How many moles of hydrogen are needed to produce 8 moles of methane CH4? C + H2-> CH4
1 answer:
Answer:
20 mol H₂
General Formulas and Concepts:
<u>Chem</u>
- Stoichiometry
Explanation:
<u>Step 1: Define</u>
RxN: C + H₂ → CH₄
8 moles CH₄
<u>Step 2: Balance RxN</u>
C + 2H₂ → CH₄
<u />
<u>Step 3: Stoichiometry</u>
= 16 mol H₂
<u>Step 4: Check</u>
<em>We are given 1 sig fig. Follow sig fig rules.</em>
16 mol H₂ ≈ 20 mol H₂
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Answer:
The pressure is 5.62 atm.
Explanation:
An ideal gas is a theoretical gas that is considered to be composed of randomly moving point particles that do not interact with each other. Gases in general are ideal when they are at high temperatures and low pressures.
An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of the gases:
P * V = n * R * T
In this case:
- P= ?
- V= 5.005 L
- n= 1.255 mol
- R= 0.082
- T= 273.5 K
Replacing:
P* 5.005 L= 1.255 mol* 0.082 *273.5 K
Solving:
P= 5.62 atm
<u><em>The pressure is 5.62 atm.</em></u>