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Oh honey, let me break it down for you. Avogadro's number tells us that 1 mole is equal to 6.022 x 10^23 atoms. So, to find out how many moles are in 1.25 x 10^25 atoms of phosphorus, you just need to divide the number of atoms by Avogadro's number. That gives you approximately 20.75 moles of phosphorus.
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How many B atoms are there in 2.47 moles of B?
The conversion factor between atoms and moles is Avogadro's number: 6.02 x 1023 "things" / moleTo convert moles to atoms:atoms B = 2.47 mol B6.02 x 1023 atoms B = 1.49E+24 atoms B1 mol BMultiply by atoms per mole. Moles cancel out.
How many copper atoms are in a pure copper statue with a mass of 129 kg?
The atomic weight of copper is 63.546 grams per mole. 129 kg is equal to 129000 grams. So there are 2030.03 moles of copper. There are 6.022 x 10^23 copper atoms in a mole. So there are 12.22 x 10^26 atoms.
If you have 2 moles of dollars how many dollars do you have?
About 1.2 times ten to the 24th power. This is so much more money than has ever existed that it's almost meaningless. (To give some perspective, there's about 1.2 times ten to the 12th dollars in circulation right now; if you piled all of it up, it would take a trillion such piles to make two moles of dollars.)
How many moles of water does 6.02 times ten to the twenty third power?
6.02 x 1023 is Avogadro's number, to 3 significant digits. A mole of anything is that number of particles (in the case of water, molecules).
What quantity serves as the conversion factor between the mass of a sample and how many moles the sample contains?
The quantity that serves as a conversion factor between mass and number of moles is the molecular mass.
