A sample of carbon (C) contains 4.74× 1021 C atoms. How many moles of carbon are present in the sample?

Q: Sorbose, C6H12O6, is used in making vitamin C. A sorbose sample contains 36.0 g of carbon atoms.…

A: Mass of carbon =36 g  Moles of carbon in sorbose=36 g ×1 mol12.01 g=2.9975 mol Moles of H atom can…

Q: How many atoms are present in 1.5 moles of nickel?

A:

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: How many atoms are in 1 mole of calcium atoms? 6.02 x 10-23 6.02 x 1023 6.02 1

A: One mole of any substance contains 6.022×1023 particles in it.

Q: A brass alloy contains 78.9% copper, Cu, by mass with the remainder of the alloy being zinc, Zn.…

A: We have to predict the moles of Zn and atoms of Zn.

Q: The mass of a silver (Ag) coin is 15 g. If the coin is 50% Ag by mass, then how many Ag atoms are…

A: The given mass of the silver coin = 15 g Percentage composition by mass of silver (Ag) = 50% So,…

Q: How many atoms of carbon are combined with 7.70 moles of hydrogen atoms in a sample of the compound…

A: C2H6 From this Molecule we get that ; 1 mol C2H6 contain ; 2 mol Carbon and 6 mol Hydrogen    We can…

Q: How many moles of gold are present in a sample containing 7.50 x 1024 atoms of gold?

A: Given- Number of atoms of gold = 7.50 ×1024 atom

Q: Which of the following has more atoms: 3.55 g ef lithium atoms or 19.1 g of nickel atoms?

A: Mass of lithium = 3.58 g Mass of nickel = 19.1 g

Q: What is the mass of the compound C8H18 (Mm = 114.26 g.mol-1) that contains 7.20x1022 hydrogen atoms?

A: Given :- molar mass of C8H18 = 114.26 g.mol-1  Number of H atoms = 7.20 × 1022 atoms   To calculate…

Q: What is the mass of 4.06 moles of sodium atoms?

A:

Q: The mass of 5.20 moles of glucose, C6H12O6 is

A:

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

A: Given, Diamond is one form of an elemental carbon and an engagementring contains a diamond weighing…

Q: A sample of ammonia Nh3 contains 1.2 X 1023 hydrogen atoms. How many NH3 molecules are in the…

A: Ammonia (NH3) is a molecule that exists as a gas at Standard temperature (298 K). It contains atoms…

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

A: The mass of 1.0 g is equal to 1000 mg. The mass of diamond in g is calculated as shown below.

Q: 8,47x102 calculate the mass ; ingram of 8,47x1022 atoms of coppER

A:

Q: Find the total number of atoms in a sample of cocaine hydrochloride, C17 H22 CINO4, of mass 24.0 mg…

A:

Q: What is the mass of a mole of electrons if one electronhas a mass of 9.11 × 1 0 -28 g?

A: Because, 1 mole=6.022×1023 molecules/particles Therefore, 1 mole of electron=6.022×1023 electrons

Q: A sample of hydrogen has a mass of 40.2 grams.  How many H atoms are there in the sample?   How…

A: Given that,mass of hydrogen = 40.2 gMolar mass of hydrogen = 2.016g/molmoles of hydrogen = mass of…

Q: If 2.06 mL of seawater contains about 6.91×10-14 moles of gold, how many atoms of gold are in that…

A:

Q: 2. How many moles of Pb is 9.3 x 1015 atoms of Pb?

A: Number of atom of pb = 9.3×10^15 atoms

Q: . How many ATOMS of carbon are present in 9.01 grams of carbon tetrachloride ?

A: Number of moles = mass/molar mass  Molar mass of CCl4 = 153.82 g/mol  1 mol = 6.022 × 1023…

Q: A sample of propane, C3H8, contains 13.8 molesmoles of carbon atoms. How many total moles of atoms…

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: 4. Complete the following table Mass Moles Particles 3.65 moles Mg 29.54 g Cr 3.54 x 1025 atoms P…

A: Mass = Molar mass * Moles The no of particles in 1 mole = 6.023*1023

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: 1. How many moles of Pb is 9.34 x 1015 atoms of Pb?

