I need help with homework questions please?

How much heat energy is required to raise the temperature of 5 kilograms of coal from 20掳C to 220掳C?



A. 314 J

B. 6,573 J

C. 1,314,718 J

D. 4,187,000 J





10. One degree Celsius indicates the same temperature change as



A. one degree Fahrenheit.

B. one kelvin.

C. 5/9 degree Fahrenheit.

D. 9/5 kelvin.





11. A quantity of a gas has an absolute pressure of 400 kPa and an absolute temperature of 110 degrees kelvin. When the temperature of the gas is raised to 235 degrees kelvin, what is the new pressure of the gas? (Assume that there's no change in volume.)



A. 1.702 kPa

B. 3.636 kPa

C. 510 kPa

D. 854.46 kPaI need help with homework questions please?
q1...depends on the specific heat capacity of coal...formula is



Q=mc0

where Q= heat energy required

m= mass of substance (covert it in kilos)

c=specific heat energy of coal

0=temp change (this case 200)





Q10.answer is simple B! because kelvin may start at 273c but 1k=1 c!!



Q11 apply gas law here..sorry dont have calculator right now

P/T is constant so

400/110=x/ 345



here u goI need help with homework questions please?
Those are test questions, lol.I need help with homework questions please?
*sigh* We are NOT here to do your homework.