B) They contain substances that can react with either added acid or base.
Answer:
Mass = 176 g
Explanation:
Given data:
Volume of CH₄ = 89.6 L
Mass of CO₂ formed = ?
Solution:
Chemical equation:
CH₄ + 2O₂ → CO₂ + 2H₂O
one mole of any gas at STP occupy 22.4 L volume.
number of moles of CH₄ that occupy 89.6 L = 89.6/22.4 = 4 mol
Now we will compare the moles of CH₄ and CO₂:
CH₄ : CO₂
1 : 1
4 : 4
Mass of CO₂:
Mass = number of moles × molar mass
Mass = 4 mol × 44 g/mol
Mass = 176 g
Answer: d) -705.55 kJ
Explanation:
Heat of reaction is the change of enthalpy during a chemical reaction with all substances in their standard states.
Reversing the reaction, changes the sign of
On multiplying the reaction by , enthalpy gets half:
Thus the enthalpy change for the given reaction is -705.55kJ
Answer:
Shenzi
Banzai
Ed
Scar
Simba
Timon
Pumbaa
Explanation:
they don't make their own food but get it from other organisims
T(1/2)=1/(k[NO2])
[NO2]=1/(kt(1/2))
[NO2]=1/(0.54M-1 s-1*22s) seconds cancel
[NO2]=1/11.88=0.0842
inital mole= 0.0842*volume(2.5)=0.210 mols