What is the formula of a compound in which a sample of the compound contains 0.250 moles Ca and 0.500 moles Br?   CaBr   Ca2Br   Ca3Br2   CaBr2

Q: Determine the empirical formula for a compound that is found to contain 10.15 mg P and 34.85 mg Cl.…

A:

Q: Calculate the number of C atoms in 0.872 mol of C? Calculate the number of SO2 molecules in 8.44…

A: The answers to the first three questions are given as:

Q: A sample of sulfolane, C.H3O,S, contains 5.00 x 1024 atoms. How many moles of sulfolane are in the…

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Q: What mass of compound is present in 6.10 mol of each of the following compounds? Mass =  g…

A: Given Number of moles = 6.10 Molecular Mass of Ca3(PO4)2 = 310.18 gram/mol Molecular mass of Na2HPO4…

Q: A model of the butanal molecule is shown in the window below. ball & stick + labels ited a. How many…

A: From the model, Butanal=> CH3>CH2CH2CHOMolecular formula of butanal is C4H8O. Mole is the SI…

Q: Complete the table. Element Moles Mass Cr 0.00442 Fe 73.5 mg Ti 1.009 x 10-3 Hg 1.78 kg

A: Mole is represented by the symbol mol. It is unit of measurement of substance. Mass is defined as…

Q: Never heat the mixture until the distillation flask is dry as this may cause an explosion. O True O…

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Q: A mineral sample is obtained from a region of the country that has high arsenic contamination. An…

A: First calculate percentage ratio  of mole then form formula

Q: 13. How many moles are represented by 3.01·10“ helium atoms? 5 moles 0.75 moles 0.50 moles 1 mole

A: Given: no of helium atoms = 3.01 x 1023 atoms We know that, Avogadro number, NA = 6.02 x 1023 atoms

Q: A compound contains, by mass, 81.7% carbon and 18.3% hydrogen. A 0.15 mole sample of this compound…

A: Given  % Carbon  = 81.7 %  % H   =  18.3 %  Number of mole     = 0.15 mole  Mass of compound = 6.6…

Q: If the empirical formula of a compound is P2O5, what could be a possible molar mass of the molecular…

A: molar mass of P2O5 :

Q: What is the empirical formula of a compound that is 62.0% C, 10.4% H, and 27.5% O by mass? C6HO3…

A: Given, percentage of C = 62.0 % percentage of H = 10.4 % percentage of O = 27.5 % we are asked to…

Q: How many molecules of sulfur tetrafluoride are present in 3.45 moles of this compound?  molecules…

A: Moles of sulphur tetrafluoride=3.45mol

Q: Complete the table below for calculating the molar mass of the compound disulfur decafluoride.

A: We have given a compound disulfur decafluoride. We have to complete the given table for calculating…

Q: Calculate the moles of glucose in 1.0253 g of glucose, C6H12O6. Then calculate the moles of each…

A: Given :-  Mass of glucose = 1.0253 g  To calculate :-  Number of moles of glucose and also determine…

Q: What is the empirical formula for an unknown organic compound, if the compound contains 75% carbon…

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Q: Which sample has the greatest amount of atomic nitrogen? 33.0 g of N2O 3.01 × 1023 molecules of N2…

A: The objective of the question is to determine which of the given samples contains the greatest…

Q: How many molecules are there in 0.500 moles of sugar, CgH1206? 90 molecules G 3.01 x 10 23 molecules…

A: Given : Moles of sugar = 0.500 mol.

