B is the answer I think better sure
The answer would be b, or 2
Answer : The molar mass of an acid is 266.985 g/mole
Explanation : Given,
Mass of an acid (HX) = 4.7 g
Volume of NaOH = 32.6 ml = 0.0326 L
Molarity of NaOH = 0.54 M = 0.54 mole/L
First we have to calculate the moles of NaOH.
![\text{Moles of }NaOH=\text{Molarity of }NaOH\times \text{Volume of solution}=0.54mole/L\times 0.0326L=0.017604mole](https://tex.z-dn.net/?f=%5Ctext%7BMoles%20of%20%7DNaOH%3D%5Ctext%7BMolarity%20of%20%7DNaOH%5Ctimes%20%5Ctext%7BVolume%20of%20solution%7D%3D0.54mole%2FL%5Ctimes%200.0326L%3D0.017604mole)
Now we have to calculate the moles of an acid.
In the titration, the moles of an acid will be equal to the moles of NaOH.
Moles of an acid = Moles of NaOH = 0.017604 mole
Now we have to calculate the molar mass of and acid.
![\text{Moles of an acid}=\frac{\text{Mass of an acid}}{\text{Molar mass of an acid}}](https://tex.z-dn.net/?f=%5Ctext%7BMoles%20of%20an%20acid%7D%3D%5Cfrac%7B%5Ctext%7BMass%20of%20an%20acid%7D%7D%7B%5Ctext%7BMolar%20mass%20of%20an%20acid%7D%7D)
Now put all the given values in this formula, we get:
![0.017604mole=\frac{4.7g}{\text{Molar mass of an acid}}](https://tex.z-dn.net/?f=0.017604mole%3D%5Cfrac%7B4.7g%7D%7B%5Ctext%7BMolar%20mass%20of%20an%20acid%7D%7D)
![\text{Molar mass of an acid}=266.985g/mole](https://tex.z-dn.net/?f=%5Ctext%7BMolar%20mass%20of%20an%20acid%7D%3D266.985g%2Fmole)
Therefore, the molar mass of an acid is 266.985 g/mole
Answer:
3.6 times 10^4
Explanation:
Scientific notation is between 1-9. So, we move 36000 to 4 decimal places. SO it would be 3.6 times 10^4. Scientific Notation always has the base of 10 . Enjoy :)