Answer:
0.44 cal/(g C)
Explanation:
I assume the calorimeter is adiabatic.
First I need the specific heat capacity of iron, this is:
Cp(Fe) = 0.11 cal/(g * C)
Both bodies in the calorimeter will exchange heat until they reach equilibrium at the final temperature. The heat exchanged by each body is:
Q = m * Cp * (tfin - ti)The iron will be giving off heat (negative heat) and the liquid receiving it (positive heat, so:
-m(Fe) * Cp(Fe) *(tfin - ti(Fe)) = m(liq) * Cp(liq) * (tfin - ti(liq))
Rearranging:
![Cp(liq) = \frac{m(Fe) * Cp(Fe) *(tfin - ti(Fe))}{m(liq) * (tfin - ti(liq))}](https://tex.z-dn.net/?f=Cp%28liq%29%20%3D%20%5Cfrac%7Bm%28Fe%29%20%2A%20Cp%28Fe%29%20%2A%28tfin%20-%20ti%28Fe%29%29%7D%7Bm%28liq%29%20%2A%20%28tfin%20-%20ti%28liq%29%29%7D)
So:
![Cp(liq) = \frac{-190 * 0.11 *(38 - 190)}{260 * (38 - 10)} = 0.44 \frac{cal}{g C}](https://tex.z-dn.net/?f=Cp%28liq%29%20%3D%20%5Cfrac%7B-190%20%2A%200.11%20%2A%2838%20-%20190%29%7D%7B260%20%2A%20%2838%20-%2010%29%7D%20%3D%200.44%20%5Cfrac%7Bcal%7D%7Bg%20C%7D)
Answer:
Trigonal pyramid molecules (three identical bonds)
Explanation:
In trigonal pyramidal molecule like molecule of ammonia , the vector some of intra- molecular dipole moment is not zero because the bonds are not symmetrically oriented . In other molecules , bonds are symmetrically oriented in space so the vector sum of all the internal dipole moment vectors cancel each other to make total dipole moment zero.
Answer:
Hence mass of 2 moles of NaCl is 117g. The molar mass of NaCl is 58.44 g/mol. To calculate mass in grams, multiply the given moles by the molar mass.
Hello there! The correct answer is B) odor.
When you are wafting something, you're checking its smell in a careful way so you don't get harmed by potentially harmful chemicals. The odor of something is how it smells, or what smell it gives off, making this the correct choice. You can also eliminate A and D since the beginning of the question states that they are two clear liquids, so the color and texture won't differentiate one from the other. As well as this, it would not be C since it isn't smart to taste test chemicals in a lab, unless your teacher says it's okay.
I hope this helps and have a great day! :)
Answer:
B
Explanation:
Mass=concentration × volume
Therefore, concentration = mass/volume
C=6/2
C=3