Tungsten has 5 naturally occurring isotopes. These are: Isotope Isotopic mass % Isotopic abundance 180W 179.946706 0.12 182W 181.948206 26.50 183W 182.950224 14.31 184W 183.950933 ? 186W 185.954362 ?   By making use of the data provided, determine the % abundances of 184W and 186W.

Q: Find modeling (if any, there should be) for steel production via Hydrogen Direct Reduced Iron (DRI)…

A: Hydrogen-based DRI method was introduced as a greener approach to steel production. Earlier the…

Q: H | N EN

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Q: Suppose that 1.07 g of rubbing alcohol CH₂O evaporates from a 750 g aluminum block Aluminum has a…

A: Answer:When rubbing alcohol will be evaporated then it will gain heat in that process and that heat…

Q: . What pressure would 131 g of Xe gas exert in a vessel of volume 1.0 dm³ at 25°C, if it ehaved like…

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Q: Being able to identify where charge (postive and negative) is located within a molecule is useful in…

A: Given is the structure of amine, having polar N-H and C-N bonds. Polar bonds are the ones which have…

Q: 4) The molality of ethyl alcohol in a solution of water (H₂O, MW = 18.02 g/mol) and ethanol (C₂H,OH,…

A: Given,the molality of ethyl alcohol in water solution = 0.376 mol/kgMolar mass of H2O = 18.02…

Q: Draw the structure of a gold-PR3 complex with chloroquine as a ligand and briefly discuss the role…

A: The structure of a gold-PR3 complex with chloroquine as a ligand is as follows:

Q: Rank the basicity of the molecules A through E, shown. Select the correct response from each of the…

A: With increasing the availability of electrons on N atom, the basicity increases. sp3 hybridized N is…

Q: Determine the Miller indices for the planes A and B shown in the unit cell 4+2 B mir

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Q: How many atoms are in each of the following samples that contain naturally occurring iodine atoms?…

A: The number of molecules or atoms present in the one mole of the substance is equal to the Avogadro…

Q: A solution is formed by adding 4.218 g of naphthalene (C10H8, MW = 128.17 g/mol to benzene (C6H6,…

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Q: Select the correct IUPAC name of the following compound: H Ill... O c. O d. Br ...H CH3 O a. (1R,…

A:

Q: Enter a formula for the compound that forms between barium and each polyatomic ion. 1) Hydroxide…

A: Barium is an alkaline earth metal. The barium ion (Ba2+) is formed when barium loses two electrons…

Q: 5. What is the pH of a 0.25M HC,H,O, solution and what is its percent dissociation (or ionization)?…

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Q: 107) How many carbon-carbon sigma bonds are in the molecule shown? H HTC=C—C—H H

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Q: If 30.6 grams of bromine and 13.6 grams of chlorine combine to form bromine monochloride, how many…

A:

Q: 36) If (S)-glyceraldehyde has a specific rotation of -8.7°, what is the specific rotation of (R)-…

A:

Q: The formula NaCI crystal means that sodium chloride crystal is made of neutral sodium atoms and…

A: Statement given :The formula NaCI crystal means that sodium chloride crystal is made of neutral…

Q: sketch a schematic showing how a liquid sample can be extracted from a liquid pipeline?

A: the following diagram shows the representation of a sampling system

Q: The Blue Giant of the Orient is the largest faceted sapphire in the world, with a mass of 486.52…

A: Given,the mass of sapphire = 486.52 carats    ( 5 carats = 1 g )the density of sapphire = 3.98 g/cm3…

Q: Click the "draw structure" button to launch the drawing utility. Draw a second resonance structure…

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Q: PART IV. FORMATION OF COPPER METAL In Part D of the experimental procedure, 3 M sulfuric acid is…

A: Balanced chemical equation can be define as a reaction in which number of atoms of all the elements…

Q: Question 26: Calculate the Ka and Kb of the following conjugate acids and bases to 2 significant…

A: Answer:If acid and base are conjugate of each-other then product of and  will always be equal to…

Q: Multiply or divide the following measurements. Be sure each answer you enter contains the correct…

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Q: The following data were collected for several compounds of iron and oxygen:     Mass of iron that…

A: The ratio of the mass of iron that reacts with 1 g of oxygen between two compounds (A and B) tells…

Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

A: (43. Pa.mm2) •  = ? Pa.m2Note: As we know that,1 mm2 = 10-6 m2

Q: If two or more atoms have the wrong number of valence electrons around them, just enter the chemical…

A: Lewis Structure is a representation of the valence shell electrons in a molecule. An atom can share…

