Boron has two naturally occurring isotopes, ¹⁰B (19.9%)and ¹¹B (80.1%). Although the B₂ molecule does not existnaturally on Earth, it has been produced in the laboratory andbeen observed in stars. (a) How many different B₂ moleculesare possible? (b) What are the masses and percent abundancesof each?

Q: An Organic compound contains 59.00% by mass C, 7.15% by mass H, 7.65% by mass N, and 26.20% by mass…

A: Given data is as follows: The elements are given in percent which is out of 100. So, the mass of C =…

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A:

Q: (a) In the certain hydrated salt MSO3-4H20, the mass percentage of H2O is 44.71%. Identify the…

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Q: Tantalum (Ta) and boron (B) form two binary compounds with the following compositions: Compound Mass…

A: As ratio of Ta in compound 1 and 2 per gram of B is 8 : 3 Compound 1 contain 8 Ta and compound 2…

Q: |\ S ১ 0SS 0 ५, ४)0° atonas of gold, Au?

A: As we know that, 1 mole of Ag contains 6.022 × 1023 atoms. Therefore, 4.50 × 1022 atoms will have  =…

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A: (a) The empirical formula can be defined as the formula written in the simplest ration of the…

Q: 2. Which compound (C12H22011 or NH,CI )contains the most total number of atoms?

A:

Q: Cyclopropane is an interesting hydrocarbon. Instead of havingthree carbons in a row, the three…

A: a.

Q: A metal (M) forms an oxide with the formula M2O. If the oxide contains 16.99% O by mass, what is the…

A: The given data contains, mass of Oxygen = 16.99 g. Thus mass of M= 100-16.99 = 83.01 g.

Q: 3) How many total atoms are there in 34.2 g of CH3CO2H?

A: Given, amount or mass of CH3COOH =34.2 gwe are asked to calculate the total number of atoms in 34.2…

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A: Mole in terms of particles : 1 mol = 6.022 x1023 particles  where particles =…

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A: The given ratio of mass O to the mass of N in N2O3 is 12:7 Mass of O in N2O3 = 3x16 amu…

Q: p3, mass n03 %3D

A:

Q: On a periodic chart of the elements, molar mass (M), also called atomic weight, is often listed as…

A: A chemical compound consists of two or more different elements which are bonded with each other…

Q: A chemist heats a 6.4 sample of hydrated calcium sulfate, and finds that in the process, 3.4 grams…

A: Given data Ammount of hydrated calcium sulphate = 6.4 g Amount of water vapour lost = 3.4 g Reaction…

Q: Explain the difference between the terms molecularmass and formula mass. To what type of…

A: The difference between molecular mass and formula mass has to be explained and the type of compound…

Q: The mass spectrum of an organic compound shows the relative abundances of M to be 87.83% and M+ 1 to…

A: Relative abundance/intensity of M+1 peak = 11.40 % Relative abundance/intensity of M peak = 87.83 %…

Q: (a) In the certain hydrated salt MSO3-4H20, the mass percentage of H20 is 44.71%. Identify the…

A:

Q: Calculate the number of atoms of silicon (Si) in 415 cm3of the colorless gas disilane at 0°C and…

A: GIVEN: Density of disilane =  0.00278 g cm-3 Volume of disilane = V=415 cm3   The molecular formula…

Q: The semi-precious stone turquoise is a hydrate and with the chemical formula CuAl₆(PO₄)₄(OH)₈･4 H₂O.…

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Q: What 19K, 12 Mg, 13Al elements give with go The formulas of the compounds which are- well shown…

A: potasium is 1st A group member which is stable in +1 oxidation state Mg and Al are 2nd A and 3rd A…

Q: 3. Name the following 1onic compounds. (a) Cal; (b) K;P (c) AIF; (d) Ag,S (e) Cs,CrO4

A:

Q: Nitrogen forms more oxides than any other element. Thepercents by mass of N in three different…

A: Empirical Formula: The empirical formula of a compound is the simplest whole number ratio of each…

Q: There are ________ atoms of hydrogen in 300 molecules of CH3CO2H.

A: It is given that there are 300 molecules of CH3CO2H.

Q: How many grams of K2C2O4, potassium oxalate, would containe 182 grams of pure potassium?

A: The molar mass of potassium oxalate can be calculated as:

Q: 2. A given sample of caffeine, C,II,N,0, has 0.23 g of carbon atoms in it. Hle nitrogen atoms are…

A: Mass of C atom = 2.3 g  Molar mass(MM) of C = 12 g/mol Moles of C = mass/MM          = 2.3/12   =…

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A: Introduction: Molar mass is the mass of 1 mole of a substance in a gram. It is also called molecular…

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A: Molecular-Mass: Molecular mass is the sum of atomic masses of the elements present in a molecule. It…

Q: Give the number of atoms of the specified element in aformula unit of each of the following…

A:

Q: Calculate the number of atoms of hydrogen (H) in 323 cm3 of the colorless gas ethylene at 0 °C and…

A: 1 mole of C2H4 (ethylene) has 2 moles of carbon and 4 moles of hydrogen in it.1 mole of any…

Q: The number of nonmetallic atoms in Al2 (SO3 )3 is?

A: The given compound is Al2(SO3)3. In periodic table right end elements are non metals and left end…

Q: Explain the following statement: The smallest particles uniqueto a compound cannot be atoms

A: A compound can be described as a substance consisting two or more elements present in unique…

Q: an oxide of iron has the formula Fe3O4. what mass percent of iron does it contain?

A: Molar mass of Fe = 55.845 g/mol.Molar mass of O = 15.999 g/mol.

Q: d) How many atoms of hydrogen are in 1.0 mol dimethylnitrosamine? e) What is the mass of 1.0 x10°…

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Q: How many atoms of hydrogen are found in 7.12 mol of pentane, C5H12?

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Q: 2. Explain how the chemical formulas H (aa and H.O for the same thing. are interchangeable notation…

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Q: Monel metal is a corrosion-resistant copper-nickel alloy used in the electronics industry. A…

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Q: 14. The fertilizer ammonium sulfate [(NH,),So,] is prepared by the reaction between ammonia (NH3)…

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Q: How many of the indicated atoms are represented by eachchemical formula: (a) carbon atoms in…

A: The number of indicated atoms present in each chemical formula are:

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Q: Which one of the following statements about the compound C3H4 is CORRECT? Oa. One mole of C3H4…

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Q: Which of the following compounds is a nonelectrolyte? a. acetic acid, CH3COOH b. hexane, C6H14 c.…

A: A compound which is not change into ions is known as non electrolyte.

Q: 2. How many moles would there be in 500 atoms of Silver? - 3. What is the mass of exactly 230 Sodium…

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Q: 2. A 2.300 g sample of CuxCl, zH₂O weighed only 1.950 g after heating. Aft aluminum was added, a…

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Q: 1)Describe the PHYSICAL PROPERTIES of the following substances? 2)Specifically, what type of…

A: Physical properties of following substances. 1. Halogen : Halogens are non metals. Fluorine and…

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A: Isotopes are elements with the same number of protons but differ in the number of neutrons. The…

Q: How many of the indicated atoms are represented by eachchemical formula: (a) carbon atoms in…

A: The number of indicated atoms present in each chemical formula are:

Q: alculate (to the nearest 0.1 u) the formula mass of these compounds. (a) rubidium nitrate, RbNO3…

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Q: An antacid tablet weighing 0.928 g contained calcium carbonate as the active ingredient, in addition…

A: Since you have posted multiple un-related questions, we are entitled to answer the first only.

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.