1.How many grams are in one mole silicon?
2. how many moles are in 128 grams of oxygen gas (O2)?
3.How many molecules are in 2 moles of AIO?
4.How many moles are in 18.06 x 10 to the 23 power?
5. how many moles are in 100 grams of CH4?
1. See the atomic mass for Si from the periodic table.
2. mols = grams/molar mass
3. There are 6.02E23 molecules in a mol.
4. 1 mol is 6.02E23 so 18.06E23 must be ? mols.
5. mols = grams/molar mass. Why would you write this? You should catch on that this is the same problem as 2. Once you know how to do that you should be able to convert grams of anything to mols.
1. To determine the number of grams in one mole of silicon, we need to refer to its molar mass. The molar mass of silicon is approximately 28.09 grams per mole.
2. To find the number of moles in 128 grams of oxygen gas (O2), we need to divide the given mass by the molar mass of oxygen. The molar mass of oxygen is approximately 32 grams per mole since oxygen gas (O2) consists of two oxygen atoms. Therefore, dividing 128 grams by 32 grams per mole gives us 4 moles of oxygen gas.
3. The number of molecules in a given number of moles can be calculated using Avogadro's number, which is approximately 6.022 x 10^23 molecules per mole. For example, if we have 2 moles of AIO (assuming you meant Al2O3), we can multiply 2 moles by Avogadro's number to obtain the number of molecules. So, 2 moles multiplied by 6.022 x 10^23 molecules per mole equals approximately 1.2044 x 10^24 molecules of Al2O3.
4. It seems like you are given a quantity of 18.06 x 10^23, but it doesn't specify whether it is in grams or another unit. To convert this quantity to moles, we need to divide it by Avogadro's number (6.022 x 10^23 molecules per mole). If it is already in grams, you can divide it by the molar mass to get moles. Please provide more information to give you a more accurate answer.
5. To determine the number of moles in 100 grams of CH4 (methane), we need to divide the given mass by the molar mass of CH4. The molar mass of methane is approximately 16 grams per mole since it consists of one carbon atom and four hydrogen atoms. Therefore, dividing 100 grams by 16 grams per mole gives us 6.25 moles of methane.