How many moles of Kr are contained in 398mg of Kr?

Q: How many moles of Fe are in 11.8 g of Fe?

A: Given mass of iron = 11.8 g

Q: How many moles of KBr are in 64.9 grams of KBr?

A:

Q: Calculate the number of moles of chlorine present in 100 g of chlorine gas.

A: We have to predict the moles of chlorine gas.

Q: Determine the molar mass of N2 in kilograms per mole (kg/mol). Do not include the unit of measure in…

A: Molar mass is the summation of atomic mass of all elements which are present in the molecule.  1Kg…

Q: How many molecules are in 40g of helium?

A: The given weight of He is 40 g.   The formula to calculate the number of moles is,

Q: How many molecules are present in 0.65 mol of carbon dioxide?

A:

Q: how many grams are in 0.456 mole P

A: P is a symbol of phosphorus element.

Q: How many grams of magnesium chloride are present in 0.7151 moles of sample?

A: Given Moles of magnesium chloride = 0.7151 mol

Q: How many grams of oxygen (O2) are in 20 moles of oxygen (O2) gas?

A: Mass of 1 mole of a substance is called the molar mass.

Q: How many grams are contained in a 0.183 mol sample of ammonium phosphate?

A:

Q: How many moles of BaCl2 are present in 26.17g of BaCl2

A:

Q: How many grams of NaCl are in 35.6 moles of NaCl?

A: Given : moles of NaCl = 35.6 mol

Q: How many hydrogen atoms are contained in 6.73 moles of hydrogen molecules?

A: The given moles of hydrogen molecules is 6.73 moles. According to Avogadro's law , 1 mole of every…

Q: How many moles of LiN3 are present in 7.56 grams of LiN3

A:

Q: How many moles are in 22 grams of argon

A:

Q: How many moles of KBr are in 67.2 grams of KBr?

A: Mole = Given mass ÷ Molar mass  Given mass of KBr = 67.2 grams  Molar mass of KBr = 119.002 g/mol

Q: How many molecules of H2O are contained in 360 g of H2O? How many atoms of H?

A:

Q: how many grams of sulfur are in 25g of methionine?

A: Given  Mass of methionine  = 25 gram  Mass of sulfur = ?

Q: How many moles of oxygen are in a 92.4-gram sample of HNO;?

A: The molar mass of HNO3 is 63.01 gm In 1 mole of HNO3 ,we have 3 moles of Oxygen present.

Q: How many moles are present in 20.4 g of sodium nitrate?

A: * Moles of compund = Mass of compund/ molar mass of compound By using this we can calculate the…

Q: How many moles of water are in 432g of water?

A: Given: 432 g of water. Molar mass of water= 18 g/mol We have to calculate moles of water in 432 g of…

Q: How many moles are in 855 grams of oxygen

A: Use the following formula: Moles =Weight of the substanceMolecular weight of the substance Weight of…

Q: How many grams of S are in 775g of SO2?

A: The mass of SO2 is = 775 g The mass of S in this amount of SO2 is =?

Q: How many moles would contain 12.0 g of P?

A: Introduction: As per the International system of units (SI), the moles is the unit of measurement…

Q: How many chlorine molecules are contained in a 151.34 g sample of chlorine?

A: To know the number of molecules, first we have to know the number of moles. Moles = Given mass /…

Q: How many moles of iron are contained in 1.75 kg of iron?

A: Given :- mass of Fe = 1.75 kg  To calculate :- number of moles of Fe

Q: How many moles are in 4.5 moles of CCl4

A: Number of moles of CCl4 = 4.5 mole

Q: How many moles are present in 19.4 g of N2 and 19.4 g of F2?

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

Q: How many moles of Neon gas are there

A: Ideal Gas Law :-  PV = nRT  P is the pressure of gas  V is the volume occupied by gas n is the…

Q: How many moles of oxygen atoms are present in a sample that contains 3.24 moles of NO2?

A: 1 mol of NO2 contains 2 moles of Oxygen atoms.  Given moles of NO2 = 3.24

Q: How many grams are in 0.00156 molecules of water?

A:

Q: moles

A:

Q: Ratio of moles of oxygen to moles of magnesium

A: After heating Mg we get it's oxide . So extra O atoms comes by which it's mass increases.

Q: How many moles is 2000.0g of carbon monoxide?

A: No. of mole is the ratio of the given mass of the element per molecular mass of that element.It is…

Q: How many moles of argon are in 34.9 g of argon? mol

A:

Q: How many moles of CH4 are contained in 96.0 grams of CH4?

A:

Q: How many moles are in 46.0g of CaO?

A: mole = mass / molar mass

Q: How many grams of Al2O3 are in 10 moles of Al2O3?

A: Given values, Moles of Al2O3 = 10 And we know that molar mass of Al2O3 = 101.96 g/mol

Q: How many grams of Na are present in a 15 g sample of NaCl?

A: The number of moles for a given chemical species can be defined as the ratio of mass to the molar…

Q: How many moles of RbF are in 67.5 grams of RbF?

A: Number of moles = Mass/Molar mass

Q: How many grams of W are in 0.367 mol W?

A: Given :- number of moles of W = 0.367 mol  To calculate :- mass of W in grams

Q: How many moles of carbon are in a 0.58g of diamond?

A: Given: Mass of diamond = 0.58 g As, diamond is entirely made up of carbon, therefore mass of carbon…

Q: How many grams of copper are in 2.00 moles?

A: As we know 1 mole of copper contains 63.54 gram. In this question given 2 moles of copper

Q: How many moles of hydrogen chloride are contained  in a 52,6 g sample of this gas?

A: The moleculer weight of HCl is 36.5 gm/mol That 36.5 gm HCl=1 mol

Q: How many molecules of water make up 5.7 moles?

A: A mole is the amount of a substance that contains 6.02*10^23 representative particle of that…

Q: what mass of ethanol and water would you need to make an 80.0g mixture containing equal number of…

A: Mass=No. of moles×molar mass⊙ molar mass of Ethanol CH3CH2OH=2×atomic⊙ mass of C+6×atomic mass of…

Q: how many moles of argon are in 3.995 grams of argon gas?

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: How many water molecules are in 23.7g of water?

A: Number of moles of a substance is equal to the mass of the substance divided by its molar mass.…

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.