Q: Complete the table of compounds that contain only car- bon and hydrogen. % c % H Formula Molar Mass…

A: Alkanes are saturated compounds containing only carbon and hydrogen atoms. These are also called as…

Q: A 10.68 g sample of compound that contains only carbon, hydrogen, and oxygen was analyzed through…

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Q: Caffeine has the formula C8H10N4O2 . If an average cup of coffee contains approximately 125 mg of…

A: In the international system of units the mole (symbol: mol) is the quantity unit for measurement…

Q: What mass of compound is present in 7.60 moles of each of the following compounds? a.) Ca3(PO4)2 b.)…

A: In chemistry, number of moles refers to a unit of amount. It can also be defined as the mass of a…

Q: how many moles (of molecules or formula units) are in each sample? express your answer to four sig…

A: We know , number  of moles in any species/compound is given as : =mass of given…

Q: The molecule CH2CHCH3CH2CHF(CH3)2CCH3 contains H atoms 1. 16 2. 22 3. 18 4. 20

A: The given compound is CH2CHCH3CH2CHF(CH3)2CCH3  we need to calculate total number of hydrogens

Q: Holy many moles of CO2 are contained in 42.0 x 1024 molecules of CO2?

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Q: Determine the number of moles of xenon in 12.0 g of xenon. O 7.62 x 10 -3 mol O 0.0457 mol O 1.00…

A: We can determine the number of moles of a substance from the mass and molar mass of the substance.…

Q: How many Chromium atoms are present in a 5.00 mole ?sample of Al2(Cr207)3 None of them x 1024 9.03 x…

A: We have given that 1 mole of Al2(Cr2O7)3 contain 6 mole of chromium  Avogadro's number is defined as…

Q: A sample of C₂ H² has 1.76 × 10²4 H atoms. How many carbon atoms does the sample contain?

A: In a molecule of C3H8, the mole ratio of carbon to hydrogen is 3:8.Number of moles of a substance…

Q: If the empirical formula of a compound is P₂O3, what could be a possible molar mass of the molecular…

A: Empirical formula= the empirical formula of a chemical compound is the simplest whole number ratio…

Q: What amount (moles) of compound is present in 6.20 g of each of the following compounds? a.)…

A: In chemistry, number of moles refers to a unit of amount. It can also be defined as the mass of a…

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: First of all, we will calculate the number of moles of each element from given mass and then, we…

Q: A 2.05 g sample of an unknown compound contains H, S, and O. If the compound contains 0.050 gH and…

A: 3rd option is correct that is 58.5%

Q: How many moles of sulfur trioxide are present in 1.02 x 1022 molecules of this compound?  moles…

A:

Q: Determine the empirical formula for a compound that is found to contain 10.15 mg P and 34.85 mg Cl.…

A:

Q: Ethanol has a molecular formula of CH3CH2OH. 1.) What is the molar mass of ethanol? 2.) What is the…

A: 1) molar mass = sum of atomic mass of each atom present  in the molecule  Since in ethanol we have 2…

Q: The molar mass of a compound is the sum of the atomic molar masses for the elements in the compound,…

A: Given, The molar mass of a compound is the sum of the atomic molar masses for each element in the…

Q: Determine the number of moles and molecules of CO2 in a 15.25 g sample of CO2.  Determine the number…

A: In the given question, (i) Number of moles of CO2    (ii) Number of molecules of CO2    (iii) Number…

Q: 5 C + 2 SO2 ➞ CS2 + 4 CO   How many moles of SO2 are required to produce 118.0 mol CO

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Q: Select the number of moles of NaCl in 8.68 x 1025 sodium chloride formula units. O 144 mol NaCl O…

A: Given : Number of formula units of NaCl = 8.68 X 1025

Q: Determine the chemical formula of a compound that contains 20.2% Mg, 26.6% S and 53.2% O.

A:

Q: Calculate the number of moles of glucose (C6H12O6) in a 5.380 g sample

A: Number of moles can be calculated by using the following formula Number of moles=MassMolar mass

Q: An unknown hydrocarbon is subjected to elemental analysis. It is determined to be 85.6% carbon and…

A: Mass % of Carbon = 85.6% Mass % of Hydrogen = 14.4% Empirical formula =?

Q: A.How many molecules of nitrogen trifluoride are present in 2.13 moles of this compound?   B.How…

A: To convert molecules to mole divide by 6.02×10^23 and to convert moles to molecule multiply by…

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.