a) How many moles of Ar are present in 4.4 g of Ar? b) How many atoms are present in 4.4 g of Ar?

Q: Determine the mass, in grams, of 0.800 moles of Pb (1 mol of Pb has a mass of 207.2 g).

A: Given : Moles of Pb = 0.800 mol And mass of 1 mole of Pb = 207.2 g

Q: How many moles of B are there in a sample of B that contains 2.96×1024 atoms? moles

A: 1.Boron is represented as B 2. Avogadro's number = 6.023× 1023

Q: 3) Show your calculations clearly. Suppose you are provided with a 36.55 g sample of potassium…

A:

Q: how many moles of zinc are present in a 79.5 gram sample of naval brass?

A: Naval Brass is a 60:40 copper zinc alloy to which about 1% of tin has been added to improve the…

Q: How many grams of silicon are present in 2.78 moles of silicon dioxide?

A: Recall the data, moles of SiO2=2.78 moles mass of Si=?

Q: 4. Determine the number of atoms present in 7.85 moles of carbon. C

A:

Q: atoms

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Q: How many atoms of vanadium are in 1.28 grams of vanadium

A: One mole of any chemical substance has Avogadro’s constant or Avogadro’s number of atoms.…

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: 5.5×10^24

A: Please find the file attached for explanation

Q: Tin has 10 stableisotopes. The heaviest, 124Sn, makes up 5.80% of naturally occurring tin atoms. How…

A: Given that,  124Sn isotope makes up 5.80% of naturally occuring tin atoms  Mass of tin sample = 57.0…

Q: How many molecules of trilaurin are present in 3.5 moles of trilaurin?

A: Given: Moles of trilaurin = 3.5 mol

Q: Why is the mass of a mole of carbon atoms 12 times that of a mole of hydrogen atoms?

A: The solution is as follows:

Q: An experiment requires that enough XeOF4 be used to yield 19.2 g of fluorine. How much XeOF4 must…

A:

Q: How many moles of Sn are there in a sample of Sn that contains 2.38x10^24 atoms

A: Number of moles = Given no. of atoms/NA NA = Avogadro's number = 6.022 x 1023 Number of Sn atoms  =…

Q: How number of F atoms in 2.62 moles of F2?

A:

Q: How many atoms of carbon are combined with 6.89 moles of hydrogen atoms in a sample of the compound…

A: In ethane C2H6 , 2 moles of carbon are combined with 6 moles of hydrogen.

Q: What is the mass of 0.00210 moles of K2CO3?

A: Given data: Number of moles of K2CO3 = 0.0021  Formula used: Moles=Given massMolar mass

Q: How many moles of Li are in 1.46 x 1015 atoms of Li? 4.12 x 10-8 mol 4.12 x 108 mol 2.40 x 10° mol…

A:

Q: 1. How many grams of Ca are in 0.25 mol of Ca?

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

Q: O3

A:

Q: 26. Diamond is one form of elemental carbon. An engagement ring contains a diamond weighing 1.25…

A:

Q: Determine the mass, in grams, of 0.465 moles of Pb (1 mol of Pb has a mass of 207.2 g).

A: Stoichiometry involves the calculation of concentration of solutions in the given conditions of…

Q: How many hydrogen atoms are in 2.12 moles of ethane?

A: Moles of ethane = 2.12 mol

Q: How many N atoms in a sample of C7H5(NO2)3 that has the same number of O atoms as 13.0 g C6H12O6?

A: Solution stoichiometry is mainly based on the calculation of moles and volumes. These two values are…

Q: How many moles of aluminum are required to c

A:

Q: How many moles of Be are there in a sample of Be that contains 2.02×1024 atoms?

A: Mole Mole is a quantity that represents a collection of 6.022×1023 atoms or molecules. The term…

Q: 9. Using the following reaction 2NaBr +CaF, →2NAF+ CaBr2 If 6 moles of CaF2 were added, what mass of…

A: Given  moles of CaF2 = 6 moles Molar mass of  CaBr2 = 199.9 gm/mole Mass of CaBr2= ?

Q: How many atoms are in 4.37 mol of carbon-12? How many grams does this much carbon-12 weigh?

A:

Q: How many atoms are present in a Mg sample with a mass of 14.6 grams?

A:

Q: What is the mass of 0.35 moles of sulfuric acid?

A: To calculate the mass of 0.35 moles of sulfuric acid.

Q: Calculate the number of atoms of Fe in a sample with mass = 1899 amu.

A: A sample of Fe of mass  1899 amu.The number of atoms of Fe in a sample is to be calculated.

Q: How many Praseodymium atoms are present in 2.99 moles of Praseodymium ?

A: Given : 2.99 moles of Praseodymium ( Pr) Molecular weight of Pr = 140.91 grams

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

A: We know that, 1 Mole = 6.023 X 10^23 Atoms / Molecules /Ions Number of moles = Given mass / Molar…

Q: How many atoms are in 4.5 moles of Al?

A:

Q: 5) 25 grams of PbSO4 is equivalent to how many moles? a) 0.0824 b) 1.21 c) 1.56 d) 1.98

A: Given data: Grams of PbSO4= 25 g. To find: The number of moles of PbSO4.

Q: How many moles of magnesium are present in 3.01 grams of magnesium?

A: Magnesium is an which is having atomic No. 12. It is an important mineral. It has role in enzyme…

Q: You have a 20.0 g sample of silver metal. You are given 10.0 g of another metal and told that this…

A: The situation is possible or not has to be determined.

Q: Determine the mass, in grams, of 0.615 moles of Pb (1 mol of Pb has a mass of 207.2 g

A: Concept introduction: Number of mole of substance is equal to the ratio of mass to molar mass. To…

Q: 4. How many grams would 2.5 moles of magnesium (Mg) weigh? 5. How many grams would 10.0 moles of…

A: 4) Given : Moles of Mg = 2.5 mol Since atomic mass of Mg = 24.3 g/mol Hence mass of Mg = moles X…

Q: How many ATOMS of sulfur are present in 2.10 moles of sulfur tetrafluoride ?

A:

Q: What is the empirical formula of a molecule containing four sulfur atoms and four fluorine atoms?

A: Note: Since you have posted multiple independent questions in the same request, we will solve the…

Q: Briefly explain how the atomic mass of an element is related to its molar mass.

A: How the atomic mass of an element is related to its molar mass ?

Q: How many atoms are present in a Mg sample with a mass of 10.6 grams?

A: Given, mass of Mg sample = 10.6 g Number of atoms present in 10.6 g of Mg sample = ? Note: molar…

Q: How many grams of lithium will combine with 21.3 g of sulfur to form the compound Li2S?

A: Given, mass of S = 21.3 g  Mass of Li2S = ?

Q: How many moles are in 130 gram of N?

A: Given :-  Mass of N = 130 g  Atomic weight of N = 14.01 g.mol-1  To calculate :-  Number of moles of…

Q: How many atoms of carbon are th

A:

Q: How many atoms of K are present in 195.49 grams of K?

A: relation  s/w  moles of particles & molar massn = mM  ∴ m = given massM = molar massn = molesn =…

Q: how many flouine atoms are in1.000 mol of SF4 (molar mass=108.06 g/mol)?

A: The number of atoms in one mol substance is known as Avogadro's number and that is equal to 6.02 ×…

Q: 2. How many MOLES of chlorine are present in 7.54×1022 molecules of sulfur dichloride? moles of…

A: It is given that 7.54×1022 molecules of SCl2 are present and the moles of chlorine contained need to…

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.