a salt shaker filled with 17.0g sodium chloride contain how many moles?
To find the number of moles of sodium chloride in a salt shaker filled with 17.0g of sodium chloride, we need to use the formula:
Moles = Mass / Molar Mass
First, let's find the molar mass of sodium chloride (NaCl). Sodium (Na) has a molar mass of 22.99 g/mol, and chlorine (Cl) has a molar mass of 35.45 g/mol.
Molar Mass of NaCl = (Na molar mass) + (Cl molar mass)
Molar Mass of NaCl = 22.99 g/mol + 35.45 g/mol
Molar Mass of NaCl = 58.44 g/mol
Now that we have the molar mass of NaCl, we can use the formula to find the number of moles:
Moles = Mass / Molar Mass
Moles = 17.0g / 58.44 g/mol
Moles ≈ 0.2918 moles
Therefore, a salt shaker filled with 17.0g of sodium chloride contains approximately 0.2918 moles of sodium chloride.