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How many atoms in 26 gr of sodium chloride?
We just use stoichiometry. The molecular formula for sodium chloride is NaCl. First we must find the molar mass of NaCl, using the molar masses of each element in the compound. So, 23 g/mol of Na + 36 g/mol of Cl = 58 g/mol of NaCl. Next, we take the amount of grams you have (26 grams) and divide it by the molar mass of NaCl to find the number of moles in your sample. 26 g NaCl / 58 g/mol of NaCl = .45 mol NaCl. Finally, we convert that to the number of NaCl molecules in a mole by multiplying .45 moles by 6.02x1023. This equals 2.7x1023 molecules. Because, technically, NaCl is made up of 2 atoms per molecule, you can multiply that by 2, giving 5.7x1023 atoms.
How many mole of atoms are contained in 25.0 g naoh?
The formula mass of sodium hydroxide, NaOH is 23.0+16.0+1.0=40.0 Amount of NaOH in 25.0g sample = 0.625mol
How calculate atoms muber by unit cell?
You need to know the space group. Each space group specifies how many "objects" it contains. Multiply that by the number of atoms per molecule/formula unit and you're done.
How do you determine the number of atoms in each unit cell?
Count the number of atoms that are all the way inside the cell. Each of these counts as 1. Count the number of atoms that are on a face, but not a corner or edge of the cell. Each of these count as 1/2. Count the number of atoms that are on an edge, but not a corner of the cell. Each of these count as 1/4. Count the number of atoms that are on a corner of the cell. Each of these count as 1/8. The final formula is: inside + 1/2 face + 1/4 edge +1/8 corner = total atoms per cell.
How much chlorine is in NaCl?
One atom of chlorine per molecule of NaCl.
How many hydrogen atoms in water?
2 hydrogen atoms per molecule of water.
How many moles per mL of the solute are contained in the 0.20 M NaCl?
0.0002 mol NaCl/mLmolarity = (moles solute)/(L of solution)0.20 M NaCl = 0.20 mol NaCl/L1 L = 1000 mL0.20 mole NaCl/1000 mL = 0.00020 mol NaCl/mL (rounded to two significant figures)
How many cell membranes per cell?
Only one
How many in each cell?
Just one per cell.
How many atoms per molecule in silicon tetrachloride?
5: One silicon and four chlorine atoms.
How many atoms per element in sulican dioxide?
The chemical formula of Silicon dioxide is SiO2. Two oxygen atoms are bond to a silicon atom. This compound has 3 atoms per molecule.
How many atoms are in two oxygen molecules?
4 atoms in total. Oxygen is a diatomic molecule, so there is 2 atoms per molecule.
