II II IV

Q: Phosphorus pentachloride decomposes according to the chemical equation PCI,(g) = PCI,(g) + Cl,(g) K ...

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Q: 560 cm3 of a gas weighs 1.55 g at STP.  Calculate the MW of the gas.

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Q: 20. A 2.00g sample of magnesium was burned in excess pure oxygen, according to the equation below: 2...

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Q: Which of the following type of chemical reactions results in a single product. Select the correct re...

A: Chemical reactions are of different kinds.  A decomposition reaction is a reaction in which a single...

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

A: The solution of the question is given below 

Q: Q6. The reaction of NH3 and O2 forms NO and water. The NO can be used to convert PA to P,06, forming...

A: Given: NH3 reacting with O2 to form NO and water  NO is reacting with P4 to form P4O6  P4O6 reacts w...

Q: Select the energy in joules that an average oxygen molecule in a flame at 2000 K would have       ...

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Q: Calculate for the equilibrium or solubility constant of the dissolution of 0.065 m M2SO4 with th rea...

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Q: If weak acids ionize only a few percent in aqueous solution, why is it possible to fully neutralize ...

A: Concept:  Weak acid: Weak acids are acids which don't completely dissociate in solution. In other wo...

Q: 5. Sodium hypochlorite (NAOCI, the active ingredient of almost all bleaches) was dissolve in a solut...

A: Since Ka valve of HOCl = 3.0×10-8 Therefore pKa = - log (Ka)    = -log (3.0×10-8)  = 7.52  

Q: 4. What is the pH of a buffer solution consisting of 0.0550 M NH3 and 0.0800 M NH, (K, for NH. is 5....

A: Given, Concentration of NH3 = [NH3] = 0.0550 M Concentration of NH4+ = [NH4+] = 0.0800 M Ka for NH4+...

Q: sucrose undergoes fermentation. If 10 M solution of sucrose is reduced to 5 M in 1 hours and to 2.5 ...

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Q: If a plastic container at 2.0°C and 750. mm Hg is heated in a microwave oven to 77°C, what is the pr...

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Q: Looking over the results for both students, Listerine was the antiseptic with the broadest spectrum ...

A: Disinfectants used to destroy bacteria, viruses, fungi. Disinfectants work by destroying the cell wa...

Q: An experiment involving the reaction between ammonium hydroxide and Cu2+ ions in aqueous solution wi...

A: In this investigation, understudies add alkali to an answer of copper(II) sulfate, notice the shadin...

Q: . Upon investigating the pH of different ponds, you found out that a sertain pond measures 4.2 which...

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Q: NH2 .7 2 HO 4 1 3

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Q: What is the best way of heating a flammable liquid like ethanol? Select the correct response: Use a ...

A: Flammable liquids are the liquids which easily catches fire.

Q: 23. What is the oxidation number of potassium in the following reaction? PBSO:(aq) 2KBr(aq) -> K2SO4...

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Q: Determine the required grams of a solid organic acid (KHP – 204.2 g/mol) that used as a primary stan...

A: Given :  Molar mass of KHP = 204.2 gm /mol  Concentration of base (NaOH) = 1.005 mol/L

Q: Sections 5.4-5.6 Decomposition, Combination and Replacement Reactions 6. Classify each reaction as r...

A: Redox reaction: Redox reaction is a type of chemical reaction in which the oxidation states of atoms...

Q: Decide whether this propossed Lewis structure is reasonable. proposed Lewis structure Is the propose...

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Q: The dissecting room of a certain coroner is kept at a constant temperature of 5° C. One day the coro...

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Q: 1.(a) Which of the following groups has the LOWEST IUPAC priority? (A) CH3 (B) NH2 (C) OH (D) COOH (...

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Q: The following initial rate data are for the reaction of UO,+ with hydrogen ion in aqueous solution: ...

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Q: Could you explain how 111 would be the answer? (Limiting Factor in Stoichiometry)

A: Reaction:-  Al(s) + Br2(g) ----> AlBr3 Balanced Reaction:-  2Al(s) + 3Br2(g) ----> 2AlBr3  

Q: The compositional analysis of a sour natural gas which has a specific gravity of .7, shows that the ...

