answersLogoWhite
notificationBell
Chemistry
Atoms and Atomic Structure
Molecular Mass

What is the mass of 5 moles of helium He atoms?


Top Answer
User Avatar
Wiki User
Answered 2016-07-08 16:11:04

5 moles of helium He atoms is equivalent to 20,013 g.

001
๐Ÿ™
0
๐Ÿคจ
1
๐Ÿ˜ฎ
1
๐Ÿ˜‚
0
User Avatar

Your Answer

Related Questions



The mass of 5 moles Fe2O3 is 798,45 g.


how many atoms are in 5.00 moles of water


There are 60 moles of carbon atoms in 5 moles of sucrose.


Diphosphorus pentoxide has 5 oxygen atoms per molecule according to the given prefix. So, 5 moles of it will be 5 x 5 x (6.022x10^23) = 1.51x10^25 oxygen atoms.


1 mole = 6.023 x 1023 atoms So 5 moles = 3.012 x 1024 atoms


1 mole He = 4 g He 5 moles of He = 20 g of He


2,85x1018 atoms of iron are equivalent to 0,73.10-5 moles.


1 mole of lithium has 6.023 x 1023 atoms. So 5 moles will have 30.115 x 1023 atoms


i do know how many atom are in 5 moles of gold


.385 moles of atoms are in 5.00 of 13c. 5/13 = 0.385 mol


Using the formula number of moles = mass divided by molar massso mass = number of moles X molar massFind molar mass by adding up the masses of all the atoms in your substance.A good way to remember this is as the formula g/mw = moles, and the mnemonic for this is"Mine workers (mw= molecular weight) under ground (grams of compound you are dealingwith = Moles!


one mole of oxygen = 16grams and is 6.02x10^23 atoms one milligram of oxygen is 0.001 grams. number of moles = mass used/ RMM of compound therefore number of moles = 0.001/16 =6.25x10^-5 moles used. to convert to number of atoms multiply by avagadros number. 6.25x10^-5 * 6.02x10^23 3.763x10^19 atoms


Aluminium Oxide(Al2O3) has 2 moles of aluminum and 3 moles of oxygen. The total is 5 moles. One mole is 6.022 x 1023 atoms. Therefore, 5 moles = 30.110 x 1023 atoms


The answer is: Number of Avogadro x 5 = 30,11070645.1023 atoms.


1 mole of carbon is 12.0107 grams Multiply by 5 and you get 60.0535 grams


Atomic mass of Sulphur is 32 1 mole = Atomic mass of sulphur No. of moles = Given mass/ Atomic mass No.of moles= 5/32 0.15 moles


Since propane has the formula C3H8, each mole of propane will have 8 moles of hydrogen atoms, so 5 moles of propane will contain 5x8=40 moles of hydrogen.


4 Al + 3O2 ------> 2Al2O3 so 4 moles of Aluminium react with 6 moles of oxygen atoms or 3 moles of oxygen molecules. So 5 moles of Al reacts with 5/4 x 6 = 7.5 moles of oxygen atoms or 3.75 moles of oxygen molecules.


5. The number of molecules would be 3 x 1024


number of moles=mass/molar mass =5/(28+32) =0.83 mol


First you need to know the molecular mass of the compound. The molecular mass is the sum of the atomic masses of each atom in the molecule. This means that you need to count atoms of the same element each time they occur in the compound.Carbon = 12.0 × 5 atoms = 60.0 gramsHydrogen = 1.0 × 12 atoms = 12.0 grams________________________________________Pentane = 72.0 gramsNow we take the mass in grams and convert it to moles using the formula:# grams ÷ molecular mass = # moles220 g ÷ 72.0 g = 3.06 moles pentane


You have to use the equationnumber of moles = mass/Molar massn = 5/(39.1+32.1+64)n = 5/135.2number of moles = 0.04:)


10 moles of oxygen atoms or 5 moles of oxygen molecules.


The formula for methane shows that each molecule of it contains 5 atom: 1 carbon atom and 4 hydrogen atoms. The gram molecular mass of methane is 16.04. Therefore, 28 grams of methane contains 28/16.04 moles of methane and 5 times this number, or 8.7, "moles of atoms", to the justified number of significant digits.