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