Lesson Example Discussion Quiz: Class Homework |
Step-3 |
Title: Volume |
Grade: 6-a Lesson: S3-L4 |
Explanation: Let us verify the answer here with the steps. |
Lesson Steps Head1
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
A chemistry experiment requires you to mix 450 mL of a 2 Molar (2M) solution with 1.5 L of water. What will be the final concentration of the solution in moles per liter (M)? |
|
2 |
Step |
To determine the final concentration of the solution after mixing, use the formula for dilution: |
M1 V 1 = M2 V2 |
3 |
Step |
M1 is the initial molarity of the solution = 2M |
|
4 |
Step |
V1 is the initial volume of the solution = 450mL |
|
5 |
Step |
M2 is the final molarity of the solution =? |
|
6 |
Step |
V2 is the final volume of the solution = 450mL + 1.5L = 450mL + 1500mL = 1950mL |
|
7 |
Step |
Now, plug the values into the dilution formula and solve for M2 |
\$=> (2M) times (450mL) = M2 times (1950mL)\$ \$=> (900"mol/L") = M2 times (1950"mol/L")\$ |
8 |
Step |
M2 = \$(900"mol/L") / (1950"mol/L")\$ M2 = 0.4615M (approximately) |
|
9 |
Step |
So, the final molarity of the solution after mixing will be approximately = 0.46 M (rounded to two decimal places) |
|
10 |
Answer |
A |
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