Question 36 Which of the following elements is formed when chromium is added to helium? O iron O argon O oxygen O titanium

Q: 3. Look at the two spectra below, one of which is 2-methylcyclohexanol and one of which is 3methylcy...

A: In IR, Alcohol peak at 3300 cm-1 (broad). Alkene C=C stretching = 1650 cm-1    

Q: In air, nitric oxide gas reacts with oxygen to produce nitrogen dioxide, which appears brown in colo...

A: The amount of Nitrogen dioxide formed can be calculated as follows

Q: What is the solubility of PBF2 in a solution that contains 0.0300 M Pb2 ions? (Ksp of PbF2 is 3.60 ×...

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Q: In nature, silver iodide (AgI) is obtained in the form of the mineral iodargyrite. This compound has...

A: A. As we add KI or AgNO3 in a solution containing AgI solubility of AgI decreases and it precipitate...

Q: 2Ng) + 312(9) → 2N13(9) k3 = 4.76 × 10- the overall (net) equation? intermediate products below: ste...

A: Net reaction is the sum of intermediate reactions. Slow step is rate determining step whose K is les...

Q: MULTIPLE CHOICE NUMBERS 1-5

A: Dear student the answer for five multiple choice question is given below.,    The Brønsted-Lowry the...

Q: Complete each statement: 1) When temperature of a gas increases under isobaric conditions, volume wi...

A: For a definite amount of gas, at constant pressure, the volume of the gas increases with an increase...

Q: QUESTION 8 Which of the following spectroscopic measurements is not consistent with cyclohexanecarba...

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly repos...

Q: If copper is able to displace magnesium, and magnesium is able to displace lead, what does this mean...

A: From the given data we can infer that , Copper is more reactive than magnesium , and Magnesium is mo...

Q: how would I get from one to the other? how would I know what reagents to use?

A: Retrosynthesis : Retrosynthetic analysis is a technique for transforming the structure of a syntheti...

Q: Characteristics conmpared What dbes water have unique to Other similar molecules? A.Water molecules ...

A: Water is a molecule which contains two hydrogen atoms and one oxygen atom in it and the arrangement ...

Q: Illustration 2. Making Chili Dynamites 3 wrappers 3 Chili 5 cheese 3 chili dynamites For you to make...

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Q: the concentrations of all substances present in the equilibrium mixture, if 2.35 mol of H2 and 2.35 ...

A: Given- Moles of H2 =2.35mol Moles of I2=2.35 mole  Volume= 10 .0L Moles of HI= 3.76 mol         

Q: Determine the pH of a .25 M CH3NH3Cl solution (Ka for CH3NH3+ = 2.3*10^-11)(Show the dissociation eq...

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Q: A combustion reaction released heat at a constant pressure. Which of the following statements is COR...

A: According to the first law of thermodynamics, the enthalpy change of a system is related by the inte...

Q: Determine the major organic product for the reaction scheme shown. Select Draw Rings More Erase он l...

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Q: This elements produced bright yellow flame when used in fireworks. * Ве Ca O Sr Mg Group 2 elements ...

A:                                 Answer Q=1 which element produce bright yellow flame when used in fi...

Q: What type of intermolecular forces must be overcome in converting each of the following from a liqui...

A: The interactions between molecules occur as they are held together by intermolecular forces of attra...

Q: Write Half Redox reaction Sn = Sn02

A: In a balanced redox reaction two conditions are satisfied i.e atom balance and charge balance. 

Q: How much is the energy required for vacancy formation for Pb at its melting temperature of 620.6°F i...

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Q: Calculate the heat capacity of calorimeter in the reaction of 50ml 3M acetic acid and 50ml 3M sodium...

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Q: Balance the following chemical equation (if necessary): Ca(OH),(s) + H,PO,(aq)→ H,O(1) + Ca,(PO,),(a...

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Q: Calculate the pH and percent ionization of a .25 M solution of weak base pyridine. Given Kb = 1.7 * ...

A: Given: The concentration of pyridine = 0.25 M Kb for pyridine = 1.7 × 10-9 We have to calculate the ...

Q: Be sure to answer all parts. Calculate the pH during the titration of 40.00 mL of 0.1000 M HCI with ...

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Q: Calculate the pH of a 0.40 M CH3COOna solution. Kb for CH3COO- = 5.6*10^-10. (Show the dissociation ...