A:

Q: If a sample of ethanol has a mass of 1.34 x 104 mg, d) How many C atoms are in the sample? e) How…

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

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: 20)A 10 g sample of which substance contains the greatest number of hydrogen Atoms? 

A: [A.] 10 g of PH3  Molar mass of PH3 = 33.997 g/mol  Number of moles of PH3 = 10 g / 33.997 g/mol  =…

Q: In 6.9 g of aluminum, there are ______ x 1023 aluminum atoms present

A: Molecular mass of atom contains 6.023 × 10^23 atoms. Molar mass of aluminium is 26.981 g/mol

Q: how many atoms of carbon are in a 12.5 mg sample of C^3H^8?

A: Given, Mass of C3H8 = 12.5 mg = 0.0125 g Formula used,  moles=given massMolar mass 1 mol = 6.023 x…

Q: Calculate the number of atoms in a 6.75×10^3 g sample of sulfur.

A: Calculate the number of moles of Sulfur

Q: 23 atoms of magnesium? 1. How many moles of magnesium is 5.61 x 10

A: moles of any species is defined as when given mass of species divided by its molar mass

Q: A sample of ammonia(NH3 17.03 g/mol) has a mass of 56.6 g. How many molecules are in this sample (1…

A: mol designates 6.022 * 10 raise to power 23 molecules.

Q: Calculate the number of atoms of copper in 2.65 g of copper.

A: The number of atoms of copper in 2.65 g of copper needs to be determined. Required information:…

Q: Calculate the mass of tetraborane (B,H10) that contains a billion (1.00 × 10´) hydrogen atoms.

A: Given : number of hydrogen atoms = 1.00 X 109  Since 1 molecule of B4H10 has 4 B atoms and 10 H…

Q: If a sample of N2O4 contains 19 g of nitrogen (N), how many moles of N2O4 are in that sample?

A: Since in 1 mole of N2O4 we will have 2 moles of N Hence moles of N2O4 = moles of N / 2  Since moles…

Q: How many H atoms are there in 1.0 moles of H

A: Given :- number of moles of H = 1.0 moles  To calculate :- number of H atoms

Q: What amount of CuSO4•5H,O, in moles, does this mass represent? mass = 1.787 g %3D X mol resubmit…

A: Given : Mass of CuSO4.5H2O = 1.787 g And molar mass of CuSO4.5H2O = 249.69 g/mol.

Q: A sample of C3H8 has 8.00×10^24 H atoms. How many carbon atoms does the sample contain?  What is…

A: Given :- number of H atoms = 8.00 × 1024 atoms  To be calculated :-  No. of C atoms in sample…

Q: The mass in grams of iodine in a sample of BaI 2 that contains 15.7 grams of barium is

A: The moles of Barium ion is calculated as follows,

Q: How many moles would 1.00 x 1023 molecules of methane ( CH4 ) represent? How many Sulfur atoms would…

A: According to avogadro's rule number of molecule present in 1 mole of substance is 6.022×1023, and…

Q: Consider a 3.55 g sample of C4H10. How many atoms of C would be in this sample?

A: Molar mass of C4H10  = 58 g/ mol Fraction of  C = 48/58 = 0.8276

Q: A sample of C3H8 has 6.32×1024 H atoms. How many carbon atoms does the sample contain? What is the…

A: In a molecule of C3H8, the mole ratio of carbon to hydrogen is 3:8. No of moles of a substance can…

Q: How many moles of boron, B,B, are in 1.69×1024 B1.69×1024 B atoms?

A: Consider the given information is as follows; Number of boron (B) atoms = 1.69×1024           Moles…

Q: How many lithium atoms are present in 49.17 moles of lithium?

A: 1 mole contains 6.022 ×1023 atoms

Q: Suppose you have a sample of sodium weighing 14.10g. How many atoms of sodium are present in this…

A: approach to solve this type of question is - first convert the given amount into the mole. we know…

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.