The mass (g) of the original sample after decomposition is 8.3983 g.
A decomposition reaction can be described as a chemical reaction wherein one reactant breaks down into or extra merchandise.
explanation:
Reaction 2KClO₃ ⇒ 2KCl + 3O₂
moles 2 2 3
molar mass 122.55 74.55 32
Given, Mass of O₂ = 3.29g ⇒ moles of O₂
= (3.29/32) = 0.1028
3 moles of O₂ produced by 2 moles of KClO₃
Therefore, 0.1028 moles of O₂ produced by (2*0.1028/3) = 0.06853 moles of Kclo₃
Mass of KClo₃ in original sample is = moles * molar mass
= 0.06853 * 122.55
= 8.3983 g
A decomposition response occurs whilst one reactant breaks down into or extra merchandise. this may be represented through the general equation: XY → X+ Y. Examples of decomposition reactions consist of the breakdown of hydrogen peroxide to water and oxygen, and the breakdown of water to hydrogen and oxygen.
Learn more about decomposition here:-brainly.com/question/27300160
#SPJ4
Diamond is an allotrope of carbon; that just means it is a different crystalline structure, but pure diamond contains only carbon atoms. (unrelated, but interesting - colored diamonds come from impurities like boron and nitrogen in the crystal structure!) The molar mass of carbon is 12.01 g/mol. You can find the molar mass by looking at the periodic table. If you look under number 6, Carbon, you should see the atomic weight right under it: 12.01. The molar mass is this same number, in grams. That means that one mole, or 6.022E23 carbon atoms, weigh 12.01 grams.
<span>But you don't have one mole. You only have 2 grams. </span>
<span>So how many moles do you have? 2 grams out of 12 grams. 2/12 = 1/6 or 0.167. You have 1/6th of a mole. One mole is 6.022E23 atoms, but you only have 1/6th of that. I hope that thinking about it stepwise like this makes sense to you. It works the same for other atoms and molecules too. In a molecule, you would just add up the molar mass of all the component atoms. I hope this helps.
</span>
The given question is incomplete. The complete question is:
A sample of household ammonia has a pH of 11.50. What is the hydronium ion concentration of this solution?
Answer: The hydronium ion concentration of the solution is 
Explanation:
pH or pOH is the measure of acidity or alkalinity of a solution.
pH is calculated by taking negative logarithm of hydrogen ion concentration. Acids have pH ranging from 1 to 6.9 and bases have pH ranging from 7.1 to 14.
![pH=-\log [H^+]](https://tex.z-dn.net/?f=pH%3D-%5Clog%20%5BH%5E%2B%5D)
![11.8=-log [H^+]](https://tex.z-dn.net/?f=11.8%3D-log%20%5BH%5E%2B%5D)
![[H^+]=antilog(-11.8)](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%3Dantilog%28-11.8%29)
![[H^+]=1.58\times 10^{-12}M](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%3D1.58%5Ctimes%2010%5E%7B-12%7DM)
Thus hydronium ion concentration of this solution is
In this solution we are having two components i.e. NaCl and H₂O. So the %age mass of NaCl is calculated by following formula,
%age mass of NaCl = (Mass of NaCl / Mass of NaCl + Mass of H₂O) × 100 ------ (1)
Calculating Mass of NaCl at 50°C;
Solubility of NaCl was searched online and was found 36.69 g / 100 mL of water at 50 °C.
Calculating Mass of 100 mL H₂O at 50°C;
Density of H₂O at 50 °C is 0.988 g/ml, so for 100 mL
As,
Density = Mass / Volume
Mass = Density × Volume
Mass = 0.988 g/mL × 100 mL
Mass = 98.8 g
Putting Masses of NaCl and H₂O in eq. 1,
%age mass of NaCl = (36.69 g / 36.69 g + 98.8 g) × 100
%age mass of NaCl = (36.69 g / 135.49 g) × 100
%age mass of NaCl = 27.07 %
