Answer:
6700.6 BTU
Step-by-step explanation:
First you have to warm the block from -15° F to 32°F, the heat to needed to do this is:
![Q_{1}=mc\Delta T=20lb*0.49\frac{BTU}{lbF} *(32F-(-15F))=460.6BTU](https://tex.z-dn.net/?f=Q_%7B1%7D%3Dmc%5CDelta%20T%3D20lb%2A0.49%5Cfrac%7BBTU%7D%7BlbF%7D%20%2A%2832F-%28-15F%29%29%3D460.6BTU)
After you need to melt the ice. The heat you need is:
![Q_{2}=mL=20lb*144\frac{BTU}{lb}=2880BTU](https://tex.z-dn.net/?f=Q_%7B2%7D%3DmL%3D20lb%2A144%5Cfrac%7BBTU%7D%7Blb%7D%3D2880BTU)
Finally, you need to heat the water from 32° F to 200 ° F, and the heat for this is:
![Q_{3}=mc\Delta T=20lb*1\frac{BTU}{lbF} *(200F-32F)=3360BTU](https://tex.z-dn.net/?f=Q_%7B3%7D%3Dmc%5CDelta%20T%3D20lb%2A1%5Cfrac%7BBTU%7D%7BlbF%7D%20%2A%28200F-32F%29%3D3360BTU)
To have the total heat you used you have to su
and
2nd term: 3+8
= 11
3rd term: 11+8
= 19
4th term: 19+8
= 27
5th term: 27+8
= 35
OR
((n-1)x8)+3
30b+3= s
It would be thirty students times the number of buses, with an addition of 3 students equal to the total number of students when on the field trip.
I hope this helps!
~cupcake
Answer:
Its C
Step-by-step explanation:
if 1 killogram = 1,000 grams then all you will have to do is divide 8,885 by 1,000
which is 8.885