Answer:
disagree
Explanation:
Cellulose (main component of wood beside lignin) is composed from carbon, hydrogen and oxygen with the following molecular formula (C₆H₁₀O₅)ₓ (where x is the degree of condensation of beta-glucose units which are the basic monosaccharide of the cellulose polysaccharide).
Now when you burn cellulose you obtain carbon (ashes), carbon dioxide (CO₂) and water (H₂O). Of course, beside the main products we may have other by-products but we consider them in very low quantity.
The difference between 3 kg of starting wood and 500 g of ashes is representing the quantity of carbon dioxide (CO₂) and water (H₂O) formed.
We have to say that CO₂ and H₂O are in gaseous state and escape in the atmosphere.
The law of conservation of mass is always valid.
Answer:
869.93J/g°C
Explanation:
From the question given, we obtained the following:
M = 42.6g
T1 = 12°C
T2 = 46°C
ΔT = T2 — T1 = 46 — 12 = 34°C
C =?
Q = 1260 KJ = 1260000J
Q = MCΔT
C = Q / MΔT
C = 1260000 /(42.6 x 34)
C = 869.93J/g°C
Therefore, the specific heat capacity is 869.93J/g°C
Answer: Total pressure inside of a vessel is 0.908 atm
Explanation:
According to Dalton's law, the total pressure is the sum of individual partial pressures. exerted by each gas alone.
= partial pressure of nitrogen = 0.256 atm
= partial pressure of helium = 203 mm Hg = 0.267 atm (760mmHg=1atm)
= partial pressure of hydrogen =39.0 kPa = 0.385 atm (1kPa=0.00987 atm)
Thus
=0.256atm+0.267atm+0.385atm =0.908atm
Thus total pressure (in atm) inside of a vessel is 0.908
Answer:
final temperature of the cube
initial temperature of the cube
mass of the cube
specific heat of aluminum
Explanation:
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