How many ATOMS of phosphorus are present in 3.91 moles of phosphorus trichloride? ________ atoms of phosphorus How many MOLES of chlorine are present in 3.66 x 10^22 molecules of phosphorus trichloride?  _______moles of chlorine

Q: A mixture of argon and neon has a measured gas density of 1.40 g/L at STP. Assuming ideal-gas…

A: Density of mixture = 1.40 g/L

Q: Sodium bicarbonate gives solutions that are slightly alkaline (approximately pH 8.3), and similar…

A: Concentration of sodium bicarbonate solution = 0.27 MThe Ka of HCO3- = 4.7 × 10-11…

Q: Which of the following is a strong nucleophile in a protic solvent? Select answer from the options…

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Q: Question 5 nRT (a) Show that dq = nCvdT + (T) dV is an exact differential. (b) Derive the expression…

A: To show that dq = nCvdT + (nRT/V) dV is an exact differential, we need to find a function U(T,V)…

Q: At 2.86 atm and 494 K, what volume of NO₂ gas forms from 59.66 g of O₂? 4 NH3(g) +70₂(g) → - 4NO₂(g)…

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Q: Write the acidic ionization equation for H₂SO3. Be sure to include the proper phases for all species…

A: To solve this problem we have to write the acidic ionisation equation of H2SO3

Q: If you wanted to anodize 1.00 mol of Al to Al₂O3, how many mol of electrons would you need to…

A: => Al + 3/2 O2  => 1/2 Al2O3 => Oxidation number of Al in Al2O3 is Al3+. => So we are…

Q: Using only the periodic table arrange the following elements in order of increasing ionization…

A: Ionization energy is defined as the amount of energy required to remove valence electron from…

Q: Propose a reasonable reaction mechanism for the following transformation. CH3 OCH3 H3O+ H₂O/CH3OH…

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Q: 2) Consider the reaction below: t-Bu ||||| EtONa ?

A: This reaction goes through E2 mechanism. For E2 mechanism both leaving group and beta hydrogen…

Q: A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company,…

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Q: Write the equilibrium constant expression, K, for the following reaction: If either the numerator or…

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Q: Consider the reaction below. 5 P4O6 + 8 I2 → 4 P2I4 + 3 P4O10 (a) How many grams of I2 should be…

A: The given reaction is: 5P4O6+8I2→4P2O4+3P4O10 The mass of P4O6 is 4.20 g.

Q: For the following reaction, 6.48 grams of hydrochloric acid are mixed with excess oxygen gas. The…

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Q: 8. Complete the acid-base equation, providing the missing species. Under each species, write A, B,…

A: Since,Conjugate acid is obtain by adding hydrogen ion.Conjugate base is obtain by removal of…

Q: m-CPBA P (Ph) 3 1. 2. Н30- со, MgBr OH OH OH ||

A: The question is based on organic reactions.      we need to identify the product formed and explain…

Q: How many grams of Fe(CH₂COO)2 are there in 201 grams of an aqueous solution that is 11.5% (w/w)…

A: For the Fe(CH3COO)2  [Iron(II) acetate]  solution  Mass of solution = 201 g  Mass % of Fe(CH3COO)2…

Q: Consider the titration of 40.0 mL of 0.18 M H3A (Kal = 1.9 × 10-4, Ka₂ = 1.2 × 10-8, Kaz KOH. a.…

A: A 40.0 mL of 0.18 M weak triprotic acid H3A is titrated with 0.18 M KOH.  The acid the dissociation…

Q: draw che chair confirmations of compound A and state which conformation is most stable

A: In chair conformation, the atoms are bonded at axial or equatorial positions. 1,2-axial and…

Q: 9) 0.0100 M Acetic acid, HCH3COO, has a pH of 3.37 while 0.0100 M hydrochloric acid, HCl, has a pH…

A: Check the strength between the two acids. On the basis of that strength, explain the difference…

Q: Read each description in the first column of the table below. If any chemical element with atomic…

A: Answer: In the given questions we have to find out if any element with atomic number less than or…

Q: Question: - The level of the carcinogenic compound, 3-monochloropropane-1,2-diol (3-MCPD), in a…

A: It is given that 3-MCPD permissible limit is 20 ppb but added in a sauce is 1750 times. => Total…

Q: What is the expected product of the following reaction sequence? O (A) A 00 O OH SOCI₂ py (B) NH₂…

A: The concept used in this question is taken from general Organic Chemistry.  The correct answer of…

Q: SA 4A SA 6A 7A He Li Be BC N O F Ne Na Mg 38 48 18 20 Al Si P S Cl Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu…

A: Hund's rule of maximum multiplicity: According to this rule, pairing of electrons in the orbitals of…

