How many atoms are in 20.5 g of carbon-12?

A: For  calculating the mass of substance , we have the governing equation  m=NA×Molecular weight ,…

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A: Given, moles of W= 6.62 mol Molar mass of W = 184g/mol (from periodic table)  Mass in grams = ?

A: Since number of moles of atom = mass of atom / Atomic mass of atom

A: we know that one mole of copper contain Avogadro's number of atoms Avogadro's number= 6.023 × 1023

A: 1 mole = 6.022×1023 [ Avogadro's number ] Anything with this number is said to be one mole For…

A: Given, number of atoms of copper =557 we are asked to calculate the mass (in grams) of 557 copper…

A: 1 mole = 6.022×1023 [ Avogadro's number ] If any metal consists of 6.022×1023 atoms it is said to…

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A: The question is about calculating the mass of Nitrogen in a 169 g sample of the substance -

A: Given- number of Molecules =2.4 ×10^24 molecules

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

A: Mass of aluminium sample=4.55 g The atomic mass of aluminum =26.982 u Moles of aluminium=4.5526.982…

A: Balanced reaction taking place is as follows: Molar mass of Fe = 55.845 g/mol Molar mass of O2 = 32…

A: 1 mole of a substance is equal to the Avogadro number of atoms.  1 mole =6.022 x 1023 atoms.

A: We know that, 1 mol = 6.022 × 1023atoms Thus, we have 1 mol of 12C

A: Given Mass of KCl produced = 4.40 g To find Mass of O2 produced in the experiment.

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as…

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A: Molar mass of Argon is 39.95 g/mol i.e 1 mole of argon = 39.95 g of Argon Number of atoms of Argon…

A: To determine the mass in grams of 6.022x1023 N atoms of mass 14.01 amu Given that: Mass of each atom…

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A: Quartz is SiO2 and its molar mass is 60.084gmol-1  So, first calculate the moles of SiO2  moles of…

A: The objective of the question is to calculate the mass of a sample containing 1.00 mol of atoms, 33%…

A: We have to calculate the mass, in grams, of 557 copper atoms.

A: given, number of molecules of O2 = 1.8×1021 molecules the molar mass of O2 = 32 gmol-1 avogadro…

A: Given that ; We have to determine the mass of sugar (in g) that consists of 1.25 x 1024 atoms of…

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A: Given: Oxygen is combined with iron to give iron(II) oxide. Mass of iron = 94 grams.

A: GOLD, molar mass of Au = 196.97 g/mol atoms of Au = 6.023 x 1023

A: Given: The number of atoms of Rhenium(Re)=3.50×1018  The atomic mass of Re=186.207 u

A: We have to predict the number of atoms of N.

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A: We have to find grams of C are present in 4.84 grams of carbon dioxide

A: Given,  The mass of sulfur present in 9.05 × 1023 atoms of sulfur is:

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A: Number of moles is calculated by dividing the given mass with molecular mass. Given molecular mass…

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A: You have given - Moles of He = 3.75 mol

A: 3.02×1023 atomsExplanation: