(1.204 x … 1g of Na 3. 1g Cl2 . Each sodium sulfate molecule has 7 atoms. 0.6315 * 6.022 * 10^23 molecules ~ 3.803 * 10^23 molecules. Number of atoms = Number of atoms = Number of atoms = Number of atoms = (c) 1g of Li. 0 2 3 × 1 0 2 3. In 197g of gold number of atoms = 6.022 × 10 23 atoms In 1g of gold number of atoms = 6. The number of moles is the ratio of mass to molar mass. Use this page to learn how to convert between grams NaCl and mole. 1. 1g of Au 2. In this example, multiply the grams of Na by the conversion factor 1 mol Na/ 22.98 g Na, with 22.98g being the molar mass of one mole of Na, which then allows cancelation of grams, leaving moles of Na. Therefore, the total number of ions in 2 moles of sodium chloride is 2.408 x 10 24 ions. Number of molecule of O 3 = 6 1 × N A 1 molecule of ozone contains 3 O atoms. The molar mass of the elements is given in grams per mole. Note: 2 moles of sodium chloride contains 1.204 x 10 24 Na + ions & 1.204 x 10 24 Cl – ions. To convert to moles, you divided the number of grams by the molar mass. 7 * 3.803 * 10^23 ~ 2.662 * 10^24 atoms. In this case the Molar mass of Na is 23 g/m. Number of atoms = Number of atoms = Number of atoms = Number of atoms = (b) 1g of Na. 9.33*10^23 atoms of Na To find the amount of atoms (or molecules) of any element, we multiply the number of mols of element with Avogadro's Number, 6.022*10^23 1.55mol Na (6.022*10^23)/(1mol) = 9.33*10^23 atoms of Na Expert Answer: 1. This is a dimensional analysis question. *2 moles of sodium chloride contains 1.204 x 10 24 Cl – ions. 022 × 10 23 23 = 2. Sodium sulfate has a molecular weight of 142.04 g/mol. 1 grams NaCl is equal to 0.017110756386119 mole. Note that rounding errors may occur, so always check the results. Which of the following has largest number of atoms? This compound is also known as Sodium Chloride. 022 × 10 23 197 = 3. 40.1 / 40.1 = 1 mol Ca. When you look at a period table, the mass that’s given for each element is the mass of one mole of that element. There are 6.02x10^23 atoms in each mole, therefore use X moles x 6.02x10^23/ 1 mole. So the number of atoms will be roughly . The SI base unit for amount of substance is the mole. Number of moles of ozone = 4 6 8 = 6 1 The number of molecules is the product of the number of moles and the Avogadro's number N A which is 6. Grams cancel out, You are left with a number in moles. Type in your own numbers in the form to convert the units! 05 × 10 21 a t o m s 2) 1g of Na Atomic mass of Na = 23 g/mol In 23g of Na number of atoms = 6.022 × 10 23 atoms In 1g of Na number of atoms = 6. 5.87 / 58.69 = Now, you have the number of atoms, so just divide by Avagadro's number (6.022 x 10^23) Accordingly, the following formula can be used to find the number of atoms: Number of atoms = (a) 1g of Au. For converting grams to moles use: mass (g) x 1 mole/ molar mass (g). According to that, in 23 grams of sodium, there are 6.02x10^23 atoms of Na. Asked by Prachi Panwar | 23rd May, 2013, 07:36: PM. 1g of Li 4. 89.7 g is 89.7 / 142.04 ~ 0.6315 mol or . 61 × 10 22 a t o m s 3) 1g of Li Atomic mass of Li = 7 g/mol