Answer:
Balanced equation: 
The coefficient of water is 8
Explanation:
Oxidation: 
Balance O and H in basic medium: 
Balance charge: 
......(1)
Reduction: 
Balance O and H in basic medium: 
Balance charge: 
.....(2)
![[2\times equation(1)]+[3\times equation(2)]:](https://tex.z-dn.net/?f=%5B2%5Ctimes%20equation%281%29%5D%2B%5B3%5Ctimes%20equation%282%29%5D%3A)
The coefficient of water is 8.
Answer:
0.133 M
Explanation:
The volume of the solution is given, so in order to find concentration, the number of moles must be found, since C = n/V.
The balanced reaction equation is:
HI + KOH ⇒ H₂O + KI
Thus, the moles of KOH added to neutralize all of the HI will be equal to the moles of HI that must have been present.
The amount of KOH that was added is calculated as follows.
n = CV = (0.145 mol/L)(45.7 mL) = 6.6265 mmol KOH = 6.6265 mmol HI
Since HI and KOH are related in a 1:1 molar ratio, the same amount of HI must have been present.
Finally, the concentration of HI is calculated:
C = n/V = (6.6265 mmol) / (50.0 mL) = 0.133 mol/L = 0.133 M
Answer:
1. Hyphothesis 2.Theory 3. law
Explanation:
not sure, but law is observation, theory is based on knowledge things before.
Molecules with ionic bonds between their components will dissociate in water releasing charged particles called ions in solution.
Answer:
molecules of nitrogen gas
Explanation:
In order to convert the mass of a given compound into the number of molecules, we need to:
- identify the number of moles of a given compound dividing its mass by the molar mass,
, - multiply the number of moles by the Avogadro's constant which tells us that 1 mole contains
molecules.
In this problem:
The number of particles is then found by:
