Answer:
The heat needed to warm 406.0 mg of cyclohexane from 33.5°C to 38.9°C is 209.22 Joules
Explanation:
Where:
Q = heat absorbed or heat lost
c = specific heat of substance
m = Mass of the substance
ΔT = change in temperature of the substance
We have mass of cyclohexane = m = 406.0 mg = 0.4060 g
( 1 mg =0.001 g)
Specific heat of cyclohexane = c = 1.85 J/g°CK
ΔT = 38.9°C - 33.5°C = 5.4°C =5.4+273.15 K = 278.55 K
Heat absorbed by the cyclohexane :
The heat needed to warm 406.0 mg of cyclohexane from 33.5°C to 38.9°C is 209.22 Joules
Answer:The decay decomposes dead organisms and creates fertile soil.
Explanation:it helps to digest food, and to recycle materials in our environment.
Answer : The number of moles of 
formed are, 0.69 moles.
Explanation : Given,
Moles of 
= 0.345 mol
Now we have to calculate the moles of
The balanced chemical equation is:
From the balanced reaction, we conclude that
As, 1 mole of react to give 2 moles of
So, 0.345 mole of react to give 
mole of
Therefore, the number of moles of formed are, 0.69 moles.
Answer:
Vapour pressure of solution is 78.151 torr
Explanation:
Molar mass of biphenyl = 154.21 g
Molar mass of benzene = 78.11 g
19.2 g biphenyl = (19.2/154.21) moles of biphenyl = 0.125 moles of biphenyl
33.7 g of benzene = (33.7/78.11) moles of benzene = 0.431 moles of benzene
Total number of moles = (0.125+0.431) moles = 0.556 moles
Mole fraction of benzene in solution = (0.431/0.556) = 0.775
According to Roults law, vapour pressure of solution made from non-volatile solute = 
Here solute is biphenyl and solvent is benzene
So, vapour pressure of solution = 
= 78.151 torr
Answer:
C₃H₈₍g₎ + 5O₂₍g₎→ 3CO₂₍g₎ + 4H₂O₍l₎
Explanation:
Propane is an alkane that burns in enough oxygen to produce carbon (iv) Oxide and heat as the only by products. Balancing the equation: The number of atoms of each kind on either side should be equal. Hydrogen on the left has eight atoms same as the right side after balancing, oxygen has 10 while carbon has 3 on each side.
