Answer:
The total energy change, ΔE, in kilojoules = -61.93 kJ
Explanation:
Relationship between ΔH, ΔE and work done is given by first law of thermodynamics.
ΔE = ΔH - PΔV
Where,
ΔH = Change in enthalpy
ΔE = Change in internal energy
PΔV = Work done
Given that,
ΔH = -75.0 kJ = -75000 J
P = 43.0 atm
ΔV = Final volume - initial volume
= (2.00 - 5.00) = -3.00 L
PΔV = 43 × (-3.00) = -129 L atm
1 L atm = 101.325 J
-129 L atm = 129 × 101.325 = -13071 J
So ,
ΔE = ΔH - PΔV
= (-75000 J) - ( -13071 J)
= -75000 J + 13071 J
= -61929 J
Total energy change, ΔE = -61.929 kJ
<h2>Anabolic Reactions and Catabolic Reactions </h2>
Explanation:
Anabolic Reactions -
- Anabolic reactions are reactions that build larger molecules from smaller ones while the catabolic reactions are the reactions that break down molecules into smaller ones.
- Anabolic reactions are also called biosynthetic reactions because they synthesize larger molecules from smaller molecules or constituent parts.
- The energy used by these reactions to proceed is ATP.
- Anabolic reactions occur in cells for the synthesis of new proteins and other reactions.
Catabolic Reactions -
- Catabolic reactions are the reaction that includes the whole pathway of reaction that breaks down larger molecules into smaller units.
- These molecules are oxidized to release energy or sometimes used in other anabolic reactions occurring in the cell.
Answer:
Rift valleys
Explanation:
An example is the Great Rift Valley in Africa. As plates move apart, they leaves a gap in the crust.
Answer:
0.484 mole
Explanation:
1 mole of glucose reacts with 6 moles of O2, producing :
6 moles of CO2
6 moles of H2O
678 kcal
Using rule of three you have:
1 mole of glucose -> 678 kcal
x mole of glucose -> 328 kcal
x = 328/678 * 1 =0.484 mole
The formula of this reaction is 2C3H7OH + 9O2 = 6CO2 + 8H2O. So there is 0.45 mol O2 for combustion of 0.1 mol 1-propanol. At STP, 0.45 mol has volume of 10.08 dm3. The room temperature usually is 20℃. According to the formula V1/T1=V2/T2, you can get the finally volume is 10.8 dm3.