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

Q: What is the mass of 4.91×10214.91×1021 platinum atoms?

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

Q: What is the mass of 24.1 mol of xenon? 131 g 3.16 x 103 g 24.1 g 145 g

A:

Q: What is the mass in grams of 6.62 mol W

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

Q: How many moles of Al are there in 41.5 grams of Al?

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

Q: How many moles are there in 2.75 x 10^24 atoms of copper?

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

Q: how many moles of gold is 2.56 x 1026 atoms of gold

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

Q: What is the mass, in grams, of 557 copper atoms?

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

Q: How many moles of atoms are there in 2.12 x 10 43 atoms of Nickel?​

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

Q: What is the mass in grams of 4.2 x 10^22 atoms of Zn ?

A:

Q: A substance contains 35.0 g nitrogen, 5.05 g hydrogen, and 60.0 g of oxygen. How many grams of…

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

Q: How much would 2.4 x 1024 molecules of N2O5 weigh?

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

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: lver

A: How many grams are there in 2.30x1024 atoms of silver? 1 mole of silver mass is 107.9g 1 mole…

Q: The atomic mass of aluminum is 26.982u. How many alluminum atoms are in a 4.55g sample of aluminum?

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

Q: How many grams of iron are combined with 45.1 grams of oxygen to make the iron(II) oxide compound?

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

Q: How many silver atoms are contained in 1.75 moles of silver?

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

Q: What is the mass (in grams) of 6.022*1023atoms of 12C

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

Q: In an experiment, a specific amount of KClO3 is allowed to decompose to produce 4.40 g of KCl. How…

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

Q: What is the mass in grams of 68.3 mol Xe?

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

Q: How many grams of F are there in 4.29 moles of F?

A:

Q: What is the mass of 1.6x10^21 argon atoms?

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…

Q: What is the mass in grams of 6.022 * 1023 N atoms of mass 14.01 amu?

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

Q: How many moles of silver are 1.8x10^20 atoms of silver ?

A:

Q: In 1.99 g of quartz, how many oxygen atoms are there?

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

Q: What is the mass of a sample containing 1.00 mol of atoms, 33% of them N and 67% of them O?

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

Q: What is the mass, in grams, of 557 copper atoms?

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

Q: What is the mass of 1.8 x 10^21 molecules of O2?

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

Q: How many grams of sugar C12H22O11 that consists of 1.25 x 1024 atoms of hydrogens?

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

Q: A substance contains 3.024 g hydrogen, 30.97 g phosphorus, and 64.00 g oxygen. How many grams of…

A:

Q: How many grams of oxygen are combined with 94 grams of iron to make the iron(II) oxide compound?

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

Q: What would the mass be of Gold, if you had 6.02 x 10^24 atoms of

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

Q: What is the mass of 3.50 billion billion atoms of rhenium?  (One billion billion is 1 x 10^18)

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

Q: How many atoms of nitrogen are there in 5.00 g N?

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

Q: How many atoms of copper are there in 0.0075 g of copper?

A:

Q: How many grams of C are present in 4.84 grams of carbon dioxide ?

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

Q: How many grams are in 9.05 x 1023 atoms of sulfur?

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

Q: How many moles of arsenic are there in 6.50 g of arsenic?

A:

Q: How many atoms of calcium are there in 10.0 g of calcium?

A:

Q: How many grams of Si are there in a sample of Si that contains the same number of moles as a 55.6…

A:

Q: What is the amount, in moles, of each of the following substances? A)12.6 g Ar B)3.50 g Zn C)26.5…

A: Welcome to bartleby !

Q: Mass, S s of 32.07 g).

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

Q: How many grams of iron are combined with 62.2 grams of oxygen to make the iron (II) oxide compound?

A:

Q: How many helium (He) atoms are there in 3.75 moles of helium?   3.75 x 1023 atoms 3.99 x 1025 atoms…

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

Q: how many atoms are in 54.2 grams of silver?

A: 3.02×1023 atomsExplanation: