A sample consisting of potassium chlorate and an inert material

  • Thread starter Thread starter priscilla98
  • Start date Start date
  • Tags Tags
    Material
AI Thread Summary
The discussion revolves around a chemistry problem involving a sample of potassium chlorate and an inert material that experiences a 20% weight loss upon heating. Participants express confusion about the implications of weight loss, questioning how it relates to the mass of the inert material and the potassium chlorate. Suggestions include using percent composition and writing a balanced reaction equation to clarify the process. The conversion of potassium chlorate to potassium chloride during heating is also mentioned as a key point. Understanding the chemical reactions and mass changes is essential for solving the problem effectively.
priscilla98
Messages
93
Reaction score
0

Homework Statement



A sample consisting of potassium chlorate and an inert material is intensely heated. The weight loss observed is 20.0 %. What percentage of the sample is inert material?

2. The attempt at a solution

I know when you heat potassium chlorate and another material, the mass would be more than the mass of the potassium chlorate and another material before heating. That's why I'm confused to the weight loss in this problem. Would you use an equation to solve this problem? I'm a little stuck on this question.
 
Physics news on Phys.org


priscilla98 said:

Homework Statement



A sample consisting of potassium chlorate and an inert material is intensely heated. The weight loss observed is 20.0 %. What percentage of the sample is inert material?

2. The attempt at a solution

I know when you heat potassium chlorate and another material, the mass would be more than the mass of the potassium chlorate and another material before heating. That's why I'm confused to the weight loss in this problem. Would you use an equation to solve this problem? I'm a little stuck on this question.



Would you use percent composition?
 


What happens to roasted potassium chlorate?
 


with manganese oxide, potassium chlorate turns to potassium chloride
 


Close, but not there yet. Try to write balanced reaction equation.
 
Thread 'Confusion regarding a chemical kinetics problem'

Thread 'Confusion regarding a chemical kinetics problem'

TL;DR Summary: cannot find out error in solution proposed. [![question with rate laws][1]][1] Now the rate law for the reaction (i.e reaction rate) can be written as: $$ R= k[N_2O_5] $$ my main question is, WHAT is this reaction equal to? what I mean here is, whether $$k[N_2O_5]= -d[N_2O_5]/dt$$ or is it $$k[N_2O_5]= -1/2 \frac{d}{dt} [N_2O_5] $$ ? The latter seems to be more apt, as the reaction rate must be -1/2 (disappearance rate of N2O5), which adheres to the stoichiometry of the...
View full post »

Thread 'Prove that evolution is constant (Provide at least two arguments to support your position)'

I don't get how to argue it. i can prove: evolution is the ability to adapt, whether it's progression or regression from some point of view, so if evolution is not constant then animal generations couldn`t stay alive for a big amount of time because when climate is changing this generations die. but they dont. so evolution is constant. but its not an argument, right? how to fing arguments when i only prove it.. analytically, i guess it called that (this is indirectly related to biology, im...
View full post »

Similar threads

Reasons for error in percentage of oxygen in KClO3 lab
Replies
3
Views
10K
What is the percentage of Fool's Gold in the original sample?
Replies
10
Views
2K
How to set up equation for drying agents, and calculating % recovery
Replies
9
Views
5K
Some Radiological Dating with Stoichiometry
Replies
4
Views
4K
Explanation of Iodine Equilibrium in immiscible solvents
Replies
3
Views
4K
Static Electricity- Solving Material Placement Issues
Replies
4
Views
2K
What is the best material for cryo ball mill cup assembly?
Replies
9
Views
3K
Determining Iron Oxide Composition in a Sample using Redox Titration
Replies
3
Views
10K
Surface oxidation of aluminum alloy and electrical continuity
Replies
16
Views
4K
I Temperature change due to mixing liquids, heating and heat losses
Replies
8
Views
2K

Hot Threads

Recent Insights

Back
Top