Calculate the number of moles of helium that contains 2.79×1021 atoms.

Q: An average sample of coal contains 3.0% sulfur by mass. Calculate the moles of sulfur present in…

A: Given : Mass of coal = 2.4 X 103 Kg  And mass % of sulfur = 3.0 % Since 1 Kg = 1000 g Hence mass of…

Q: Determine the number of moles in 1.83 x 1023 formula units of BaCl2.

A:

Q: Calculate how many grams of chlorine gas are in 8.031 x 1023 atoms of chlorine gas.

A: Given: Atoms of chlorine gas is 8.031×1023 Mass of one mole of chlorine gas is 70.9 g

Q: Calculate the number of moles of He atoms present in 5.55 g of He.

A: Given that, mass of He= 5.55 g molar mass of He= 4 g mol-1 then,

Q: How many moles are in 4.8 x10 24 molecules of Na „0?

A: Answer :-  Number of moles of Na2O = 8

Q: What is the empirical formula of C4H10N2

A: Given Molecular Formula  : C4H10N2

Q: Determine the number of atoms of O 10.0 of CO2.

A: Since each molecule of CO2 has 1 atom of C and 2 atoms of O  Hence each molecule has total number of…

Q: How many moles of Phosphorus are present in 114.95 g of Phosphorus?

A: Given, mass of Phosphorus = 114.95 g Molar mass of P = 30.97 g/mol

Q: Determine the number of atoms of O in 10.0g ofCO2.

A:

Q: Calculate the number of moles of hydrogen peroxide molecules, H2O2, present in a sample containing…

A:

Q: How many moles of carbon tetrabromide are present in 4.07 x 1022 molecules of this compound?

A:

Q: How many moles are in 4.8 x 1025 molecules of water?

A:

Q: Calculate the number of moles of NO2 in 1.18 g of NO2.

A: The moles of a substance in a given mass of compound is determined as, The molar mass of NO2 is…

Q: 1. 84 g of CsH&O6 contains 6.02 x 1023 molecules.

A: Molar mass of C5H8O6 = 5×12 + 8×1+ 6 × 16 = 164 g 1 mol of any substance contains= 6.022×1023…

Q: Calculate the mass of tetraborane that contains a billion (1.0x10^9) boron atoms.

A: Given :- number of boron atoms = 1.0 × 109 atoms  To be calculated :- mass of tetraborane (in grams)

Q: Calculate the number of moles equivalent to 5.4 x 10 atoms of helium.

A: According to Avogadro law  1 mole = 6.022* 1023 atoms

Q: Calculate the number of nitrogen atoms in a 150.0 g sample of dinitrogen tetroxide

A:

Q: Write the empirical formula corresponding to Al₂Br₆

A: The empirical formula of a chemical compound is the simplest positive integer ratio of atoms present…

Q: Number of atoms of Carbon in 10 moles of CAH10 are:

A: Given : moles = 10 mol

Q: How many moles of atoms are in 6.00 g of 13C?

A: moles is related to the mass in grams and molar mass of the substance by the formula,moles = mass…

Q: Calculate the number of moles in 9.364 x 1018 atoms of Ca

A:

Q: Using the average atomic mass, calculate the mass in grams of each of the following samples.…

A: Given information,     4.50 x 103 mol of germanium, Ge

Q: 8. Calculate the number of moles in a sample containing 1.85 x 1034 molecules of water.

A: Given that: Molecule of water = 1.85 × 1034 molecules Number of moles = ?

Q: The total number of oxygen atoms in the expression 3 Ca3 (PO4)2 is

A: We, have 3Ca3(PO4) 2  , We have to count total number of O atom in expression.

Q: How many moles of atoms are in 5.00 g of ¹3C?

A: Mole can be define as the ratio of weight of substance taken divided by molecular weight of that…

Q: How do you calculate the number of N atoms in 25.0 g of C7H5N3O6?

A: Given, Mass of TNT = 25g

Q: How many moles are, in 7.99 x 10 I2 molecules .

A:

Q: what is the percentage composition of oxygen of potassium sulfate,K2S04?

A: Since, Molar mass of K2SO4= 174.259 g mol-1 Molar mass of O = 16 g mol-1 %O = ?

Q: Calculate the number of moles in 3.34x10 34 molecules of Cu (OH)2

A: Mole is used to determine the amount of substance. One mole of a substance contains 6.022×1023…

Q: how many moles are in 8.5 x 1023 molecules of CO

A: 6.022 ×1023molecules are present in one mole of carbon monoxide. 8.5 ×1023 molecules are present in…

Q: Determine the quantity of moles of hydrogen in 3.06 x 10-3g of glycine , C2HSNO.?

A: Please find your solution below : Mole is a measure of amount of any substance.  It is defined as…

Q: How many moles are in 3.56 x 10 ^25 molecules of carbon dioxide, CO2

A: Given: Molecules present are 3.56 × 1025

Q: Determine the number of moles in 234 g of F,

A: Given  Mass of F2                 = 234 gram  Number of Moles   = ? Molar mass of F     = 19 gm/mole…

Q: Calculate the number of moles in 10.0 grams of BaF 2

A:

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: What is the empirical formula for C6H2O6

A: Empirical Formula = C3H1O3

Q: 1. Calculate the number of moles of chlorine in 2.34 x 1019 molecules of chlorine.

A: The question is based on mole concept. we have to calculate number of moles in given molecules of…

Q: calculate the mass in grams of 1.9x1023    atoms of lead

A: Given : Number of lead atoms = 1.9 X 1023 atoms

Q: What is the total mass of oxygen contained in 5.2 g of benzoic acid (C6H5COOH)?

A: This is mole concept reactions

Q: determine the quantity of moles in 4.21 x 1023 molecules of CaCl2

A: The number of moles of a substance is determined as the mass of a substance upon its molar mass. The…

Q: Calculate the number of moles in 6.60x1015 atoms of 14c.

A: A mole is defined as 6.02 × 1023 of some chemical unit, be it atoms, molecules, ions, or others. For…

Q: What is the number of moles for 2.44 x 1022 NaCl formula units?

A:

Q: Calculate how many grams of chlorine gas are in 7.496 x 1023 atoms of chlorine gas.

A:

Q: Calculate the mass (in g) of each sample. 5.94x1020 SO3 molecules

A: Given: 5.94*1020 SO3 molecules

Q: Determine the quantity of moles in 1.20 x 1024 molecules of H₂O

A: Conversion of molecules to the number of moles ?

Q: Calculate the number of H atoms in 0.350 mol of C6H12O6

A: 1 mole = 6.023*1023 number of atoms /molecules

Q: Calculate the number of molecules present in a 1.32 g sample of Calcium Hydroxide.

A: For Calcium Hydroxide :  Given mass = 1.32 g Molar mass = 74.093 g mol-1

Q: Determine the number of moles in 4.21 x 10^23 molecules of CaCl2

A: One mole of any species contains avagadro number of atoms, molecules, ions etc.

Q: What is the mass of 1.36 x 1022 molecules of HCI? O 36.5 g 1610 g

A:

Q: How many moles are in 9.3 x 1024 molecules of carbon dioxide?

A: 1 mol contains 6.022 × 1023 molecules

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.