Answer is: C. H3PO4, phosphoric acid.
A) HClO₂ is chlorous acid.
Chlorous acid is weak inorganic acid. In this acid, chlorine has oxidation number +3.
B) HNO₂ is nitrous acid.
Nitrous acid is a weak monobasic acid. In this acid, nitrogen has oxidation number +3.
D) HI is hydroiodic acid.
Hydroiodic acid is a highly acidic aqueous solution of hydrogen iodide. In this acid, iodine has oxidation number -1.
Answer:
.....................................
Explanation:
..................................................................
In a solution of salt and water if the concentration of salt molecule is greater outside a cell than inside then water molecules will; move out of the cell, and the cell will shrivel.
Answer: Thus there are 0.0870 moles of water sample.
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number
of particles.
To calculate the moles, we use the equation:
![\text{Number of moles}=\frac{\text{Given molecules}}{\text {avogadro's number}}](https://tex.z-dn.net/?f=%5Ctext%7BNumber%20of%20moles%7D%3D%5Cfrac%7B%5Ctext%7BGiven%20molecules%7D%7D%7B%5Ctext%20%7Bavogadro%27s%20number%7D%7D)
![\text{Number of moles of water}=\frac{5.24\times 10^{22}}{6.023\times 10^{23}}=0.0870moles](https://tex.z-dn.net/?f=%5Ctext%7BNumber%20of%20moles%20of%20water%7D%3D%5Cfrac%7B5.24%5Ctimes%2010%5E%7B22%7D%7D%7B6.023%5Ctimes%2010%5E%7B23%7D%7D%3D0.0870moles)
Thus there are 0.0870 moles of water sample.