Answer:
A) IV: number of hours DV: score
Explanation:
Coz,
IV- is the variable that u change
DV- is the variable that u test or measure
In this case, we need to change the hours of studying to see how studying for different hours [1 hr, 2hr, etc (( Independant variable coz we're changing the no. of hours)) ] is going to affect the student's score, and in the end, we are measuring the score of each student [this is the dependant variable].
It would be A, Petroleum.
Hope this helped!
-William
To calculate, I would need to know if the final answer is supposed to be in kJ or in J/K.
Either way, use the Gibb's Formula:
ΔG= ΔH-T<span>ΔS
If the final answer is supposed to be in J/K then plug-in your values to the formula and simply solve.
However, if your final answer is supposed to be in kJ, your first step would be to convert </span>ΔS from J/K into kJ.
This is simply done by dividing the given ΔS by 1000 ----> (-301.2/1000).<span>
(we divide by 1000 because by definition that's what a "kilo" is )
New </span>ΔS value= <span>-0.3012 kJ
Now all you have to do is plug-in all the values into the formula.
</span>ΔG= ΔH-TΔS
ΔG= (-144.6 kJ) - 298K(-0.3012kJ)
= -54.84 kJ
<span>
</span>Since the ΔG is negative, this means that the reaction is spontaneous.
Hope this helps! :)
Bacteria-living; viruses-nonliving
Good luck on your exam
