as N2, 02, CO2, and Ar gas. The partial pressures of...

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Q: Reforences Use the References to access important values if needed for this question. Which of the f...

A: 1) abx = axbx

Q: Given the following information about the isotopes of Titanium, calculate the average atomic mass of...

A: We know that,   

Q: TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 16) The carbohydra...

A: Disacharides are the carbohydrates which is composed of two monosaccharide that are bonded to each o...

Q: QUESTION 5 Show the balanced chemical equation for the following reaction including all possible pro...

A: alkene and alkyne are reactive in nature

Q: 6. What will happen if the pH of the following equilibrium system is increased? H*e *(aq) + 2CrO4²¯a...

A: When a reaction system in which the rate of conversion of reactants to products becomes equal to the...

Q: Part A Zinc metal reacts with hydrochloric acid according to the following balanced equation. Zn(s) ...

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Q: 10. One mole of Sulfur is 32.06 g. How many moles would be found in: a. 85.9 g of Sulfur b. 10.57 g ...

A: given 1 mole sulfur = 32.06 g

Q: 32. The illustration below graphs energy during the formation of a covalent bond. Where can you iden...

A: When we give heat or light energy to any process, then the process will be endothermic.

Q: The kinetic reaction data of the decomposition of substance S is given below. For this item, present...

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Q: a) Devise a synthesis of the target molecule 8. Simple starting materials with seven or less carbon ...

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Q: COMPLETE THE TABLE ANSWER PREDOMINANT INTERMOLECULAR FORCE IN (CH3)2 NH4 TYPE OF INTERMOLECULAR FORC...

A: If the size of the element increases, then the dispersion forces also increase.

Q: A 120.0 gram S contains how

A: The molecular formula of potassium nitrate is KNO 3 This formula shows that there are : 1 mole of p...

Q: 1 тol 197.0 g 1. X- 6.022 х1023 X 4 = 1 тol 10-10 (407.8 pm)³ × (r10 cm, 3_ 1 рт

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Q: Q/ Why is iodine saturated with the least amount of sodium thiosulfate solution?

A: The elements are arranged based on their atomic number values in rows and columns (or groups). This ...

Q: What mass of Fe(OH)3 (MW = 106.87 g/mol) will be obtained when 100. mL of 0.240 M FeCl3 (MW = 162.2 ...

A: Given,  Molarity of FeCl3 = 0.240 M  Volume of FeCl3 = 100 mL  Molecular weight of FeCl3 = 162.2 g/m...

Q: OCH3 LOH

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Q: Given: 2. The partial pressure of N2 in a mixture of gases where the total pressure is 1.00 atm Requ...

A: Given, The partial pressure of N2 is 400 torr. The total pressure of gas mixture is 1.00 atm.

Q: Match each of the following definitions to the alphabetical label provided under this chemical name:...

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Q: Но OH NH2 H2N 210 °C

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Q: Which of the following is not totally dissociated when mixed with water? a. HCl p. HBr C. HI d. HF е...

A: We know that strong acids, or strong bases, and salts completely dissociate in water. Because they a...

Q: The structure of Corticosterone is shown here. OH H3Ç НО H3C Corticosterone DOES NOT contain: an alk...

A: An ether group is not present here.  Thus correct option is c. 

Q: Perform this calculation by first converting the numbers into scientific notation and then multiplyi...

A: According to significant figures' rule, there should be no digits in the answer if we multiply one n...

Q: Study the reactions for the formation of compounds from their elements. 1. C (s) + O2 (g) → CO2 (g) ...

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Q: Consider the reaction shown below. OF2 + H2O ⟶ HF + O2 Which atom was oxidized in this reaction?  ...

A: Oxidation involve loss of electrons and reduction involve gain of electrons.

Q: 2NaClO, --> 2NaCI + 30, Reactants combine into a large one Reactant breaks apart into smaller molecu...

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Q: _K2Crz07+_H2C204 · 2H20 →_K[Cr(C204)2(H2O)2] · 2H2O +_CO2 +_H20 a) Balance the equation

A: Balance chemical equation is the chemical equation in which number of atoms both side(reactant and p...

Q: A student in Ochem proposed the following synthesis. Explain the problem with this approach and prov...

A: LDA ( lithium diisopropylamide) is a larger base .Thus it accepts the it accepts protons from less s...

Q: 7. Draw a mechanism (use arrows) for the for the formation of products when 1:bromo-2-1 methy.lcyclo...

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Q: 38. Peak areas and relative detector responses are to be used to determine the concentration of the ...

A: Chromatography is the laboratory technique for the separation and isolation of a variety of samples ...

Q: suspension and emulsion polymerization

A: In this question we have to tell about succession and emulsion. To give information about their Indu...

Q: Balance the following combustion reaction: 2C8H10N4O2 + ___ O2 -> ___ CO2 + ___ H2O + ___ NO2

A: 2 C8H10N4O2 + 27 O2  ---> 16 CO2 + 10 H2O + 8 NO2

Q: A sample of 4.25 moles of hydrogen at 20.0ᵒC occupies a volume of 25.0L. Under what pressure is this...

A: The number of moles of the gas sample is = 4.25 moles The temperature of the gas sample is = 20.0oC ...

Q: A 39.59 sample Of copper B heated in the presence of excess Oxygen and is converted to copper l11) o...

A: Given, mass of copper sample = 39.5 g Mass of copper (II) oxide formed = 45.5 g Molar mass of Copper...

Q: 20. If 145 mL of a 0.0078 mol/L solution of CUNO3 was mixed with 195 mL of a 1.48 × 10-3 mol/L solut...

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Q: Part A Zinc metal reacts with hydrochloric acid according to the following balanced equation. Zn(s) ...

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Q: The number of unshared pairs at atom a is The number of unshared pairs at atom b is H . H3C The numb...

A: The number of unshared pairs at atom a is two.   The number of unshared pairs at atom b is two.

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.