<h3>
Answer:</h3>
Empirical formula is CrO
<h3>
Explanation:</h3>
<u>We are given;</u>
- Mass of sample of Chromium as 7.337 gram
- Mass of the metal oxide formed as 9.595 g
We are required to determine the empirical formula of the metal oxide.
<h3>Step 1 ; Determine the mass of oxygen used </h3>
Mass of oxygen = Mass of the metal oxide - mass of the metal
= 9.595 g - 7.337 g
= 2.258 g
<h3>Step 2: Determine the moles of chromium and oxygen</h3>
Moles of chromium metal
Molar mass of chromium = 51.996 g/mol
Moles of Chromium = 7.337 g ÷ 51.996 g/mol
= 0.141 moles
Moles of oxygen
Molar mass of oxygen = 16.0 g/mol
Moles of Oxygen = 2.258 g ÷ 16.0 g/mol
= 0.141 moles
<h3>Step 3: Determine the simplest mole number ratio of Chromium to Oxygen</h3>
Mole ratio of Chromium to Oxygen
Cr : O
0.141 mol : 0.141 mol
1 : 1
Empirical formula is the simplest whole number ratio of elements in a compound.
Thus the empirical formula of the metal oxide is CrO
Answer: Chlorine gas is produced when sulfuric acid is mixed with chlorine bleach.
Explanation: This reaction is a function of the change in pH of the solution from alkaline to acidic combined with the strong oxidant properties of hypochlorous acid.
<h2><u><em>
Make sure to reword this in your words!!!</em></u></h2>
Answer:
The pH of the solution is 12.31 .
Explanation:
Initial molarity of barium hydroxide =
Initial volume of barium hydroxide =
Final molarity of barium hydroxide =
Final volume of barium hydroxide =
1 mol of barium gives 2 mol of hydroxide ions.
Then 0.0104 M of barium hydroxide will give:
of hydroxide ions
![[OH^-]=0.0208 M](https://tex.z-dn.net/?f=%5BOH%5E-%5D%3D0.0208%20M)
![pH=14-pOH=14-(-\log[OH^-])](https://tex.z-dn.net/?f=pH%3D14-pOH%3D14-%28-%5Clog%5BOH%5E-%5D%29)
![pH=14-(-\log[0.0208 M])=12.31](https://tex.z-dn.net/?f=pH%3D14-%28-%5Clog%5B0.0208%20M%5D%29%3D12.31)
The pH of the solution is 12.31 .
A hydrocarbon with three or more consecutive (cumulative) double bonds is known as a cumulene. They are analogous to allenes, only exhibiting a more elongated chain. The basic molecule in this category is butatriene, which is also simply known as cumulene.
In the structure of a cumulene, there are 3 double bonds and 4 single bonds. The double bond comprises 1 sigma bond, and 1 pi bond and 4 hydrogen bond produces a sigma bond with carbon. Thus, the molecule of cumulene comprises 7 sigma bonds and 3 pi bonds.
HBrO2 is weaker than HClO2.
