A 5.738g sample of impure aluminium reacted with hydrochloric acid converting all the aluminium in the sample to 27.14g of aluminium chloride, AlCl3 determine the percentage of aluminium in the original sample

Q: Suppose you burn a 2.4 g sample of potato chips. You use the heat given off from that process to…

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Q: For the reaction Ca(OH)2(aq) + 2HCl(aq)CaCl2(s) + 2H2O(l) H° = -30.2 kJ and S° = 205.9 J/K The…

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Q: A buffer solution contains 0.320 M C6H5NH3Br and 0.383 M C6H5NH2 (aniline). Determine the pH change…

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Q: Phenacetin was a widely used pain-reliving and fever deducing drug until the 1970’s when it was…

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Q: current

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Q: Does a reaction occur when aqueous solutions of chromium(III) sulfate and ammonium sulfide are…

A: Reaction occurs between chromium(III) sulfate and ammonium sulfide.

Q: Air 2 mu gniy 60% nitrogen and 201%. oxygen . How mally moles of tho o Xy gen Molecul rs are found…

A: Given questions are:-

Q: properties from left to right. However, the pattern of properties within a period repeats as you…

A: In this question, we have to explain what does periodic law state and mean.

Q: The solubility of copper (II) fluoride is 0.075 g/100 mL at 20ºC.  What is the solubility product…

A: Given: Solubility of copper (II) fluoride = 0.075 g/100 mL Molar mass of copper (II) fluoride =…

Q: What is the pH of a 0.1000 M NH4BR solution? (Kb NH3 = 1.8x10^-5) %3D

A: Given-> Concentration of NH4Br =0.1000 M Kb = 1.8 × 10-5

Q: Calculate the change in freezing point of water , with ethalpy of fusion = 6.009 kJ/mole) and the…

A: In this question, we have to Calculate the change in freezing point of water , with ethalpy of…

Q: Part A As a technician in a large pharmaceutical research firm, you need to produce 150. mL of a…

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Q: time (minutes)

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Q: The quantitative determination of pyridoxine hydrochloride can be carried out by methods: A.…

A: A multiple choice question based on coordination compounds that is to be accomplished.

Q: 4. The unbalanced decomposition reaction of butane gas in excess oxygen produces carbon dioxide gas…

A: No.of mole = Mass of substance/ molar mass Volume of 1 mole of gas at STP is 22.4 litre.

Q: 2. Propose a mechanism for the transformation below. Be sure to show all intermediates, curved…

A: Carbocation stability,  Tertiary carbocation is more stable than secondary carbocation....

Q: se this list of half-reactions to answer the following question(s). MnO4−(aq) + 8H+(aq) + 5e−…

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Q: A 29.3 mL sample of 0.365 M dimethylamine, (CH3)2NH, is titrated with 0.362 M hydrochloric acid. At…

A: Since you have asked multiple question, as per our company guidelines we are supposed to answer the…

Q: uestion 2 A metal has an atomic radius of 0.1371 nm and a BCC structure. For a given direction shown…

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Q: Group the characteristics of the give substance according to their physical (extensive or intensive)…

A: Answer: Extensive properties of a substance are the one, those depend upon the quantity of the…

Q: When 14.7 g of CaCl2(s) (molar mass 111.0 g/mol) was dissolved in water in a constant pressure…

A: We have 14.7 g of CaCl2 dissolved in water in a constant pressure with heat capacity 1168J/°C The…

Q: Usually have a sour odor Carboxylic acids Do not form hydrogen bonds amongst themselves and have…

A: 1) Many carboxylic acids dissolve in water. Solutions of many carboxylic acids have a sour taste to…

Q: A 50.00 mL of 0.0275 M HCl solution was titrated with 0.1500 M NaOH. Calculate the pH of the analyte…

A: Given,  Molarity of HCl = 0.0275 M  Volume of HCl in mL = 50.00 mL  Molarity of NaOH = 0.1500 M…

