Answer:
941.4 kPa
Explanation:
To solve this problem, we can use Boyle's Law, which states that:
"For a fixed mass of an ideal gas kept at constant temperature, the pressure of the gas is inversely proportional to its volume"
Mathematically:
![p\propto \frac{1}{V}](https://tex.z-dn.net/?f=p%5Cpropto%20%5Cfrac%7B1%7D%7BV%7D)
where
p is the pressure of the gas
V is its volume
For a gas transformation, the equation can be rewritten as
![p_1 V_1 = p_2 V_2](https://tex.z-dn.net/?f=p_1%20V_1%20%3D%20p_2%20V_2)
where in this problem:
is the initial pressure
is the initial volume
is the final volume
Solving for p2, we find the final pressure:
![p_2 = \frac{p_1 V_1}{V_2}=\frac{(102)(48)}{5.2}=941.5 kPa](https://tex.z-dn.net/?f=p_2%20%3D%20%5Cfrac%7Bp_1%20V_1%7D%7BV_2%7D%3D%5Cfrac%7B%28102%29%2848%29%7D%7B5.2%7D%3D941.5%20kPa)
Givens
m = 2.26 g
c = 4.19 J/(g * oC)
Δt = 23.5oC - 0 = 23.5oC
hf = heat of fusion for ice = 334 J/g
Equation
H = m*c*Δt + hf * m
H = m*(c*Δt + hf)
Solution
H = 2.26 * (4.19 * 23.5 + 334)
H = 2.26 * (432.5)
H = 977.4 J
Answer: ![2.49\ m^3](https://tex.z-dn.net/?f=2.49%5C%20m%5E3)
Explanation:
Given
Mass of nitrogen present ![m=28\ g](https://tex.z-dn.net/?f=m%3D28%5C%20g)
Temperature ![T=27^{\circ}C\equiv 300\ K](https://tex.z-dn.net/?f=T%3D27%5E%7B%5Ccirc%7DC%5Cequiv%20300%5C%20K)
Pressure ![P=785\ mm\ \text{of}\ Hg\ \text{or}\ 1.032\ atm](https://tex.z-dn.net/?f=P%3D785%5C%20mm%5C%20%5Ctext%7Bof%7D%5C%20Hg%5C%20%5Ctext%7Bor%7D%5C%201.032%5C%20atm)
The molar mass of Nitrogen ![M=28\ g/mol](https://tex.z-dn.net/?f=M%3D28%5C%20g%2Fmol)
No of moles of nitrogen present
![n=\dfrac{m}{M}\\\\n=\dfrac{28}{28}\\\\n=1](https://tex.z-dn.net/?f=n%3D%5Cdfrac%7Bm%7D%7BM%7D%5C%5C%5C%5Cn%3D%5Cdfrac%7B28%7D%7B28%7D%5C%5C%5C%5Cn%3D1)
Using ![PV=nRT](https://tex.z-dn.net/?f=PV%3DnRT)
![\Rightarrow 1.032\times V=1\times 8.314\times 300\\\\\Rightarrow V=\dfrac{2494.2}{1.032}\\\\\Rightarrow V=2494.2\ L\ \text{or}\ 2.49\ m^3](https://tex.z-dn.net/?f=%5CRightarrow%201.032%5Ctimes%20V%3D1%5Ctimes%208.314%5Ctimes%20300%5C%5C%5C%5C%5CRightarrow%20V%3D%5Cdfrac%7B2494.2%7D%7B1.032%7D%5C%5C%5C%5C%5CRightarrow%20V%3D2494.2%5C%20L%5C%20%5Ctext%7Bor%7D%5C%202.49%5C%20m%5E3)
Answer:
It should be silicon... I even googled it to see if I was correct and that’s what it says so can someone figure out why silicon is not an answer
Explanation: