calculate the mass, in grams, of NaCl present in each of the following solutions.
6.25 g of 11.5% NaCl solution
452 g of 12.3% NaCl solution
please show me how to do these. Thanks.
11.5% NaCl(w/w) means 11.5 g NaCl in 100 g soln.
11.5 g x 6.25g/100g = ??g in 6.25 g soln.
OR
(g solute/g soln)*100 = percent
(x g NaCl/6.25g soln)*100 = 11.5%
(x g NaCl/6.25 g soln) = 0.115
x g NaCl = 0.115 x 6.25 = ??
you will get the same answer
11.5*6.25=71.875
71.875/100=0.71875
or
0.115*6.25=0.71875
To calculate the mass of NaCl present in each solution, you will need to use the given percentage concentration and the total mass of the solution. Here's how you can do it step-by-step:
For the 6.25 g of 11.5% NaCl solution:
Step 1: Convert the percentage concentration to decimal form.
11.5% = 0.115
Step 2: Calculate the mass of NaCl using the formula:
mass of NaCl = percentage concentration * total mass of solution
mass of NaCl = 0.115 * 6.25 g
mass of NaCl = 0.71875 g
Therefore, the mass of NaCl present in the 6.25 g of 11.5% NaCl solution is 0.71875 grams.
For the 452 g of 12.3% NaCl solution:
Step 1: Convert the percentage concentration to decimal form.
12.3% = 0.123
Step 2: Calculate the mass of NaCl using the formula:
mass of NaCl = percentage concentration * total mass of solution
mass of NaCl = 0.123 * 452 g
mass of NaCl = 55.596 g
Therefore, the mass of NaCl present in the 452 g of 12.3% NaCl solution is 55.596 grams.
To calculate the mass of NaCl present in each solution, we need to use the given percentage and the total mass of the solution.
Let's start with the first solution, which is 6.25 g of an 11.5% NaCl solution.
Step 1: Calculate the mass of NaCl in the solution:
To find the mass of NaCl, we need to determine the mass of the solution. Since the solution is 11.5% NaCl, it means that 11.5% of the total mass is NaCl.
Mass of NaCl = (11.5/100) x Total mass of the solution
Step 2: Substitute the given information:
Given that the total mass of the solution is 6.25 g, we can insert the values into the equation:
Mass of NaCl = (11.5/100) x 6.25 g
Step 3: Calculate the mass of NaCl:
Let's perform the calculation:
Mass of NaCl = 0.115 x 6.25 g
Mass of NaCl = 0.71875 g
Therefore, the mass of NaCl present in the 6.25 g of 11.5% NaCl solution is approximately 0.719 g.
Now, let's move on to the second solution, which is 452 g of a 12.3% NaCl solution.
Step 1: Calculate the mass of NaCl in the solution:
Similar to the previous example, we will calculate the mass of NaCl using the percentage and the total mass of the solution.
Mass of NaCl = (12.3/100) x Total mass of the solution
Step 2: Substitute the given information:
Given that the total mass of the solution is 452 g:
Mass of NaCl = (12.3/100) x 452 g
Step 3: Calculate the mass of NaCl:
Now, let's perform the calculation:
Mass of NaCl = 0.123 x 452 g
Mass of NaCl = 55.596 g
Therefore, the mass of NaCl present in the 452 g of 12.3% NaCl solution is approximately 55.596 g.