Final answer:
To find the number of moles in 1kg of NaCl, convert the mass to grams and divide by the molar mass of NaCl, which is 58.44 g/mol, resulting in 17.11 moles of NaCl.
Step-by-step explanation:
To determine the number of moles in 1kg of NaCl, we first need to know the molar mass of NaCl which is approximately 58.44 g/mol. Once we have that information, we can convert the mass of NaCl from kilograms to grams, as the molar mass is given in grams per mole.
Here are the steps:
- The mass of NaCl in grams is 1 kg * 1000 g/kg = 1000 g.
- Using the molar mass of NaCl (58.44 g/mol), we can convert the mass of NaCl to moles: 1000 g / 58.44 g/mol ≈ 17.11 moles of NaCl. Therefore, there are approximately 17.11 moles in 1 kg of NaCl.
It is important to remember that NaCl dissociates into Na+ and Cl- ions in solution. If we consider its dissociation, 1 mole of NaCl will result in 2 moles of ions (1 mol Na+ and 1 mol Cl-). Therefore, 1 kg of NaCl will result in approximately 34.22 moles of ions in the solution, assuming complete dissociation.