Calculate the number of atoms in sample. 14.955 g Cr

Q: moles of atoms are in each elemental sample?

A: 1) Using the molar equation- n: number of moles of the elemental sample. m: given mass of the…

Q: How many titanium atoms are in a pure titanium bicycleframe with a mass of 1.28 kg?

A: The number of titanium atoms is in a pure titanium bicycle frame with a mass of 1.28 kg has to be…

Q: Anthracite is a type of coal that is composed of carbon with small amounts of hydrogen, oxygen,…

A:

Q: Determine the number of atoms in 39.0 grams of sodium, Na. (The mass of one mole of sodium is 22.99…

A:

Q: Calculate the number of atoms in a 4.70×1034.70×103 g sample of lithium.

A: 1 mol of a sample contains 6.02×1023 atoms. Number of moles of sample can be determined using the…

Q: Determine the number of atoms in 39.0 grams of calcium, Ca. (The mass of one mole of calcium is…

A: Mass of calcium = 39.0 grams Mass of 1 mol of calcium = 40.08 g. Number of atoms = ?

Q: A pure silver ring contains 4.55×1022 silver atoms. How many moles of silver atoms does it contain

A: A mole of a substance is equal to as many entities (atoms , molecules and ion ) as there are number…

Q: Calculate the number of atoms in sample. 2.26 g Hg

A:

Q: Identify the number of atoms of silver that are in 0.2124 moles of silver

A: Given - - > Number of mol of silver = 0.2124 mol   We known that, 1 mol of atoms = 6.022 x 1023…

Q: Determine the number of atoms in 19.0 grams of sodium, Na. (The mass of one mole of sodium is 22.99…

A: Given: Mass of sodium=19.0 g Mass of one mole of sodium=22.99 g The number of atoms in 19.0 g of Na…

Q: Calculate the number of atoms in a 2.09×1032.09×103 g sample of strontium.

A: Calculate the number of moles of strontium (Sr):

Q: What is the amount, in moles, of each elemental sample? 11.8 g Ar

A: Given : mass of Ar = 11.8 g

Q: Calculate the number of atoms in a 8.97×103 g sample of lithium.

A: The value is given as follows:

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: What are the steps that we should take to find the number of atoms of Ag given 1.15g of silver?

A: Find the number of atoms of Ag given 1.15 g of silver ?

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 67.0 grams of sulfur, S. (The mass of one mole of sulfur is 32.07…

A: Given  Mass of Sulfur  = 67 gram  Molar mass of Sulfur = 32.07 gram/mole Number of atom = ?

Q: Aluminum (Al) is element 13 on the periodic table. A sample contains 4.56×1022 atoms of Al.…

A: In this question, we will calculate the amount of Al in grams unit.  You can see below.

Q: Calculate the mass of 4.53 × 1021 chromium atoms in grams.

A:

Q: Determine the number of atoms in 69.0 grams of nickel, Ni. (The mass of one mole of nickel is 58.69…

A: One mole of any substance contains the avogadro's constant 6.022×1023 of molecules.

Q: How many atoms does hydrogen have

A: Calculate no. of  atom in hydrogen=?

Q: Lead (II) Nitrate Element #1 Element #2 Element #3

A: Chemical formula of lead nitrate is Pb(NO3)2 Atomic mass of Pb = 207g/mol Atomic mass of nitrogen =…

Q: Calculate the number of atoms in sample. 1.87 g Bi

A: Calculate the number of moles of Bi Number of moles of Bi = Given mass of BiMolar mass of Bi= 1.87…

Q: A compound consists of carbon and hydrogen. The molar mass of this compound is 44.1 g/mol. The…

A: Molecular formula of any compound can be determined by knowing the number of moles of each element…

Q: Calculate the number of atoms in 4.82 moles of magnesium

A: Since each molecule of magnesium has only 1 atom of magnesium  => number of molecules of Mg =…

Q: The total number of atoms in CI2

A: Atom are the smallest unit of the chemical species. The total number of atom present in the…

Q: Determine the number of atoms in 63.0 grams of calcium, Ca. (The mass of one mole of calcium is…

A: Given : Mass of 1 mole of calcium = 40.08 g And mass of calcium = 63.0 g

Q: Find the total number of atoms in a sample of cocaine hydrochloride, C17H22CINO4, of mass 23.5 mg.

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it…

Q: Determine the number of atoms in 81.0 grams of calcium, Ca. (The mass of one mole of calcium is…

A: Atomic weight of any element contains contain Avogadro number of atoms. Here mass of 1 mole of…

Q: calculate the number of atoms in 4.82 miles of magnesium

A: 1 moles of magnesium contains  Avogadro numbers of magnesium atoms       Avogadro numbers  =…

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: Determine the mass in grams of 7.06 × 10²¹ atoms of barium. (The mass of one mole of barium is…

A:

Q: Determine the mass in grams of 5.79 × 10²¹ atoms of barium. (The mass of one mole of barium is…

A: Given no. Of atoms of barium = 5.79 x 10²¹  1 mole of barium = 137.33 g

Q: Determine the number of atoms in 35.0 grams of nickel, Ni. (The mass of one mole of nickel is 58.69…

A: Given, Mass of Ni = 35.0g

Q: Determine the number of atoms in 61.0 grams of bromine, Br. (The mass of one mole of bromine is…

A:

Q: Calculate the number of atoms in a 8.41×103 g sample of carbon.

A:

Q: Calculate the number of atoms in a 9.06×103 g sample of strontium.

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

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

A: Given,  2.7 mol of sulfur

Q: Determine the number of atoms in 13.0 grams of calcium, Ca. (The mass of one mole of calcium is…

A: Given, mass of Calcium = 13.0 g Mass of one mole of calcium = 40.08 g i.e Its molar mass is 40.08…

Q: How many atoms are present in 44.96 g of scandium? atoms

A: Given mass of scandium is 44.96 g Molar mass of scandium(Sc)=44.96 g/mol

Q: Calculate the number of atoms in sample. 97.552 g Sn

A: We know that the 1 mole of a substance consists of 6.023*1023 number of atoms. (Mass of one mole of…

Q: A compound composed of tin (Sn) and oxygen (O) weighs 8.42 g. Decomposition of the compound produced…

A: mass of O = 8.42-6.63                    = 1.79 g

Q: Calculate the number of atoms in sample. 0.082 g Sr

A: given sample is 0.082 g of Sr we know 1 mol has 6.022 × 1023 atoms

Q: Determine the mass in grams of 5.66 × 10²¹ atoms of barium. (The mass of one mole of barium is…

A: Given,

Q: How many moles of atoms are contained in 4.5 × 10 power 22 atoms of copper

A: Given information:Number of copper atoms = 4.5×1022

Q: How to calculate ionic mass

A: An ion is formed by the gain or loss of electrons.A cation (positively charged species) is formed…

Q: 1. Calculate the number of moles AND the mass in grams of a sample of Neon containing 2.790 X 1025…

A:

Q: Determine the number of atoms in 51.0 grams of sodium, Na. (The mass of one mole of sodium is 22.99…

A: Given : mass of Na = 51.0 g And mass of 1 mole of Na = 22.99 g

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.