<u>Answer:</u> The final temperature of water is 32.3°C
<u>Explanation:</u>
When two solutions are mixed, the amount of heat released by solution 1 (liquid water) will be equal to the amount of heat absorbed by solution 2 (liquid water)
![Heat_{\text{absorbed}}=Heat_{\text{released}}](https://tex.z-dn.net/?f=Heat_%7B%5Ctext%7Babsorbed%7D%7D%3DHeat_%7B%5Ctext%7Breleased%7D%7D)
The equation used to calculate heat released or absorbed follows:
![Q=m\times c\times \Delta T=m\times c\times (T_{final}-T_{initial})](https://tex.z-dn.net/?f=Q%3Dm%5Ctimes%20c%5Ctimes%20%5CDelta%20T%3Dm%5Ctimes%20c%5Ctimes%20%28T_%7Bfinal%7D-T_%7Binitial%7D%29)
......(1)
where,
q = heat absorbed or released
= mass of solution 1 (liquid water) = 50.0 g
= mass of solution 2 (liquid water) = 29.0 g
= final temperature = ?
= initial temperature of solution 1 = 25°C = [273 + 25] = 298 K
= initial temperature of solution 2 = 45°C = [273 + 45] = 318 K
c = specific heat of water= 4.18 J/g.K
Putting values in equation 1, we get:
![50.0\times 4.18\times (T_{final}-298)=-[29.0\times 4.18\times (T_{final}-318)]\\\\T_{final}=305.3K](https://tex.z-dn.net/?f=50.0%5Ctimes%204.18%5Ctimes%20%28T_%7Bfinal%7D-298%29%3D-%5B29.0%5Ctimes%204.18%5Ctimes%20%28T_%7Bfinal%7D-318%29%5D%5C%5C%5C%5CT_%7Bfinal%7D%3D305.3K)
Converting this into degree Celsius, we use the conversion factor:
![T(K)=T(^oC)+273](https://tex.z-dn.net/?f=T%28K%29%3DT%28%5EoC%29%2B273)
![305.3=T(^oC)+273\\T(^oC)=(305.3-273)=32.3^oC](https://tex.z-dn.net/?f=305.3%3DT%28%5EoC%29%2B273%5C%5CT%28%5EoC%29%3D%28305.3-273%29%3D32.3%5EoC)
Hence, the final temperature of water is 32.3°C
<span>N2O3
Determine the number of moles of oxygen and nitrogen you have:
Atomic weight nitrogen = 14.0067
Atomic weight oxygen = 15.999
Moles nitrogen = 7.37 / 14.0067 = 0.526176758 moles
Moles oxygen = (20 - 7.37) / 15.999 = 12.63 / 15.999
= 0.789424339 moles
So the nitrogen to oxygen ratio is
0.526176758 : 0.789424339
We need a ratio of small integers that's close to the above ratio, so divide by the smallest number in ratio, getting
1 : 1.500302564
The 1.500 isn't close, but it does indicate that multiplying by 2 should be useful, giving
2 : 3.000605127
And the ratio 2:3 looks good. So the empirical formula for the unknown compound is N2O3</span>
Sodium Chloride or NaCl is a ionic bond
Answer:
What is this asking for?
Explanation:
I’ll put the answer in the comments
I hope this helps with your question .
Acceleration has the dimensions of velocity (L/T) divided by time, i.e. L.T−2. The SI unit of acceleration is the metre per second squared (m s−2); or "metre per second per second", as the velocity in metres per second changes by the acceleration value, every second.