Answer is: <span>b) 9,042 L.
Ideal gas law: p</span>·V = n·R·T.
p is the pressure of the gas.
V is the volume of the gas.
n is amount of substance.
R is universal gas constant.
T is temperature.
T₁ = 15°C = 288 K.
V₁ = 10,5 L.
T₂ = -25°C = 248 K.
V₂ = ?
V₁/T₁ = V₂/T₂
V₂ = 10,5 L · 248 K ÷ 288 K
V₂ = 9,042 L.
Bc they dooooooooooooooooooo
Copper is a good conductor of heat and electricity so it will not fry easily
Answer : The reaction is endothermic.
Explanation :
Formula used :
![Q=m\times c\times \Delta T](https://tex.z-dn.net/?f=Q%3Dm%5Ctimes%20c%5Ctimes%20%5CDelta%20T)
where,
= change in temperature = ![1.05^oC](https://tex.z-dn.net/?f=1.05%5EoC)
Q = heat involved in the dissolution of KCl = ?
m = mass = 0.500 + 50.0 = 50.5 g
c = specific heat of resulting solution = ![4.18J/g^oC](https://tex.z-dn.net/?f=4.18J%2Fg%5EoC)
Now put all the given value in the above formula, we get:
![Q=50.5g\times 4.18J/g^oC\times 1.05^oC](https://tex.z-dn.net/?f=Q%3D50.5g%5Ctimes%204.18J%2Fg%5EoC%5Ctimes%201.05%5EoC)
![Q=+221.64J](https://tex.z-dn.net/?f=Q%3D%2B221.64J)
The heat involved in the dissolution of KCl is positive that means as the change in temperature decreases then the reaction is endothermic and as the change in temperature increases then the reaction is exothermic.
Hence, the reaction is endothermic.