Answer:
The correct answer is option a.
Explanation:
Moles of octane =
Moles of oxygen gas =
According to reaction, 25 moles of oxygen reacts with 2 moles of octane.
Then 0.46875 moles of oxygen will react with:
of octane
Oxygen is present in limited amount. Hence, limiting reagent.
According to reaction , 25 moles of oxygen gives 16 moles of carbon-dioxide.
Then 0.46875 moles of oxygen will give:
of carbon-dioxide
Mass of 0.3 moles of carbon-dioxide:
0.3 g × 44 g/mol = 13.2 g
Theoretical yield = 13.2 g
Experimental yield = x
Percentage yield of carbon dioxide = 93 %
x =12.27 g ≈ 12 g
12 grams of carbon dioxide will be produced in this engine .
<span>All collisions between atoms or molecules are perfectly elastic and are not the result of any attractive forces is the best answer in my opinion since ideal gas particles have elastic collisions and do not interact with each other.</span>
Answer:
0.432 drinks are toxic
Explanation:
The toxic dose of ethylene glycol is 0.1 mL per kg body weight (mL/kg). In grams (Density ethylene glycol = 1.11g/mL):
1.11g/mL * (0.1mL / kg) = 0.111g/kg
If the victim weighs 85kg, its letal dose is:
85kg * (0.111g/kg) = 9.435g of ethylene glycol
Using the concentration of ethylene glycol in the liquid:
9.435g of ethylene glycol * (550g liquid / 120g ethylene glycol) = 43.2g of liquid are toxic.
The drinks are:
43.2g of liquid * (1 drink / 100 g) =
<h3>0.432 drinks are toxic</h3>
<span>C. Static electricity. Except that electrons are never really at rest.</span>