Answer:
i

ii

Explanation:
From the question we are told that
The first temperatures is 
The second temperature is 
Generally the equation for the most highly populated rotational energy level is mathematically represented as
![J_{m} = [ \frac{RT}{2B}] ^{\frac{1}{2} } - \frac{1}{2}](https://tex.z-dn.net/?f=J_%7Bm%7D%20%3D%20%5B%20%5Cfrac%7BRT%7D%7B2B%7D%5D%20%20%5E%7B%5Cfrac%7B1%7D%7B2%7D%20%7D%20-%20%5Cfrac%7B1%7D%7B2%7D)
Here R is the gas constant with value 
Also
B is given as 
Generally the energy require per mole to move 1 cm is 12 J /mole
So
will require x J/mole

=> 
So at the first temperature
![J_{m} = [ \frac{8.314 * 298 }{2* 2.928 }] ^{\frac{1}{2} } - 0.5](https://tex.z-dn.net/?f=J_%7Bm%7D%20%3D%20%5B%20%5Cfrac%7B8.314%20%2A%20298%20%20%7D%7B2%2A%20%202.928%20%7D%5D%20%20%5E%7B%5Cfrac%7B1%7D%7B2%7D%20%7D%20-%200.5%20)
=> 
So at the second temperature
![J_{m} = [ \frac{8.314 * 373 }{2* 2.928 }] ^{\frac{1}{2} } - 0.5](https://tex.z-dn.net/?f=J_%7Bm%7D%20%3D%20%5B%20%5Cfrac%7B8.314%20%2A%20373%20%20%7D%7B2%2A%20%202.928%20%7D%5D%20%20%5E%7B%5Cfrac%7B1%7D%7B2%7D%20%7D%20-%200.5%20)
=> 
Average speed of the trip = 52 km/hr
<h3>Further explanation </h3>
Distance is the length traveled by an object within a certain of time .
Average speed = total distance/total amount of time ,
Can be formulated :

Total distance travelled : 1560 km
Total time : 8 hr + 12 hr + 10 hr = 30 hr

Answer:
1. 2.510kJ
2. Q = 1.5 kJ
Explanation:
Hello there!
In this case, according to the given information for this calorimetry problem, we can proceed as follows:
1. Here, we consider the following equivalence statement for converting from calories to joules and from joules to kilojoules:

Then, we perform the conversion as follows:

2. Here, we use the general heat equation:

And we plug in the given mass, specific heat and initial and final temperature to obtain:

Regards!
Na₂S(aq) + Cd(NO₃)₂(aq) = CdS(s) + 2NaNO₃(aq)
v=25.00 mL
c=0.0100 mmol/mL
M(Na₂S)=78.046 mg/mmol
n(Na₂S)=n{Cd(NO₃)₂}=cv
m(Na₂S)=M(Na₂S)n(Na₂S)=M(Na₂S)cv
m(Na₂S)=78.046*0.0100*25.00≈19.5 mg
Answer: Option (c) is the correct answer.
Explanation:
HF is a weak acid and not a strong acid. This is because fluorine is a highly electronegative atom and when it combines with a hydrogen atom then it will attract the valence electron of hydrogen atom more towards itself.
As a result, it will not dissociates easily to give hydrogen ion. Hence, it acts as a weak acid.
A neutralization reaction is defined as a reaction in which an acid reacts with a base to give salt and water. For example, 
It is true that, spectator ions "appear in the total ionic equation for a reaction, but not in the net ionic equation".
Titration is defined as a process in which concentration of an unknown solution is determined using a solution of known concentration.
Thus, we can conclude that the statement HF, HCl, and HNO3 are all examples of strong acids, is false.