Answer:
290 grams
Explanation:
Let's begin by writing the balanced chemical equations:

Then we calculate the number of moles in 97g of propane.
n(propane)=
According to the balanced chemical equation, one mole of propane produces 3 moles of carbon dioxide. So the available number of moles of propane must be multiplied by three to work out the number of carbon dioxide produced.
n(carbon dioxide)= 2.1995mol*3 = 6.5985mol
mass(carbon dioxide) = moles * molar mass
                                    = 6.5985 mol * 44.01 g/mol
                                    = 290 grams
 
        
             
        
        
        
It would be insulator because an insulator kills electricity, it can't travel through it. 
        
                    
             
        
        
        
Answer:
I believe this is a K-12 test question. If the answers below are what you have on your test . . .
- Precise
- Accurate
- Identical
- None of the above
Then the answer is <u>precise</u>.
 
        
             
        
        
        
Answer:
Explanation:
Let the number of half lives be x
<u>Solve this equation to find the value of x:</u>
- 125*(1/2)ˣ = 3.90625
 - (0.5)ˣ = 3.90625 / 125
 - (0.5)ˣ = 0.03125
 - log (0.5)ˣ  = log 0.03125
 - x =  log 0.03125 / log 0.5
 - x = 5