6. A sample of Magnesium Chloride (MgCl₂) has a mass of 12.94 g. How many atoms of Clare in the sample? D) CO A) 1.784 X 1023 Cl atoms B) 1.637 X 1023 Cl atoms C) 8.918 X 1022 Cl atoms 022 1 loms-3.221 (3 lomg E81 (C

Q: Citric acid was found to contain 37.51% C, 4.20% H, and 58.29% O by mass. What is the simplest…

A: Given :-  Percent composition of C = 37.51%  Percent composition of H = 4.20%  Percent composition…

Q: a) How many atoms are in 2.50 moles of C02? b)How many cations are there in 10.0g of sodium…

A: The number of atoms present in the given amount of the compound can be evaluated by observing the…

Q: 2. a) How many molecules are in 2.00 moles of H¿O? b) How many hydrogen atoms in 2.00 moles of H,O?…

A: Since you are posted with multiple sub-parts. As per the rule, I am answering first three sub-parts…

Q: OC) 5.06 x 1024 How many atoms of carbon are in 23.1 g of caffeine (C8H10N4O2)? A) 8.00 B) 7.16 x…

A: Formula of caffeine = C8H10N4O2  Mass of caffeine = 23.1 g  Molar mass of caffeine = 8(molar mass of…

Q: 1) Avogadro's Number, Moles, and Molar Mass a) How many xenon atoms are in 1.248 mol of xenon? b)…

A: The objective of the question is to apply the concepts of Avogadro's number, moles, and molar mass…

Q: MgSO4•7H2O what is themolar mass g/mol?

A: We can calculate the molar mass of MgSO4•7H2O by adding the mass of all atoms which are present in…

Q: A sample is found to contain 0.650 mole of a chemical substance. a. How many atoms are present if…

A:

Q: S. A compound contains 29.41% calcium, 23.53% sulfur, and 47.06% oxygen. What's the empirical…

A:

Q: 22. The molar mass of Ba (NO3) 2 is?

A: In this question we need to calculate the molar mass of Ba(NO3)2 we know the molar mass of…

Q: Determine the number of atoms of O in 24.1 moles of Al2(SO,)3-

A:

Q: D. Calculate the mass (g) of the following samples. 25) 238 moles of lead 26) 1.54 x 10° moles of Zn…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: 9. What is the percent composition by mass of aluminum in Al (SO4)3 (gram 15.8% formula mass = 342…

A:

Q: 1) How many atoms does each molecule of H,SO, has? A) 8 B) 6 C) 7 2) A compound of carbon and…

A: we have to tell which option is correct from given choices of options by telling  number of atoms in…

Q: What mass of compound is present in 4.10 moles of each of the following compounds? a. b. Mass= Mass=…

A: molar mass of NH3 = 17.03 g/molmolar mass of N2H4 = 32.04 g/molmolar mass of (NH4)2Cr2O7 = 252.06…

Q: 2.050 g of an unknown sample contains H, S, and O. If the compound contains 0.0500 g H and 0.800 g…

A: Total weight of unknown sample = 2.050g  Mass of H = 0.0500g  Mass of S = 0.800g

Q: What mass of AuCl3 (MW 303 g/mol) contains 5.0 x 1023 atoms of Cl? a) 760 g b) 0.83 g c) 120 g d) 28…

A:

Q: Consider a 33.1 g sample of the compound diphosphorus pentabromide How many atoms of phosphorus are…

A: Compound   = diphosphorus pentabromide = P2Br5 Mass of P2Br5 = 33.1g  Molar mass = 461.5 g/mol

Q: If the weight of calcium oxalate is 2g and weight of ammonium oxalate is 0.15 g then te percentage…

A: Given that Weight of  calcium oxalate (CaC2O4) = 2g  Weight of  ammonium oxalate ((NH4)2C2O4) = 0.15…

Q: What mass of AuCl3 (MW 303 g/mol) contains 5.0 x 1023 atoms of Cl?

A: One AuCl3 molecule contains one Au and three Cl atoms.

Q: Tennantite is an ore of copper with the formula Cu12As4S13. How many moles of copper are present in…

A: Answer: Given molecular formula of Tennantite Cu12As4S13

Q: Terephthalic acid is a chemical used to make polyesters, including disposable water bottles. It has…

A: Solution : The molecular formula shows the actual number of each type of atoms present in a…

Q: This is CCl4 with a molecular weight of 119. On a mass basis what percent of the material is…

A: The molecular weight of CHCl3 is 119.38 gmol-1 and that of CCl4 is 153.82 gmol-1 .

Q: The chloride of an unknown metal is believed to have the formula MCl3. A 2.395-g sample of the…

A: Solution stoichiometry involves the calculation of concentration of solutions in the given…

Q: what Mass or NaN3 L6S mol) is needed to produce (28 9 mol-) ? 1.00 g 2 Na Ng 7Z Na+ 3 N2 a) 1.Ss 9…

A:

Q: Tennantite is an ore of copper with the formula Cu12As4S13. How many moles of copper are present in…

A: Number of atoms, ions and molecules present on a given amount can be determined by “Mole Concept”.…

Q: What mass of AuCl3 (MW 303 g/mol) contains 5.0 x 1023 atoms of Cl? a) 760 g b) 0.83 g c) 120 g d) 28…

A: Formula used :-  Number of moles (n) = mass/molar mass

Q: How many grams of gold (Au; atomic mass = 197.0 g/mol) contains 2.5 x 1020 gold atoms?…

A: Number of gold atoms = 2.5 ×1020  Atomic mass of gold = 197 g/mol

Q: What is the mass of exactly 1 mole of each of the compounds? N,O: Fe(CIO),: Fe(CIO, )3:

A:

Q: d. Determine the % of ammonium ions(NH4*) in ammonium phosphate, (NH4)3PO4. e. How many ammonium…

A: Given  mass of ammonium phosphate = 74.5 g

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: How many atoms are there in 0.01267 g of (Na?)

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

Q: 1. a) How many moles of sodium are in 23.0 g of sodium? b) How many atoms of oxygen are in one…

A:

Q: 5. How many atoms in (use Avogadro's number. 6.02X1023 atomic (a) 2.82 mol of Zn (b) 1.5 mol of Cu…

A: The objective of the question is to calculate the number of atoms in given moles of substances, find…

Q: 1.28 x 1023 molecules of C10H22 would have what number of carbon atoms? 6.

A:

Q: If you have a sample of 55.2 grams of LizCO3, how many atoms of Li¿CO3 are in your sample?

A:

Q: 3.2*10^24 atoms O to molecules O3

A: A molecule is composed of two or more than two atoms. The number of molecule can be determined 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.