How many moles of iron are in (3.7x10^36) atoms of iron (Fe)? For Avogadro's number use:  6.022 x 1023 Round your answer to two significant figures.

Q: A cylinder of helium has volume of 600 cm^3? The cylinder contains 200 g of helium at a temperature…

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Q: Am I drawing the resonance correctly for each? Thank you

A: Resonance structure: If the Lewis structure of a molecule or ion cannot explain by a single…

Q: 1. For the reaction: H2 +Cl2 ----->  2HCl, 3.7 moles of H2 are mixed with excess HCl. How many moles…

A: 1. For the reaction: H2 +Cl2 ----->  2HCl, 3.7 moles of H2 are mixed with excess HCl. How many…

Q: Identify the molecularity of each elementary reaction in the table below. elementary reaction 2NO(g)…

A: Molecularity :

Q: Van der Waals Equation of State The Van der Waals equation of state is: (p+ ²) (V - nb) = nRT Table…

A: Given :-  Volume of CO2 = V = 2.91 L  Moles of CO2 = n = 0.213 mol  Temperature = T = 207 K  From…

Q: The rate law for the reaction NO₂(g) + O₂(g) → NO(g) + 03 (g) = k[NO₂][0₂] is given by rate = k If…

A: According to the question we have a chemical reaction            NO2(g) + O2(g) → NOg + O3g The rate…

Q: 5 (2.74) The carat is the unit of mass used by jewelers. One carat is exactly 200mg. How many carbon…

A: 1 carat = 200 mg Diamond present = 2.5 carats Molar mass of carbon = 12.01 g/mol

Q: Resonance: Resonance form of ethyl propanoate Part A Draw the resonance structure of the following…

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Q: X tetracyanoethylene (A) Dipole-dipole interactions SEG London dispersion forces -0=1 -3=1…

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Q: Consider the following system at equilibrium where Kc = 0.159 and AH° = -111 kJ/mol at 723 K. N₂ (g)…

A: We would use Le-Chatelier's principle to determine the answers.

Q: access important values if needed for this question. The reaction of nitrogen dioxide with fluorine…

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Q: Calculate the amount of heat needed to boil 156. g of ethanol (CH,CH,OH), beginning from a…

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Q: What is the s character of sp3 carbon

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Q: The rate of a certain reaction is given by the following rate law: rate=k[H₂] [1₂] Use this…

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Q: the structure below represents 1.) a face centered cubic unit cell 2.) a body centered cubic unit…

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Q: Consider a hypothetical chemical reaction: A+B C+D (In this equation A, B, C and D stand for some…

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Q: How would you solve 178.45-0.033x10^3, with the appropriate amount of significant figures

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Q: If 43.3 mg of Al(OH)3 react with 14.6 mg of HCl, how much AlCl3 is formed?

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: For the molecules below use formal charge to identify the specific atom(s) which hold indicated…

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Q: What is the meaning of the phrase "tare the mass of a piece of weighing paper?"

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Q: The mass spectrum of CH3F is given in the chart below. (a) Draw a likely structure for the molecular…

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Q: Compound [Ni(CO)4] [Fe(CN)5] PROBLEM WORKSHEET B [Cr(OH)6] Coordination Charge on the number metal…

A: We are authorised to solve only first three subparts of a question. Please post rest of the subparts…

Q: How many geometrical and/or optical isomers do the following molecules have? Draw a sketch of each…

A: Geometrical isomerism or cis-trans isomerism are isomers having different arrangement of atoms in 3D…

Q: 1) You are given an unknown solution, which contains both aqueous barium ion, Ba²+ (aq), and aqueous…

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Q: How many grams окуди In 52.34д K2Cr2O7 (294.192 (по))

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Q: A 0.015 M benzoic acid with pH 3.01, has a hydrogen ion concentration of 9.7 O True O False

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Q: 5. Lance obtains a silvery metallic unknown. He weighs the metal and finds that he has 60.55g. When…

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Q: Question 11 Benzoic acid is used as food preservative. A 0.015M solution of the acid has a pH of…

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Q: The density of copper is 8.96g/cm^3. What is the mass in mg of a cube of copper that measures 2.31…

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Q: Name the structures of aldehydes and ketones below:

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Q: Draw the skeletal (line-bond) structure of [CH₃CH₂CHC(O)CH₂CH₂CH₃]⁻. Include all lone pairs and…

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Q: Consider the following mechanism for the decomposition of ozone: 03(g) → O₂(g) + O(g) 03(g) + O(g) →…

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Q: When 84.8 g of alanine C3H7NO2 are dissolved in 1200. g of a certain mystery liquid X, the freezing…

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Q: OH қ OH -Ph Ph H₂SO4 Ph Ph

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Q: which of the following phase transitions is/are exothermic? 1. liquid water evaporating into the…

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Q: A student decomposes KClO3 and collects 36.5 cm3 of O2 over water at 23 Celcius. The laboratory…

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Q: Haemoglobin is a form of which type of polymer? a) Protein Ob) Lipid c) Nucleic Acid d) DNA

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Q: Draw a structure of a: a. Fatty Acid 18:3 (△9,12,15) b. Reducing Sugar

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Q: Think about the distinction between slotted and pure ALOHA under light loads. Which one is the…

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Q: 16.Calculate AS rxn for the following reaction. The S° for each species is shown below the reaction.…

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Q: ACTIVITY A QUESTIONS 1. On a logarithmic scale what is the magnitude of difference between two…

A: #1:  On a logarithmic scale, the "log" value has a base of 10.

Q: A chemical engineer is studying the rate of this reaction. 2NH3(g) → N₂(g) + 3H₂(g) - She fills a…

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Q: are substances that release hydrogen ions.   Question 3 options:   a)  Basic substances   b)…

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Q: Draw a model of a nitrogen (N) atom. The atomic number of N is 7. How many electrons are in  an…

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Q: What is the mass number (A) of an iron atom that has 31 neutrons?

A: Mass number is equal to the sum of the number of protons and the number of neutrons.

Q: Choose the correct IUPAC name for the following compound: & a) 1,3-dichlorocyclohexane Ob) Oc)…

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Q: 2. Draw the direction of the molecular dipole moment for each of the following compounds: H₂ Н C=N…

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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.