To calculate the grams of solute, we can multiply the moles of NaCl by its molar mass. The molar mass of NaCl is approximately 58.44 g/mol.
Grams of solute = 0.254 mol NaCl * 58.44 g/mol ≈ 14.8 g
To calculate the mass percent (m/m), we divide the grams of solute by the total mass of the solution (solute + solvent) and multiply by 100.
Mass percent (m/m) = (14.8 g / (14.8 g + 250 g)) * 100 ≈ 5.59%
Therefore, the correct answer is 14.8 g, 5.59%.
A solution contains 0.254 moles of NaCI in 250. g of water. How many grams of solute are present and what is the mass percent (m/m)?
0.254 g, 0.102%
14.8 g, 0.0559%
O 14.8 g, 5.59%
• 0.00435 g, 0.00174%
1 answer