An effusion container is filled with 2 L of an unknown gas. It takes 400 s for the gas to effuse into a vacuum. From the same container under the same conditions--same temperature and initial pressure, it takes 161 s for 2.00 L of O2 gas to effuse. Calculate the molar mass (in grams/mol) of the unknown gas.

Q: A sample of 0.55 g of carbon dioxide was obtained by heating 1.45 g of calcium carbonate. What is…

A: Percent practical yield is calculated if we know the theoretical yield of the reaction and the…

Q: Suppose a piece of silver jewelry contains 5.49×1022 atoms of silver (Ag). 1.) How many moles of…

A: Number of atom 5.49×1022 atoms of silverNA = 6.022 × 1023

Q: Identify the functional group in each compound. Part 1 of 2 Part 2 of 2 X Ś XX" X S

A: Functional groups are the group of atoms which are responsible for chemical and physical properties…

Q: 1. H₂CO Determine the products for the following reactions: 1) NaOCH3, CH3OH 2) H₂O Br são H CH3 1)…

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

Q: n atomic anion with a charge of -2 has the following electron configuration: [Ne] 3s²3 pº What is…

A: This question belong to Atomic Structure that is Electronic Configuration. [Ne] has 10…

Q: CH₂CH3 CH3CCH₂CH3 CH₂CH3 The IUPAC name is

A: Answer:The naming of organic compounds can be done with help of IUPAC as recommended by…

Q: Which of the following structures has the greatest number of O resonance contributors obtained by…

A: Resonance:The movement of lone pair of electrons or pi electrons to adjacent pi bonds to give stable…

Q: Please fill in the missing resonance structures (1), (2), (3), and (4) from the options below.

A: Resonance structures are structures where there is delocalization of electrons to impart overall…

Q: How many grams of Na₂CO3 (molar mass=105.99 g/mol) are formed from the decomposition of 3.75 grams…

A: First calculate moles for NaHCO3. Use the mol to mol ratio to calculate the mass of Na2CO3 formed.

Q: 2H, PO, (aq) + 3 Ba(OH)₂ (aq) Ba, (PO4)₂(s) + 6H₂O(1) How many moles of H, PO, are required to react…

A: Moles of Ba(OH)2 = 5.37Moles of H3PO4 = ?

Q: The gas phase decomposition of sulfuryl chloride at 600 K SO₂ Cl2 (g) → SO2(g) + Cl₂ (9) is first…

A: The given reaction SO2Cl2(g) -->SO2(g) + Cl2(g) is a first order reaction. We have to find…

Q: Are the following pairs of molecules enantiomers, diastereomers, or neither? CHO HO HO HO H H H -OH…

A: The molecules with the same molecular formula but different structures are known as isomers. If the…

Q: 9. Propose a mechanism for the following reaction H₂CO H60, OH

A:

Q: Curved arrows are used to illustrate the flow of electrons. Follow the curved arrows and draw, the…

A: Alkene react with Br2 to form dibromo product. Both the bromine atoms attached in anti position.Two…

Q: Cu₂O(s) + O2(g) → CuO(s) Express your answer as a chemical equation. Identify all of the phases in…

A: Answer:Balancing of chemical equation is based on the law of conservation of mass where total mass…

Q: Count the number of carbon (C) atoms in the structure below.

A: To count the number of carbon (C) atoms in the chemical compound 3,4-dihydro-2H-oxazine (C4H7NO),…

Q: 1. Predict whether the following reactions are likely to proceed by an E1 or E2 mechanism. 2.…

A: Given are organic reactions. These are elimination reactions. E1 is unimolecular elimination…

Q: An analytical chemist is titrating 185.8 mL of a 0.9600M solution of butanoic acid (HC3H,CO₂) with a…

A:

Q: HBr ROOR

A: Addition of HBr to alkene takes place according to Anti-Markovnikov rule in presence of peroxide…

Q: What is the order of increasing bond angles around the three indicated C atoms in the molecule? ΦΗ Ο…

A: Bond angle can be defined as the angle formed between two covalent bonds that originate from the…

Q: Answer the following questions pertaining to hydrogen bonding. Which of the following molecules can…

A:

Q: 2. List at least 2 different reactants that are capable for each of the following transformations?…

A: Given are organic reactions. Let's see other reactants for given transformations in next step.

