1. PROBLEM SOLVING: Solve the problems below using the step-by-step procedure that was previously taught in this module. (4 points) 7-10. Calculate the energy required to increase the temperature of 20g of water from 200C to 100 OC. Given: Formula: Solution Answer:
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Verified answer
Answer:
q= 6,688 J
Explanation:
For calculating the quantity of thermal energy needed to reach the asked temp. is q=mcΔT.
q= ?
"amount of energy"
m = 20g
"mass being heated up in grams"
c= 4.18J/g/K
" specific heat capacity of water "
ΔT= 80k
" change of temp."
from 20 °C to 100 °C meaning the change is 80°C = 80K
now we would input all the given info.
q=mcΔT
q=20g x 4.18J/g/K x 80K
* cross out g and K as it has similar symbol to the given heat capacity of water
q=20 x 4.18J x 80
* now we would only have J in the problem. Continue multiplication normally.
q= 6,688 J
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