A 1.912-g sample of calcium chloride is decomposed into itsconstituent elements and found to contain 0.690 g Ca and1.222 g Cl. Calculate the mass percent composition of Caand Cl in calcium chloride.

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

A: According to the answering guidelines, I'm posting the solution for the first question. Kindly post…

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: Question attached

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Calculate the mass percent of H in B4H9CI. %

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Q: Suppose you have a sample of sodium weighing 11.50 g. How many atoms of sodium are present in the…

A: Given,Sodium weight 11.50 gMolar mass of sodium 22.989769 g/ mole

Q: 16. The mineral enargite is 48.41% Cu, 19.02% As, and 32.57% S by mass. What is the empirical…

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

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Q: The density of Bi at 25 °C is 9.808 g>cm3. How many Bi atoms are present in a cube of the element…

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Q: A rock is 5.0% by mass fayalite (Fe₂SiO₄), 7.0% by massforsterite (Mg₂SiO₄), and the remainder…

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Q: Boron has two naturally occurring isotopes, ¹⁰B (19.9%)and ¹¹B (80.1%). Although the B₂ molecule…

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Q: Calculate the theoretical mass percent of barium in BaCl2∙2H2O.

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Q: Calculate the mass percent composition of nitrogen in each nitrogen-containing compound. a. N,0 b.…

A: Calculate the mass percent composition of nitrogen in each nitrogen-containing compound. a. N2O b.…

Q: The density of solid Cr is 7.15 g/cm3. How many atoms are present per cubic centemeter of Cr?

A: Mass = Volume x density Number of moles = Mass/molar mass Number of molecules = 6.0224 x 1023 x…

Q: Without doing any calculations, determine which element in each of the compounds will have the…

A: The mass percent is the ratio of mass of a component to the total mass of the compound, which is…

Q: The mass of 5.20 moles of glucose, C6H12O6 is

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Q: A 1.912g sample of calcium chloride is decomposed into its constituent elements and found to contain…

A: The mass percent of elements is calculated using equation (1) where m is mass of element and M is…

Q: Question attached

A: Mass percentage It is one of the method to express the concentration of a substance The equation…

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

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Q: 73: A 1.912-g sample of calcium chloride is decomposed into its constituent elements and found to…

A: The percent mass composition of an element of a compound gives the concentration of an element of a…

Q: A sample of cyanic acid, HCN, contains  3.33 x 1022 atoms. a. How many moles of cyanic acid are in…

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Q: b. Mass of I- in the sample. O 0.1438 g O 0.1722 g O 0.1623 g O 0.1939 g O 0.1840 g

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Q: 2. A 13.07g sample of an unknown compound is composed of 9.48 g of barium, 1.66g of carbon and 1.93…

A: Empirical formula of a compound is denoted by the proportion of numbers of atoms present in the…

Q: Vanadium forms four different oxides in which the percent by mass of vanadium is, respectively, (a)…

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Q: Zinc sulfide (ZnS) occurs in the zinc blende crystal structure.(a) If 2.54 g of ZnS contains 1.70 g…

A: The mass ratio gives the mass of an element that is found in combination with another element.…

Q: An unknown compound containing tellurium and bromine is analyzed and it is determined that 28.53% of…

A: For a compound consisting of two components A and B, mass% of A abd B are related to each other 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   =…

Q: 4. A 1.628-g sample of a hydrate of magnesium iodide is heated until its mass is reduced to 1.072 g…

A: Answer :- MgI2.8H2O The formula of given Hydrated Magnesium iodide = MgI2.8H2O…

Q: A molecule is found to contain 64.27% by mass C, 7.191% by mass H, and 28.54% by mass O. It’s molar…

A: The given organic compound is made up of C, H and O atoms.  Molar mass of the given compound is 168…

Q: If a sample of ethanol has a mass of 1.34 x 104 mg, d) How many C atoms are in the sample? e) How…

A: Stoichiometry involves the calculation of concentration of solutions in the given conditions of…

Q: Suppose you have a sample of sodium weighing 11.74 g. How many atoms of sodium are present in the…

A: The number of moles (n) of sodium present in the given sample is calculated from the expression (1).…

Q: What is the mass percent composition of S in Al,(50,,? 21.38 % O9.372 % 42.73 % )35.97 % 28.12 %

A: The compound give is Al2(SO4)3. Assuming 1 mole of the compound. Molar mass of Al2(SO4)3 = Atomic…

Q: The mass percent of C in a certain organic compound (C3H8X) is 29.28%. What is the identity of X?