Q: A study of the rate of the reaction N₂(g) + 3 H₂(g) → 2 NH3(g) gave the following data. Determine…

A: For the given reaction:Determine the average rate of consumption of H2 (M/s) between 24.0 and 36.0…

Q: In a solution of n-pentane, each molecule has 5 carbons,  and in a solution of 1-butanol each…

A: Answer:Attraction forces that acts between different molecules of a compound are called as…

Q: Which of these pairs of structures represent resonance structures? ZI H -ОН (+) (+) (+) ZI `H

A: This problem is based on general organic chemistry. Here we have to identify the resonating…

Q: What concentration of oxalic acid, HOOCCOOH(H2A), will have a pH of 50 (pKa1 = 1.25; pKa2 = 4.14)?

A: Given:pH = 2.50pKa1 = 1.25pka2 = 4.14The pH of a solution is determined using the negative logarithm…

Q: CH3N2 draw a lewis structure with explanation please

A: Let us draw step by step Lewis structure of CH3N2.Let us discuss complete structure.

Q: In the laboratory you are asked to make a 0.359 m chromium(II) nitrate solution using 255 grams of…

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Q: [Review Topics] [References] Unshared, or lone, electron pairs play an important role in determining…

A: Valence electrons: Electrons that are present in the outermost shell of an atom.Valence electrons…

Q: PART I. MAKING A SOLUTION OF COPPER NITRATE I. 1. OXIDATION NUMBERS In Part A of the experimental…

A: Combining capacity of an element in a compound is known as oxidation number

Q: Question 18: Arrange the following acids from strongest to weakest acid. Ka values for weak acids…

A: Answer:Higher the value of dissociation constant Ka, stronger will be the acid and vice versa. So,…

Q: A mixture of the stereoisomers of glutamic acid has an observed rotation of +6°. The specific…

A: The specific rotation of pure (R)-(–)-glutamic acid is =  –24°Hence the specific rotation of pure…

Q: A solution was prepared by mixing benzene () and carbon tetrachloride (). Given that the mole…

A: Answer:If number of moles of benzene used are  and number of moles of carbon tetrachloride used are…

Q: The following is an example of a graph prepared by a student in the Fall 2021 semester. It mostly…

A: A question based on tools in analytical chemistry.. A couple of issues in the given graph can be…

Q: Question 20: What is a correct expression for the Ka of HCN? [H+][CN-]/[HCN] [H3O+][CN]/[HCN]…

A: The equilibrium constant of a chemical reaction is the value of its reaction quotient at chemical…

Q: Calculate the mass of 15.5 L of a substance whose density is 1.1 g/mL. Express your answer in grams…

A: Density is defined as the mass of substance divided by the volume of substance.

Q: What is the hybridization for the following atoms in problem 1? (a) CH3CN C1 (b) CH₂CHNH2 C1_ C2 C2…

A: Hybridization is the mixing of atomic orbitals to form new hybrid orbitals which are suitable for…

Q: A chemist measures the energy change AH during the following reaction: 2 Fe₂O3(s) 4 FeO(s) + O₂(g)…

A: 2Fe2O3(s) ----> 4FeO(s) + O2(g)      ∆H = 560. kJThis reaction isendothermicexothermicSuppose…

Q: Identify the functional groups in the following molecule. NH₂ HO amide lactone carboxylic acid…

A: It is asked to find the functional groups of the given molecule.Functional group: A group of atoms…

Q: Decide whether the Lewis structure proposed for each molecule is reasonable or not. molecule…

A: A Lewis structure is a very simplified form of the valence electrons in a molecule. electrons are…

Q: Consider the following reaction: A(g)⇌B(g)+C(g)A(g)⇌B(g)+C(g) Find the equilibrium concentrations…

A: Answer:Value of equilibrium constant  is equal to the ratio of molar concentration of products and…

Q: find the average deviation for each sets of measurments a) 21.8, 22, 21.5 b) 17.70, 17.70, 17.70 c)…

A: Average deviation can be calculated by using the following formula:where m(X) = average value of…

Q: Predict the major product of the following reaction. Å OCH3 2) + OCH3 OH Ө OH OH OH 1) MeMgBr OH CHO…

A: We have to identify the correct product of the given transformation.

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

A: Resonance structures are drawn by moving of elecctrons only but not by moving of atoms. Resonance…

Q: Cobalt- 60 is radioactive and has a half life of 5.26 years. Calculate the activity of a 2.6mg…

A: Given :Half life of Cobalt-60 = 5.26 yearsMass of Cobalt sample = 2.6 mgActivity of cobalt-60 sample…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.