Answer:
in simple words plant is something that gives food and oxygen they come in producers
If 20.0 grams of ice takes about 6680j...then 40.0 grams of ice would take ___ .
Internal combustion energy for TNT(Trinitro toluene) is found to be -170 kJ.
Internal energy= (- heat evolved by the system) + Work done by the system
ΔU = -Q+W
W = - PΔV
P= pressure
ΔV =difference in volume
Given,
V1 = 10 L
V2 = 90 L
∴ΔV = V2-V1 = 90-10 = 80 L
P = 1 atm
∴W = - ( 1× 80)
= -80 kJ
Heat evolved by the system = 90 kJ
∴Δ U= - 90 kJ - 80 kJ
= - 170 kJ
Thus, Internal combustion energy for TNT(Trinitro toluene) is found to be -170 kJ.
NOTE : here work done by the system is considered negative and also heat evolved by the system is taken -Ve.
Learn more about internal energy here..
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Answer:
P = 5.14 atm
Explanation:
Given that,
Pressure of the gas, P = 0.108 mol
Temperature, T = 293 K
Volume, V = 0.505 L
We need to find the pressure of the gas. We know that, according to ideal gas equation,
PV = nRT
Where
P is pressure and R is gas constant
![P=\dfrac{nRT}{V}\\\\P=\dfrac{0.108 \times 0.0821\times 293}{0.505}\\\\P=5.14\ atm](https://tex.z-dn.net/?f=P%3D%5Cdfrac%7BnRT%7D%7BV%7D%5C%5C%5C%5CP%3D%5Cdfrac%7B0.108%20%5Ctimes%200.0821%5Ctimes%20293%7D%7B0.505%7D%5C%5C%5C%5CP%3D5.14%5C%20atm)
So, the pressure of the gas is equal to 5.14 atm.
The correct answer is A) the number of electrons that fill the outer shell.
Brady