Q: (d) 1-Propanol (e) 2-Propanol (f) CH3CH2CH(CO,H)2

A: (d) When 1-propanol it treated with phosphorus pentachloride, then initially chloropropane is formed…

Q: What type of tertiary interaction do we observe for the two amino acid residues in the box? Draw the…

A: There are 4 types of protein structure-  1- primary structure 2- secondary structure 3- tertiary…

Q: 5. Calculate the pH of At the second equivalence point when 0.10 M trisodium arsenate is titrated…

A: The solution of the given question is

Q: Explain the importance of cold pack

A: Cold pack help lower the temperature in certain areas of the body and reduce pain and swelling.…

Q: Practice Exercise The reaction of peroxydisulfate ion (S,O§¯) with iodide ion (I") is S,O5 (aq) +…

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Q: Under standard conditions (298 K and 1 atm), which statement is true? under standard conditions.…

A: 1. Under standard conditions (298K and 1 atm) ,  Answer- A. Diamond converts to graphite…

Q: Choose the most accurate major product (only) of the following reaction. NaOCH3 in CH3OH a.…

A: In SN2 mechanism inversion of configuration occur...

Q: 3..Name the IUPAC for the following compound.

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Q: Determine whether each phrase describes carboxylic acids or esters. Usually have a sour odor…

A: Carboxylic acids are organic compounds with carboxyl functional group ( -COOH ). They have the…

Q: Consider the following system at equilibrium where K. 9.52x10 2 and AH° = 18.8 kJ/mol at 350 K. CH4…

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Q: A buffer solution contains 0.336 M CH3NH3Br and 0.344 M CH3NH2 (methylamine). Determine the pH…

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Q: Q2:. (a) For a free electron with a velocity of lo' cm/s, what is its de Broglie wavelength. (b) In…

A: formula for this, de-broglie wavelength = plank const/(mass of electron*velocity)

Q: Classify the chemical reaction as combination (C), decomposition (D), single replacement (SR), or…

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Q: with the choices listed below, which sublevel is filled last?     choice 1- 3d choice 2- 4s…

A: The order of filling the electron in subshell is according to the energy.

Q: Titration Curve Using the table of indicators identify which of the given 13 12 indicators would be…

A: As per the given titration curve pH of the solution suddenly changes from 11 to 3.

Q: How many milliliters of diluent should be added to a 2.00 mL if aliquot taken from a mother liquor…

A: In case of dilution of any electrolyte, the number of moles (or millimoles) of the electrolyte will…

Q: Which of the following normal modes of BF, is NOT IR active? А. В. С. D.

A: The IR inactive mode of BF3 is given below

Q: Oxidation number of C in H2CO3 is Answer:

A: Given compound-                                  H2CO3

Q: Calculate the standard change in Gibbs free energy, AGxn, for the given reaction at 25.0 °C. KCI(s)…

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Q: A standing wave has wavenumber 163 rad/m. What is the distance between two adjacent nodes?

A: Standing wave is the combination of two waves moving in opposite directions. Each wave having the…

Q: 29.3 mL sample of 0.365 M dimethylamine, (CH3)2NH, is titrated with 0.362 M hydrochloric acid. At…

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Q: For a particular redox reaction, BrO is oxidized to BrO, and Ag+ is reduced to Ag. Complete and…

A: BrO-   ion  is called hypobromite . Ag+ ion is  called silver ion. BrO-   +    Ag+   ------->…

Q: during an experiment to determine avogadro's number 4 trials were recorded. what is the average…

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Q: - Mention some common types of oxygen compounds?

A: 2. Answer - According to the question - Given - On Earth, the most common compounds formed by oxygen…

Q: Considering the Ksp values for the substances measured at 25 ° C, write the Ksp equation and…

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Q: Calculate the change in entropy when 10.00 g Ar is allowed to expand from 25 cm^3 to 100 cm^3 at 350…

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Q: How many moles of water are formed when 250 mL of 2 M HNO3 completely reacts with NaOH? HNO3(aq) +…

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".