The intreval volume of a clorimeter was1.12L. A sample of gas of 1.863g of nonae was added, and the closed calorimeter then had added oxygen until the pressure was 10.0atm na dht etemp was 23.1 C.Write the full balanced equation of the combustion of the nonae in the calorimeter.
Ho many moles of oxyen were present before combustion? and how many grams of oxygen were formed after combustion if the nonane was completyl consumed? need help with the work not the answer.
To write the full balanced equation of the combustion of nonane (C9H20), we need to understand the products formed during combustion. Combustion typically produces carbon dioxide (CO2) and water (H2O) as products. Here's how you can balance the equation:
1. Write the unbalanced equation:
C9H20 + O2 → CO2 + H2O
2. Start by balancing the carbon atoms on both sides of the equation:
C9H20 + O2 → 9CO2 + H2O
3. Balance the hydrogen atoms next:
C9H20 + O2 → 9CO2 + 10H2O
4. Lastly, balance the oxygen atoms by adding the appropriate coefficient in front of O2:
C9H20 + 14.5O2 → 9CO2 + 10H2O
Since we're dealing with combustion, it is typically assumed that the oxygen is in excess.
Now, to determine the moles of oxygen present before combustion, we need to use the ideal gas law. The equation is:
PV = nRT
Given:
Pressure (P) = 10.0 atm
Volume (V) = 1.12 L
Temperature (T) = 23.1 °C = 296.25 K (convert to Kelvin)
R = 0.0821 L.atm/(mol.K) (gas constant)
We can rearrange the ideal gas law equation to solve for moles (n):
n = PV / RT
Calculating:
n = (10.0 atm) * (1.12 L) / (0.0821 L.atm/(mol.K) * 296.25 K)
Now, you need to perform this calculation to find the moles of oxygen present before combustion.
Next, to determine the number of grams of oxygen formed after combustion, we need to convert the moles of oxygen (from the balanced equation) to grams.
The molar mass of O2 is 32.00 g/mol. So, using the mole-to-gram conversion:
grams = moles * molar mass
Substitute the value of moles from the previous calculation and perform this calculation to find the grams of oxygen formed after combustion.
Remember, these steps are a guide to help you understand the process of solving the problem. Make sure to show your work and use the correct units during calculations to arrive at the correct answers.