Determine the number of sodium atoms in 49.78 g of the element.

Q: Determine the number of molecules in 23.6 grams of CH₄.

A: Given : Mass of CH4 = 23.6 g

Q: calculate the number of atom in 2.34 grams of Ca.

A: Given: Mass of Ca= 2.34 g To determine: The number of atoms in 2.4 g of Ca=? 1 mol of Ca contains…

Q: Calculate the number of atoms in a 3.36 x 10³ g sample of boron. Macmillan Learning number of atoms:

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

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: Complete the table. Element Mass Moles Number of Atoms Pt 0.0449 Fe 1.14 x 1025 Ti 23.8 mg Hg 2.05

A: Pt : Mass of Pt = moles x molar mass = 0.0449 x 195 = 8.76 g Number of atoms of Pt = moles x…

Q: 1.2x10^23 gold atoms calculate into mass, in grams

A: Given:Number of gold atoms = 1.2 x 1023 atoms.Molar mass of gold (Au) = 199.97 g/mol.

Q: Determine the number of atoms in 39.0 grams of sodium, Na

A: Molar mass = mass of 1 mole 1 mole = 6.022 x 1023 entities

Q: number of atoms in 37 g of vanadium

A:

Q: Determine the number of atoms in 11.0 grams of nickel, Ni.

A: Given- Weight = 11.0 gm

Q: Magnesium oxide contains 50.3 % magnesium by mass. Calculate the mass of magnesium oxide sample if…

A: Mass percent of an element expressed as the percentage ratio of mass of an element to the mass of a…

Q: A sample of pure carbon disulfide has a mass of 45.05 g. How many molecules of carbon disulfide…

A: Number of mols = weight / molecular weight  Number of molecules  = number of mols × 6.023 × 1023

Q: Calculate the number of atoms of chlorine in a 6.56×106 g6.56×106 g sample of chlorine.

A: We know,  Avogadro number of atoms are present in 1 moles of a compound .The Avogadro number is…

Q: Calculate the mass of iron in the solid unknown sample. total mass of K3Fe(C2O4)3 x 3H2O is =…

A: The question is based on mole concept.We need to calculate mass of iron present in the given sample.

Q: A sample of hydrogen sulfide, H2S, has a mass of 56.75 g. Calculate the number of hydrogen sulfide…

A: Number of molecules can be calculated by using following formulaNumber of molecules = moles ×…

Q: Determine the number of atoms in 77.0 grams of bromine,  Br ( The mass of one mole of bromine is…

A: Number of moles of a substance is equal to the mass of the substance divided by its molar mass.

Q: A certain compound X is composed of 70.53% carbon, 13.02% hydrogen, and the remainder is nitrogen.…

A: Given values: Percentage of carbon = 70.53 % Percentage of hydrogen = 13.02 % Percentage of nitrogen…

Q: Determine the number of atoms in a 48.3-g sample of zinc.

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: Determine the number of atoms in a 3.57g same of carbon

A: Since Carbon (C) is a mono atomic element hence number of atoms of C = moles X Avogadro's number…

Q: Determine the number of atoms in 3.50 g of gold.

A: Given data- Number of atoms in 3.5 Gold .Molar mass of Au=196g/mol

Q: Determine the number of atoms of C in 11.8 grams of C₆H₁₂O₆.

A: Since, Moles is the ratio of mass to the molar mass of that atom or molecules. Also, Number of atoms…

Q: Determine the number of atoms of C in 42.8 grams of C₆H₁₂O₆.

A: The objective of this question is to find out the number of carbon atoms in a given mass of glucose…

Q: Calculate the number of atoms of gold in a cube of gold that is 1.00 cm on each side.

A: We need to find the number of atoms of gold in a cube of gold that is 1.00 cm on each side. We know…

Q: Determine the number of atoms of C in 15.0 grams of C₆H₁₂O₆.

A: Given, mass of C₆H₁₂O₆ = 15.0 g Number of atoms of C in 15.0 grams of C₆H₁₂O₆ = ? Note: molar mass…

Q: How many copper atoms are in 2.35 g of copper

A: Molar mass of a substance is the mass of 1 mol of it. One mol of substance has Avogadro number of…

Q: Calculate the mass in grams of carbon in a 1 carat diamond that contains 1.32x1022 atoms of carbon.

A: Given the number of C atoms present in the 1 carat diamond = 1.32*1022 atoms We have to convert the…

Q: Convert between moles and numbers of atoms. A sample of lithium contains 2.24x1025 Li atoms. What…

A:

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: Calculate the mass of 3.57 mol of vanadium.

A:

Q: A brass alloy contains 78.6% copper, Cu, by mass with the remainder of the alloy being zinc, Zn.…

A:

Q: Determine the number of atoms in 21.0 grams of sulfur, S. (The mass of one mole of sulfur is 32.07…

A: Number of moles (n)          = mass/molar mass  n = 21g/ 32.07 g/mol     = 0.655 mol

Q: convert 1.89 • 1024 atoms of carbon to moles of carbon

A: Calculation of moles of Carbon :

Q: Determine the number of moles in 234 g of F,

A: Given  Mass of F2                 = 234 gram  Number of Moles   = ? Molar mass of F     = 19 gm/mole…

Q: Calculate the number of atoms in a 6.87 x 10 g sample of calcium. number of atoms: atoms

A: Molar mass of calcium is 40g/mol. Now we have to calculate number of atoms.

Q: Calculate the number of atoms of iodine in a 5.25×106 g5.25×106 g sample of iodine.

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

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

A: Information of question ,

Q: calculate the number of atoms in 1.72 grams of barium

A:

Q: A brass alloy contains 87.7% copper, Cu, by mass with the remainder of the alloy being zinc, Zn.…

A:

Q: A sample of trifluoroacetic acid, C,HF,02, contains 25.3 g of fluorine. Calculate the mass of the…

A: One molecule of C2HF3O2 contains 2 atoms of carbon, 1 atom of hydrogen, 3 atoms of fluorine and two…

Q: Determine the mass, in grams, of 0.130 moles of I (1 mol of I has a mass of 126.90 g).

A: A mole is thus the mass of a compound in grams that equals the masses of the elements that is…

Q: determine the number of atoms of 23.64g of Ce

A: Given, mass of Ce = 23.64 g Molar mass of Ce = 140 g.mol-1

Q: Calculate the mass of 700 atoms of nitrogen (N).

A: Given, number of nitrogen(N) = 700 atoms we are asked to calculate the mass of 700 atoms of…

Q: Determine the number of sulfur atoms in 2.7 mol of sulfur.

A: Given,  2.7 mol of sulfur

Q: Calculate the mass of 7.98x10 molecules of Zinc 27

A:

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.