Q: For many purposes we can treat ammonia (NH3) as an ideal gas at temperatures above its boiling point…

A: Answer:For a fixed mass of gas, value of  for any gas sample remains constant, therefore,

Q: 36. Which of the following is a tertiary alkyl halide? A. (CH) CHBr B. (CH) CHCH.C C. (CHICCI D.…

A: Alkyl halides are a compound in which one or more hydrogen atoms in an alkane have been replaced by…

Q: Structure a: Identify each of the above structures as either achiral, chiral, or a meso compound.…

A: The given compounds are spiro compounds. Chiral Compound: A molecule is chiral if it lacks a plane…

Q: Identify the functional group in each compound. Part 1 of 2 X Part 2 of 2 SH : OH

A:

Q: A sample of an unknown gas effuses in 10.8 min. An equal volume of H₂ in the same apparatus under…

A:

Q: [References] The alkene shown below is treated sequentially with ozone (03) and zinc/acetic acid.…

A: Given is organic compound. When alkene treated with ozone and Zn , acetic acid , this reaction is…

Q: What is the IUPAC name of the following compound? 0000 potassium 2-methylbutanoate sodium…

A:

Q: Draw the skeletal ("line") structure of cis-5-methyl-2-hexene.

A: Skeletal structure is the line structure in which bonds are represented using lines.C-H bonds are…

Q: Give the IUPAC name for the following compound: CH₂ H₂C Def H₂C CH CH3 CH₂

A:

Q: 6. Match the structures below with the appropriate C-13 spectra that follow. 3. 5-1 OH -CH₂ b.…

A: Carbon-13 Nuclear Magnetic Resonance (C-13 NMR) spectroscopy is a highly effective analytical…

Q: Estimate the values of bond angles 1 and 2 on the structural representation of creatine: a b C d…

A:

Q: For the compound below please determine which of the three protons (a), (b), or (c) is more acidic…

A: The negative charge on an atom is stabilized by the following factor.the nature of the…

Q: 오--1 0: 2

A: Resonance structures are structures where there is delocalization of electrons to impart overall…

Q: But-2-yne has a pKa~ 38. Evaluate the ability of bases to deprotonate the provided acid. H H3C -H H…

A: Acidity is defined as the ability of a molecule to release protons.  if a compound  easily donate…

Q: A solution of phenylacetic acid has an initial concentration of 8.894 M. If the K₂ of phenylacetic…

A: #1:Initial concentration of C6H5CH2COOH = 8.894 M Ka of C6H5CH2COOH = 4.9 * 10-5

Q: Calculate AHrxn for the following reaction: CaO(s) + CO2(g) → CaCO3(s) Use the following reactions…

A:

Q: Determine the volume of 1.50 moles of gas at 35.0 degree celcius and 2.25 atm

A: The moles of the gas is .The temperature of the gas is .The pressure of the gas is .To calculate the…

Q: Rank the following compounds in the table below in order of increasing intermolecular forces. Choose…

A:

Q: An atomic anion with a charge of -2 has the following electron configuration: 5 1s² 2.s² 2p³ What is…

A: Given , electronic configuration of anion with -2 charge .We need to provide it's symbol, number of…

Q: Draw one of the two stereoisomers of the major product from this reaction.

A:

Q: 13. The IUPAC name for the following substance is 6-methyl-2-bromoheptane. Br ht a. True b. False

A: 1.) The longest carbon chain containing maximum number of carbon atoms is considered.2.) Numbering…

Q: (a) Determine the ACTUAL configuration (R or S) of each stereocenter on the wedged/dashed structure…

A:

Q: Give the IUPAC name for the following compound: X 5

A: -Select the parent chain with the longest possible continuous carbon chain with a maximum number of…

Q: Choose the best conditions that would result in the addition of one halogen in the indicated…

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Q: 2. Draw the compound in the skeletal form. CH,CH,CH,CH3 H H₂CH₂C H CH3 3. Draw a chair conformation.…

A:

Q: Heptanedial react with KOH (aq).  What is the possible reaction products. Some inducate that a…

A: Given is organic reaction. A reaction of Heptanedial with KOH (aq) is Aldol reaction.And we get beta…

Q: What are the angles a and b in the actual molecule of which this is a Lewis structure? a

A: Hybridization = number of sigma bonds + lone pair not involved in resonance The hybridization for…

Q: What is the percent composition of H in C9H18? % (Give answer with two decimals)

A: Consider a compound AB Percent composition of A :(total mass of A in AB/total mass of AB) x 100

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.