How many calories will it take to raise the temperature of a 36 g gold chain from 20°C to 110°C?
heat=mass*specific heat capacity*changeintem
changeintemp=90C
specificheatcapacitygold=0.129 J/gC
but one Joule=0.239 calorie , so
specificheat capacity gold= = 0.0308 cal/gC
mass=36g
do the math.
My answer is 1.1088 because the specific heat capacity gold times the mass, is that the right answer.
0.0308 times the mass of 36 g
No, that isn't correct. What did you do with the change in temperature of 90 C?
Ok, I tried 0.0308 times the mass of 36g divided by 90C, I got .0516, is that correct? Not sure what to do? Thanks
Multiply by change in Temp. * means times. I get near 100 Joules
137, I just multplied
0.0308 x 36 x 90 = ? calories
I don't think that's 137.
I got 99.792, then rounded to 99.8
Got it! Thanks
To calculate the number of calories required to raise the temperature of a substance, you can use the specific heat capacity. The specific heat capacity is defined as the amount of heat energy required to raise the temperature of a substance by a certain amount.
Firstly, you need to find the specific heat capacity of gold. The specific heat capacity of gold is around 0.128 calories/gram°C or 0.128 cal/g°C.
To calculate the energy required to raise the temperature of the gold chain, you can use the formula:
Energy = mass × specific heat capacity × temperature change
Given:
- Mass of the gold chain = 36 grams
- Initial temperature = 20°C
- Final temperature = 110°C
Let's calculate it step by step:
1. Calculate the temperature change:
Temperature change = Final temperature - Initial temperature
Temperature change = 110°C - 20°C
Temperature change = 90°C
2. Calculate the energy required:
Energy = mass × specific heat capacity × temperature change
Energy = 36 g × 0.128 cal/g°C × 90°C
Energy ≈ 414.72 calories
Therefore, it would take approximately 414.72 calories to raise the temperature of a 36 g gold chain from 20°C to 110°C.