Q: or each compound, label the different H’s with lowercase letters, write the chemical shift range,…

A: 1H-NMR used for the identification of complete structure of the unknown compound with chemical shift…

Q: 1. How many unpaired This atom is 2. How many unpaired This atom is electrons are in the boron atom?…

A: Diamagnetic:  When atoms or ions with all electrons are paired their magnetic field effectively…

Q: Macmillan Learning Draw the products formed when each ester is treated with lithium hydroxide and…

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Q: Alcohol levels can be determined by reaction with dichromate (breathalyzer). C2H5OH(l) + 2…

A: The question is based on the concept of quantitative analysis . we need to calculate PPT of ethanol…

Q: 2. There are 36.7 grams of ammonia gas trapped in a non- deformable container. Calculate the volume…

A: Answer-2 STP means standard temperature and pressure where pressure is equal to 1 atm and…

Q: H+ HO HC1 (Excess) OH 1. LiAlH 4 2. H₂O* H₂ Pd/C 1. CH 3MgBr 2. H₂O+

A: LiAlH4: Reduces aldehyde and ketone  to alcohol HCl: adds to alkene to produce chloroalkane MeMgBr:…

Q: 3. Calculate the volume of 5.9 x 1023 molecules of propane gas trapped in a container at a pressure…

A: Given,  Molecules of propane gas = 5.9 x 1023  Temperature = 269 °F Pressure = 253.3 kPa

Q: Draw all the stereoisomers of 4-ethylidene-1,2-dimethylcyclopentane H₂C- H3C CH3

A: The isomers of a molecule which have same molecular formula same structural formula but difference…

Q: Convert 5.88 x 10-6 m to nanometers. Use only the metric system.

A: We know that, Meter unit measure length So, when change m to nm, 1 nm = 10-9 m (use this for…

Q: Translate the following chemical equation into a detailed word equation. Include relative…

A: The question is based on the concept of chemical reactions. We need to write the word equation for…

Q: What is the atomic mass of a metal (M) if 4.17 g of MCl2 produces 12.55 g AgCl in the following…

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Q: How many kilojoules are released when 10.0 g of steam at 112°C condenses, cools to 0°C and freezes…

A: Given  10.0 g of steam at 112°C condenses, cools to0°C and freezes at -25°C. Heat of fusion= 334J/g…

Q: the laboratory you are given the task of separating Ca2+ and Ag+ ions in aqueous solution. For each…

A: Ca2+ (aq) + SO42- (aq) => CaSO4 (s) (precipitate is formed) 2 Ag+ (aq) + SO42- (aq) => Ag2SO4…

Q: Calculate the pH change that results when 12 mL of 5.3 M NaOH is added to 768 mL of each the…

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

Q: Identify the reagent(s) you could use to accomplish the following transformation. Select all that…

A: This question belongs to basic organic reaction.

Q: CH₂ OH + NaHCO3 H₂O

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Q: If you have the following data about a container of rice, about how many grains of rice are…

A: The mass of rice + container = 786 g. The mass of the container = 332 g. The mass of 1000 Grains of…

Q: Phosphorus pentachloride decomposes according to the chemical equation PC1, (g) PC13(g) + Cl₂(g) Kc…

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Q: Write the basic equilibrium equation for HS. Be sure to include the proper phases for all species…

A: Bronsted and Lowry concept of Acids & bases is used to write basic equilibrium equation as…

Q: What mass of MgCO3 contains the same mass of oxygen as does 321 mg of MgCr2O7?   mg

A: mass of  MgCr2O7 = 312mg  1g = 1000 mg  so    mass of  MgCr2O7 = 312mg x1g1000 mg= 0.312 g

Q: Consider the formaldehyde molecule (CH₂O) in figure. The partial charges are indicated in red (e is…

A: In the given problem we are required to calculate the electric dipole moment vector μ in terms of…

Q: Calculate the molar mass of formaldehyde CH2O and C6H12O6.

A: Since, Molar mass of the compound is the sum of molar mass of each atom present in the molecule.…

Q: c) L A e) Br b) d) f) H CH₂CH₂ A C(CH3)3 a H OH

A: Following structural formula of compounds given -

Q: Suppose you measure out 0.0132 moles of ammonium sulfate on the balance. If the weigh boat…

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Q: Identify the expected major product of the following electrocyclic reaction. de 111 hv ? B IV

A: The given reaction is shown below The given options are We have to select the major product of the…

Q: What mass of Fe₂O3 is produced when 16.2 L of O₂ gas react with FeS at 458 K and 5.29 atm. 4 FeS (s)…

A: Given reaction 4FeS (s) + 7 O2 (g) -------> 2Fe2O3 (s) + 4SO2 (g)  Volume of O2 (V) = 16.2 L…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.