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Q: In 6.9 g of aluminum, there are ______ x 1023 aluminum atoms present

A: Molecular mass of atom contains 6.023 × 10^23 atoms. Molar mass of aluminium is 26.981 g/mol

Q: The carat is the unit of mass used by jewelers, and it is exactly 200 mg. How many carbon atoms are…

A: In international system of unit, there are seven basic units. Out of those seven unit Mole is one of…

Q: A student weighs a sample of carbon on a balance that is accurate to 0.001 g. (a) How many atoms…

A: The mass of carbon (C) is 0.001 g and the molar mass is 12.01 g. The no of moles of C are:  n = 0.01…

Q: Calculate the mass percent of 0 in ClO,F.

A: Given compound is ClO3F  Molar mass of Cl = 35.5 g/mol  Molar mass of O = 16 g/mol  Molar mass of F…

Q: A 67.2-g sample of a gold and palladium alloy contains 2.49x10^23 atoms. What is the composition (by…

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Q: A 0.500 g sample of tin foil reacted with oxygen to give 0.635 g of product. (a) What is the…

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Q: What amount of CuSO4•5H,O, in moles, does this mass represent? mass = 1.787 g %3D X mol resubmit…

A: Given : Mass of CuSO4.5H2O = 1.787 g And molar mass of CuSO4.5H2O = 249.69 g/mol.

Q: 127: An iron ore contains 38% Fe203 by mass. What is the maximum mass of iron that can be recovered…

A: 127. Given information, An iron re contains 38% Fe2O3 by mass Mass of iron ore = 10.0 kg

Q: The mass in grams of iodine in a sample of BaI 2 that contains 15.7 grams of barium is

A: The moles of Barium ion is calculated as follows,

Q: Calculate the mass percent composition of nitrogen in each following nitrogen compounds B. BN C. NO2…

A: The mass percent of N = (Total Molar Mass of N in the compound / Molar Mass of compound) * 100%

Q: Upon heating, a 2.500 g sample of hydrated magnesium chlorate, Mg(ClO3)2 loses 0.903 g of water.…

A: A numerical problem based on determination of number of hydration, which is to be accomplished.

Q: A sample of terbium contains 3.01×1025 atoms. What is the total mass of this sample?The molar mass…

A: It is required to calculate the mass of 3.01 x 1025 atoms of terbium and the molar mass is 158.9…

Q: A combustion analysis of 5.214 g of a compound yields 5.34 g CO, 1.09 g HO, and 1.70 g N. If the…

A: Correction: It should be CO2  not CO It should be H2O not HO It should be N2 not N Given, Mass of…

Q: 2. Determine mass (in g) of CO that contains 5.50 x 108 atoms

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Q: A 1.912-gg sample of calcium chloride is decomposed into its constituent elements and found to…

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Q: What mass of (NH4)2SO4 must be mixed with 45 kg of KNO3 to produce a fertilizer that has a 17.6 mass…

A: NH42SO4 is mixed with 45 kg of KNO3We have to find mass of NH42SO4 added to obtain the final mass…

Q: if 4.04g of n combines with 11.46g of o to produce a compound with a formula mass of108.0 amu, what…

A: Given data,  Mass of N = 4.04 g  Mass of O = 11.46 g  Formula mass of the compound = 108 amu

Q: 9. Explain how the atomic mass unit (amu) is defined and explain how the definition of an amu, in…

A: amu i.e atomic mass unit is the unit used to express mass .  Avogadro's number = 6.0221 × 1023

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.