Answer: There are 0.006 moles of acid in the flask.
Explanation:
Given:
= 21.35 mL,
= 0.150 M
= 25.0 mL,
= ?
Formula used to calculate molarity of
is as follows.
![M_{1}V_{1} = M_{2}V_{2}](https://tex.z-dn.net/?f=M_%7B1%7DV_%7B1%7D%20%3D%20M_%7B2%7DV_%7B2%7D)
Substitute the values into above formula as follows.
![M_{1}V_{1} = M_{2}V_{2}\\0.15 M \times 21.35 mL = M_{2} \times 25.0 mL\\M_{2} = 0.1281 M](https://tex.z-dn.net/?f=M_%7B1%7DV_%7B1%7D%20%3D%20M_%7B2%7DV_%7B2%7D%5C%5C0.15%20M%20%5Ctimes%2021.35%20mL%20%3D%20M_%7B2%7D%20%5Ctimes%2025.0%20mL%5C%5CM_%7B2%7D%20%3D%200.1281%20M)
As molarity is the number of moles of a substance present in a liter of solution.
Total volume of solution = ![V_{1} + V_{2}](https://tex.z-dn.net/?f=V_%7B1%7D%20%2B%20V_%7B2%7D)
= 21.35 mL + 25.0 mL
= 46.36 mL (1 mL = 0.001 L)
= 0.04636 L
Therefore, moles of acid required are calculated as follows.
![Molarity = \frac{no. of moles}{Volume (in L)}\\0.1281 M = \frac{no. of moles}{0.04635 L}\\no. of moles = 0.006 mol](https://tex.z-dn.net/?f=Molarity%20%3D%20%5Cfrac%7Bno.%20of%20moles%7D%7BVolume%20%28in%20L%29%7D%5C%5C0.1281%20M%20%3D%20%5Cfrac%7Bno.%20of%20moles%7D%7B0.04635%20L%7D%5C%5Cno.%20of%20moles%20%3D%200.006%20mol)
Thus, we can conclude that there are 0.006 moles of acid in the flask.
Answer:
Mn2O3
Explanation:
Manga has a 3+ charge and oxygen has a 2- charge so to balance the charges there needs to be 3 oxygens for every 2 manga
In the periodic table, there are seven horizontal rows of elements called periods.