A: First calculate the OH- ions concentration in the solution, and then pOH and then the pH of the solu...

Q: ch is the limiting reagent?

A: 2Mg +O2>>>2 MgO

Q: What is the [H3O+] of a 0.1982 M CH3(CH2)2CH2NH3Br? Answers are expressed in molarity. Kb for CH3(CH...

A: Given :  CH3(CH2)2CH2NH3Br is salt of strong acid and weak base.  [CH3(CH2)2CH2NH3Br] = 0.1982 M  Kb...

Q: H202(g) H20(g) + ½ 02(g) is second order in H202 with a rate constant of 0.650 M-1 s-1. If the initi...

A: H2O2 ->H2O +1/2O2 Rate constant=0.650M^-1s^-1 Initial Concentration of H2O2=0.246M Time = 24.0 se...

Q: Which of the following is not one of covalent bonds that indicate the presence of H-bond capabilitie...

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Q: A student was studying the pH differences in Erie Lake streams. The student measure a pH of 6 in str...

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Q: Determine the pH of a solution that is 0.50 M in Ch3COOH and 0.75M in NaCH3COO Ka for CH3COOH = 1.8...

A: Given:- Determine the pH of a solution that is 0.50 M in Ch3COOH and 0.75M in NaCH3COO Ka for CH3COO...

Q: What is the behavior of the resolution of the analytes as a function of the carrier gas in gas chrom...

A: The function of the carrier gas source is to provide the gas that will be used as the mobile phase f...

Q: What is the pH of an aqueous solution that is initially prepared as  0.40 M  Ca(ClO2)2 ?    Note:  K...

A: To calculate pH , we would use an ICE table for ClO2-.  For this first we would Calculate it's  mola...

Q: toluene: 7. Outline a synthetic pathway for preparing each of the following com- (a) 1,1-diphenyleth...

A: To synthesize these alcohols, we have to prepare grignard reagent.  Grignard reagent reacts with car...

Q: Indicate the reagents for the transformation: hex-3-en-2-one → 3,4-dibromohexan-2-one

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Q: In a salt that exhibits an exothermic reaction upon dissolution, increasing the temperature will   i...

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Q: You are asked to prepare 100.0 mL of a 30.0% (m/v) NaCl solution.  The procedure states that 0.513 m...

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to ...

Q: Calculate the pH when 60.0 mL of 0.200 M HBr is mixed with 30.0 mL of 0.400 M CHNH2 (Kb = 4.4 x 10-4...

A: The PH can be calculated as follows

Q: Burning 1.02 g of a fuel causes the water in a calorimeter to increase by 13.7°C. If the calorimeter...

A: Given data : Mass (m) = 1.02 g Increased temperature (ΔT) = 13.7 °C Heat capacity (C) = 3.09 kJ/°C

Q: Identify the most polar part(s) of the molecule?

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Q: lon-dipole interaction Dipole-dipole interaction lon-ion interaction Induced dipole-dipole interacti...

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Q: Determine the pH and percent ionization of a .80 M HNO2 solution. Given Ka for HNO2 = 4.5*10^-4

A: pH is determined by the concentration of H+ ions that will be formed after ionization of Nitrous aci...

Q: 8. Assume that the following exchangeable cations are present in a 25 gram sample of a soil Cation С...

A:  1 hectare means = 1010 grams

Q: 8. Assume that the following exchangeable cations are present in a 25 gram sample of a soil Cation С...

A: Given 25g of soil contains  K+ = 0.234 g                     = 0.234 / 39.1 mole = 5.98 x 10-3 mol  ...

Q: llowing questions based on this information.  Each question is a separate question.    a.  If comp...

A: A semipermeable membrane allow only solvent molecules to pass through itself.Thus a  semipermeable m...

Q: Arrange the following alkanes according to increasing boiling poin Hexane: 3-Methylpentane: 2,2-Dime...

A:

Q: 11. Which pH change represents a 100 fold decrease in the hydronium ion concentration? C. pH 10 to p...

A: 11. Given that , The no. Of folds of decrease in hydronium ion concentration is 100

Q: Sally has constructed a concentration cell to measure Ksp for MCln. She constructs the cell by addin...

A: Sally has constructed a concentration cell to measure Ksp for MCln. She constructs the cell by addin...

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.