b. How many moles of hydrogen are in this sample?

Q: How many atoms in 17.8  mol CS2?

A: According to Avogadro's, the total no of molecules/atoms present in one mole of substance is equal…

Q: ow many moles of atoms are contained in 19.2 g of NaOH

A: Given that: Mass of sodium hydroxide = 19.2 g To find: Moles of sodium hydroxide =?

Q: How many molecules are in 20.8 moles of NO₂?

A:

Q: 1. How many moles of Ni are there in a sample that contains 16.5 grams of nickel? moles 2. How many…

A:

Q: How many molecules are contained in a 51g sample of water?

A: mass of sample of water (H2O) = 51 gNumber of water (H2O) molecules = ?Note:molar mass of water…

Q: 5. A sample of iron Fe weighing 14.2g contains how many moles of iron atoms? 00.254 moles O 0.0739…

A: The number of moles of any substance is the ratio of the given mass of that substance in grams to…

Q: How many atoms of carbon are present in 9.90 g of carbon tetrachloride?

A: The number of moles of CCl4 can be calculated using the following equation: Number of moles=given…

Q: How many bromine atoms are contained in 8.94 moles of bromine molecules?

A: Given :-  Number of moles of Br2 = 8.94 mol  To be calculated :-  Number of Br atoms

Q: a sample of hydrate sodium acetate is analyzed and determined to contain 4.27 g of water. how many…

A:

Q: How many moles of tin atoms are in a pure tin cup with a mass of 43.8 g ? v= ? mol

A: Mole concept:  According to Avogadro concept, the number of atoms in one mole of the substance is…

Q: What is the mass of 1.33 moles of NO?

A: Number of moles = Mass/ Molar Mass Molar mass of NO = 30g/mol Number of moles = 1.33

Q: . Determine the mass, in grams, of 0.390 moles of Pb (1 mol of Pb has a mass of 207.2 g).

A: Given, moles of Pb = 0.390 mol molar mass of Pb = 207.2 g/mol We know, mass = moles x molar mass The…

Q: Calculate the number of moles in each sample. 74.9 g H2CCl2   n(H2CCl2)=??

A: Given, 74.9 g of dichloromethane.

Q: Which statement best describes molar mass? a. the mass of 6.02 x 10²3 atoms, which is constant for…

A: The molar mass of a compound is described by the moles concept. According to this concept, one mole…

Q: How many grams of carbon are in 69.36 g of octane?

A: Molar mass of Octane(C8H18) is 114.23 g/mol One molecule of Octane contains 8 atoms of Carbon Molar…

Q: Is the subscript of an element the same as its number of moles? Does the subscript mean how much…

A:

Q: a. How many molecules of water are present in 3.86 moles of this compound? molecules 22 b. How many…

A: The relationship between number of molecules and moles is  Number of molecules of any compound =…

Q: 1. How many molecules of oxygen are in 50.0 g of oxygen?

A:

Q: a. How many molecules of carbon dioxide are present in 4.99 moles of this compound? molecules 22 b.…

A: 1 mol = 6.022 x 1023 moleculesThus,1 molecule =  mol

Q: Calculate the number of atoms of silver that are in 0.212 moles of silver. (Avogadro's number = 6.02…

A: Avogadro’s number, one mole of any substance (defined as its molecular weight in grams), is equal to…

Q: How many molecules are in 30.8 moles of NH₃?

A:

Q: How many moles of carbon atoms are in one mole of carbon dioxide?  how many moles of oxygen are in…

A: Moles can be calculated using the mole ratio.  For mole ratio we check the number of atoms in given…

Q: How do you convert the following number of atoms to moles and moles to atoms as needed to get a, b,…

A: we know  that  n=no of molecules or atoms/NA NA = 6.023 ×10 23

Q: Consider 1.00 g of Copper (Cu) metal. How many Cu moles are present in this sample? How many Cu…

A: Since moles of element = mass of element / Atomic mass of element  Atomic mass of Cu = 63.5 g/mol…

Q: How many molecules are in 13.4 grams of sulfur hexachloride?

A:

Q: What mass of HCl would be produced if you reacted 2 mol hydrogen gas with 2 mol chlorine gas?

A: The reactants given are, 1) Hydrogen gas i.e H2 (g)  2) Chlorine gas i.e Cl2 (g)  And the product…

Q: 0. How many grams of platinum contain the same number of atoms as 49.5g of mercury?

A: Applying mole concept and number of atoms.

Q: How many molecules are contained in a glass that holds 250 g of water? How many moles does that…

A: Number of moles is given by the ratio of mass of the substance to that of the molar mass of the…

Q: How many moles of O are present in 12 g of CO?

A: Given information is as follows:         The mass of CO given = 12 g The moles of O present in CO =…

Q: Convert between mass and moles of an element. What amount of oxygen, in moles, does 49.8 g 0…

A: Given that, mass of O=49.8 g  molar mass of O= 16 g mol-1 moles of O=?

Q: How many molecules are in 35.8 moles of CH,?

A: Mole concept: According to the mole concept, the number of molecules in the one mole of a substance…

Q: How many atoms are in 1.50 moles of Hg?

A: The objective of this question is to find out the number of atoms in a given amount of substance, in…

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: If a sample of barium hydroxide has a mass of 5.190 g, determine the number of moles of the compound…

A: Given,  Mass of Ba(OH)2 = 5.190 g a). Determine the number of moles of sample = ? b). Determine the…

Q: PCI3) has a mass of 50.5 g.

A: Molar mass of PCl3 = mass of P + 3( mass of Cl )  Molar Mass of PCl3 = 40gmol-1 + 3 • ( 35.45 gmol-1…

Q: How many molecules of water are present in 4.20 moles

A: Given :- number of moles of water = 4.20 mol  To calculate :- number of molecules of water

Q: The volume of a sample of copper is 7.14 mL.  The density of copper is 8.9 g/mL. How many moles of…

A: It is given that the volume of a sample of copper is 7.4 mL and the density of copper is 8.9 g/mL,

Q: How many moles of carbon is in 98.6g of carbon?

A:

Q: How many O atoms are in your 0.825 mol sample of calcium nitrate?

A: In this question, moles of the compound are given. From that, an individual element is taken and we…

Q: How many moles are in 130 grams of  N?  N= 14. 01       Molar Mass:     = ___________

A:

Q: How many moles of carbon are in a sample containing 5.32x10^20 atoms C?

A: Given,Number of carbon atoms = 5.32 × 1020

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.