Question
How many grams of solute are dissolved in 125.0 mL of 5.00 M NaCl (MM=58.45) ? 625 g NaCl 0.04 mol NaCl 0.625 g NaCl 36.5 g NaCl
Answer
4
(269 Votes)
Daphne
Master · Tutor for 5 years
Answer
D
Explanation
## Step 1:The concentration of the solution is given as 5.00 M (molar), which means there are 5.00 moles of NaCl dissolved in 1 liter (1000 mL) of solution.## Step 2:To find the amount of solute in 125.0 mL, we can set up a proportion: ###
Solving for
, we get
moles of NaCl.## Step 3:The molar mass of NaCl is given as 58.45 g/mole. Therefore, the mass of the solute in 125.0 mL is: ###
However, the closest option to our calculation is 36.5 g NaCl, which is option D.