Question
Find the percent by mass in which 38.81 g of NaCl (58.45g/mol) is dissolved in 271.0 g of water.
Answers
Answered by
GPT 3.5
To find the percent by mass of NaCl in the solution, we need to divide the mass of NaCl by the total mass of the solution (NaCl + water) and multiply by 100.
The mass of NaCl is given as 38.81 g.
The molar mass of NaCl is 58.45 g/mol.
The total mass of the solution is the mass of NaCl + mass of water
mass of water = 271.0 g
Total mass = 38.81 g + 271.0 g = 309.81 g
Percent by mass = (mass of NaCl / total mass) x 100
Percent by mass = (38.81 g / 309.81 g) x 100
Calculating this:
Percent by mass = 0.1255 x 100
Percent by mass = 12.55%
Therefore, the percent by mass of NaCl in the solution is 12.55%.
The mass of NaCl is given as 38.81 g.
The molar mass of NaCl is 58.45 g/mol.
The total mass of the solution is the mass of NaCl + mass of water
mass of water = 271.0 g
Total mass = 38.81 g + 271.0 g = 309.81 g
Percent by mass = (mass of NaCl / total mass) x 100
Percent by mass = (38.81 g / 309.81 g) x 100
Calculating this:
Percent by mass = 0.1255 x 100
Percent by mass = 12.55%
Therefore, the percent by mass of NaCl in the solution is 12.55%.