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.
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.
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.
To find the mass in grams of 4.5 x 10²² molecules of barium nitrate, Ba(NO₂)₂, first determine the molar mass of Ba(NO₂)₂. The molar mass is approximately 199.34 g/mol. Next, convert the number of molecules to moles using Avogadro's number (6.022 x 10²³ molecules/mol): [ \text{moles} = \frac{4.5 \times 10^{22}}{6.022 \times 10^{23}} \approx 0.0747 \text{ moles}. ] Finally, multiply the number of moles by the molar mass to find the mass: [ \text{mass} = 0.0747 \text{ moles} \times 199.34 \text{ g/mol} \approx 14.89 \text{ grams}. ]
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.)
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).
2.01x10^22 atoms x 1 mole/6.02x10^23 atoms = 0.0334 moles
The answer is 0,465 moles.
Quite a few! 392 grams phosphorous (1 mole P/30.97 grams) = 12.7 moles phosphorous ===================
There are 4.54 x 10^24 atoms in 7.52 moles of Phosphorus because 1 mole of Phosphorus contains 6.022 x 10^23 atoms. Multiplying this by the number of moles gives the total number of atoms in 7.52 moles.
There are (6.023 \times 10^{23}) atoms in 1 mole of any substance (Avogadro's number). Therefore, there are (1.004 \times 6.023 \times 10^{23} \approx 6.05 \times 10^{23}) atoms in 1.004 moles of bismuth.
There are (~6.022 \times 10^{23}) atoms in one mole of sulfur. Therefore, in 3 moles of sulfur there are (~3 \times 6.022 \times 10^{23} \approx 1.807 \times 10^{24}) atoms of sulfur.
1,638 moles contain 9,864266723766.10e23 atoms.
1.51 X 1015 atoms (1 mole/6.022 X 1023) = 2.51 X 10 -9 moles ===============
The gram molecular mass of P2O5 is 141.94, and each molecule contains 7 atoms, as shown by adding the subscripts in the formula. 0.400 grams constitutes 0.400/141.94 or about 2.812 X 10-3 mole, and the number of atoms is therefore the product of this number of moles, 7, and Avogadro's Number, or about 1.19 X 1022 atoms, to the justified number of significant digits.
20 moles
This is equivalent to 1,4 moles.
There are twice as many oxygen atoms as carbon atoms in carbon dioxide, so 100.0 moles of carbon dioxide would contain 200.0 moles of oxygen atoms.