Lithium forms compounds which are used in dry cells and storage batteries and in high-temperature lubricants. It has two naturally occurring isotopes, 6Li (isotopic mass = 6.015121 amu) and 7Li (isotopic mass = 7.016003 amu). Lithium has an atomic mass of 6.9409 amu. What is the percent abundance of lithium-6?

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 =…

Q: A certain metal, M, forms two oxides, M2O and MO. If the percent by mass of M in M2O is 73.4%, what…

A: The answer is given below

Q: You are working in the laboratory preparing sodium chloride. Consider the following results for…

A: The results has to be explained on basis of law of conservation of mass and definite composition.

Q: A materials engineer has filed for a patent for a new alloy to be used in golf club heads. The…

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Q: An iron-containing compound is 20.1% Fe, 11.5% S, 63.3% O, and 5.1% H. What is the empirical formula…

A: For calculating Empirical formula for compound we follow these steps:(i) calculate %Atomic mass for…

Q: The percentage by mass of nitrogen is 46.7% for a species containing only nitrogen and oxygen.…

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Q: 4.104. When 2.750 g of the oxide Pbạ O4 is heated to a high temperature, it decomposes to produce…

A: Pb3O4     ------>     O2   +  PbxOy Mass of Pb3O4 = 2.750 g  Molar mass of Pb3O4 =  685.6 g/mol…

Q: 1. Ethane gas, C:H6, burns in air (i.e reacts with oxygen in air ) to form carbon dioxide and water:…

A: Ethane combustion to form carbon dioxide and water, from this balanced stoichiometric equation used…

Q: What are the basic units-single atoms, molecules, or for- mula units-that compose each substance?…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: What is the mass of the iron present in 1.04x10^23 units of Fe2O3? (Fe=55.845 O= 16.00)

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Q: Over the years, the thermite reaction has been used for welding railroad rails, in Fez Os (8)+2A1(s)…

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Q: The mass ratio of sodium to fluorine in sodium fluoride ls 1.21:1. A sample of sodium fluoride…

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Q: Calculate the grams of nitrogen in 23.4 g of Ca(NO3)2.  2. Calculate the mass percent of chlorine…

A: The given data : 1.The mass of the Ca(NO3)2 = 23.4 g To determine = The mass of nitrogen 2.…

Q: White sand is made of silica (silicon dioxide, or SiO2), which has a density of 2.20 g/cm³. How many…

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Q: What is the mass of one atom of I? O 4.745 x 10-22 g O 3.443 x 10-22 g O 6.641x 10-23 g O 2.107 x…

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Q: 1. Sodium is an alkaline metal which is very reactive and so is not found free in nature. Sodium…

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

Q: Describe the formation of solid potassium sulfide (K2S) from large numbers of potassium and sulfur…

A: ANSWERE IS DISCUSSED BELOW :

Q: A sugar crystal contains approximately 1.8 x 10" sucrose (C12H2201) molecules. What is its mass in…

A: The molar mass of sucrose (C12H22O11) = 180 g/mol The number of molecules in 1 mole = 6.022 × 1023

Q: Sodium is an alkaline metal which is very reactive and so is not found free in nature. Sodium forms…

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Q: A 3.17 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 4.34 x 1022…

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Q: The number of O atoms in 1 mole of NO2 is A. 2 B. 1.204 x 1023 C. 6.02 x 1023 D. 1.204 x 1024

A: A mole of substance can be defined as a substance which contains exactly 6.022×1023 atoms,…

Q: Coal is a leading source of energy for the world. While coal is primarily composed of carbon and…

A: Given:S(s)+O2(g)→SO2(g)

Q: In hydrogen oxide (H20), the exact value of the % composition of the Hydrogen (H) is ________.…

A: Mass % of an element:

Q: 1.The formula mass of the compound between gallium (III) and oxalate ions in g/mol is: Group of…

A: The formula mass of a compound is the total average atomic masses of each atom which is showed in…

Q: Lithium metal has an atomic radius of 152 pm. The molar mass of lithium is 6.94 g/mol and Avogadro`s…

A: Atomic radius = 152 pm = 152 × 10-10 cm  Avadagro constant = 6.022 × 1023  per mol  Molar mass of…

Q: A 2.62 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 3.59 x 1022…

A: Given  (a)   Mass = 2.62 gram       Number of molecule of N2O  =  3.59 × 1022 molecule       Number…

Q: A 150.0 gram sample of a white powder contains 61.05 g of carbon, 7.65 g of hydrogen, and 81.30 g of…

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Q: Iron is found in Earth's crust as seve pounds. Calculate the mass (in kg) c contains 1.0 X 10° kg of…

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

Q: Calculate the mass (in mg) of 9.85 x 1019 CCl2F2 molecules.

A: The relation between mass and number of moles of a substance is as follows,…

Q: What is the mass of oxygen atoms in 0.305 moles of Fe(CO)5 ?

A: 1 mol Fe(CO)5 contains 5 moles of oxygen atom. Mass of oxygen = number of moles of oxygen × molar…

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

Q: 1. Write the following compounds: a. Barium Selenide b. Magnesium phosphide c. Potassium nitride d.…

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Q: The atomic mass of titanium (Z = 22) is 47.87 amu. How many atoms are present in 45.5 g of titanium?…

A: Mole of a substance or a mole of a particles is defined as exactly 6×10^23 particles which may be…

Q: What is the mass of 4.63 x 1012 atoms of Fe? 9.76 x 10-10 g O 1.62 x 10 10g O 1.08 x 10-10 g O 2.73…

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Q: Stibnite, Sb2S3, is a dark gray mineral from which antimony metal is obtained. What is the mass…

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Q: A sulfide of iron is produced when 2.33 g of iron reacts with 1.926 g of sulfur. What is the…

A: Empirical formula of a compound represents the simplest whole number ratio of the moles of the…

Q: White sand is made of silica (silicon dioxide, or SiO2), which has a density of 2.20 g/cm3. How many…

A: The question is based on mole concept. We have been given diameter of the silicon atom. we have to…

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Q: Explain how the atomic mass unit (amu) is defined and explain how the definition of an amu, in turn,…

A: Avogadro's number is equal to 6.0221 x 1023 number of anything is equal to 1 mole of that thing.

Q: Beryl (emerald) is a precious gemstone with the formula:  Be3Al2(SiO3)6.  MM Be3Al2(SiO3)6  =…

A: a. Given, 1.00 g of beryl

Q: When potassium chromate, K,CrO, is dissolved in water, what ions are produced? no ions are formed K*…

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Q: Formula mass of H20 |(2Н atoms) * (1.01 ати)) + (10 atom) * (16.00 ати)] — 18. 02 ати Water (H2O)…

A: Solution :           Formula mass gives us the sum of the atomic weight of atoms in the formula unit…

Q: A 67.2 g sample of a gold and palladium alloy contains 3.07×1023 atoms . What is the mass…

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Q: Uranium (VI) fluoride (UFe) can be used for the enrichment uranium. What is the elemental…

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Q: 12 1. In mammals, lactose (milk sugar) is metabolized to glucose (C6H₁2O6), the key nutrient for…

A: Give the molecular formula of glucose is C6H12O6 The mass percent of each element in glucose is

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A: Given : Total mass of ethyl mercaptan sample = 3.17 g And mass of sulfur in ethyl mercaptan sample =…

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Q: Find the mass of 2.45 X 1023 molecules of Ca(OH)2? Use: Ca = 42.0g, H = 1.25g and O = 15.7g as…

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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.