Answer:
I'd say about 8?
Explanation:
if you wanna make them huge make about 6
You have to use the equation q=mcΔT and solve for T(final).
T(final)=(q/mc)+T(initial)
q=the amount of energy absorbed or released (in this case 868J)
m=the mass of the sample (in this case 15.6g)
c= the specific heat capacity of the substance (in this case 2.41 J/g°C)
T(initial)=the initial temperature of the sample (in this case 21.5°C)
When you plug everything in, you should get 44.6°C.
Therefore the final temperature of ethanol is 44.6°C
I hope this helps. Let me know if anything is unclear.
Answer: Rocks can tell paleoclimatologists the different climates that have existed during different geological ages.
Hope this helps!
Answer:
D because excited electrons fall back.....
The second choice, the atomic number plus the number of neutrons equals the atomic mass.