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Q: What is the pH of a 4.9 × 10-6 M KOH solution?

A: given :- concentration of KOH solution = 4.9 × 10-6 M  to calculate :- pH of solution 

Q: ii0. In the presence of palladium in calcium carbonate, what is the IUPAC name of the product betwee...

A: In the presence of palladium in calcium carbonate, what is the IUPAC name of the product between the...

Q: 4) When a mixture of two different compounds both containing a hydrogens are placed under acidic or ...

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Q: Enantiomers can be distinguished using mass spectroscopy because they have different fragmentation p...

A: Mass spectrometry uses ionisation method to form fragments of a compound and then give peaks accordi...

Q: 6. Find the pH of a 1.00-L aqueous solution prepared with 14.23 g of tris (FM 121.00) plus 5.67 g of...

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Q: Give the name and use of the glassware/material below: Select the correct response(s): Iron Ring Hol...

A: Different kinds of equipments are used in laboratory. Different equipments has different functions. 

Q: Would you expect aspirin to exhibit a faster release rate from the fatty base or a PEG base? Why?

A: Modified-release dosage is a mechanism that (in contrast to immediate-release dosage) delivers a dru...

Q: Fe(NH.)2(SO4)2-6H20 + H;C¿O4 + K2C,04 + H2O2→ K3FE(C204)3-3H;O + (NH.)2SO, + H,SO, + H,O. 1. Balance...

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Q: Use the observations about each chemical reaction in the table below to decide the sign (positive or...

A: Solution: Enthalpy is a thermodynamic function which is used to predict the spontaneity of a reactio...

Q: How many moles of gas are contained in a human breath that occupies 0.92 L and has a pressure of 747...

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Q: 21. Which of the following equations is/are balanced 3MGO+2FE→FE20O3+2Mg a. b. N20-N2+O2 c. C2H3N2+2...

A: In option a: the reactant side 3Mg, 3O and 2 Fe atom and in the product side 2Fe, 3O and 2Mg atom is...

Q: 5. Sodium hypochlorite (NAOCI, the active ingredient of almost all bleaches) was dissolve in a solut...

A: Given: The pH of the buffer solution = 4.90 We have to find the ratio [OCl-][HOCl] in the solution. ...

Q: ed for you to contact the manufacturer and/or supplier of the chem rect response:

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Q: Predict a possible mechanism: a. 1. MgBr 2. H,0 b. 1. LAH "NH2 2. H20 c. Ph;P-CHCH,CH,CH3

A: Dear student , I am authorized to answer only first three subparts of your question as per guideline...

Q: grams

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Q: Given the thermodynamic data of ethanol below, calculate the chanee in entropy of 55.5 g of solid et...

A: To calculate change in entropy we need to calculate change in energy .  To calculate energy we would...

Q: он OH Br OCH OH Br

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Q: Practice Exercises Exercise 4 Exactly 0.2220 g of pure Na,Co, was dissolved in 100.0 ml of 0.0731 M ...

A: sodium bicarbonate and HCl undergoes displacement reaction where more reactive chlorine replaces car...

Q: 4. What is the pH of a buffer solution consisting of 0.0550 M NH3 and 0.0800 M NH. (K, for NH is 5.6...

A: Given-> [NH3] = 0.0550 M [NH4^+] = 0.0800 M Ka(NH4^+] = 5.6 × 10^ -10 

Q: Calculate the volume of each substance at STP.   a. 4.1 mol Ar     L   b. 1.9 g CO2     L

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Q: The following data are for the decomposition of nitramide in aqueous solution at 25 °C. NH2NO2(aq) –...

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Q: Problem 24.1 Draw the aldol product formed from each compound. CH,CHO b. (CH,),CCH,CHO C. CH d. CH3 ...

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

Q: In preparing an infusion of the drug cetuximab, a pharmacist adds 15 mL of bacteriostatic water for ...

A: Drug Trastuzumab 350mg. Here pharmacist adds 15 ml bacteriostatic water into it and resulting 24mg/m...

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.