A Snickers candy bar is placed in a bomb calorimeter and burned to release all its energyThe heat
released increases the temperature of the water in the calorimeter from 14 deg * C to 54 deg * C There
are 5.5 L of water in the calorimeterCalculate how many Calories of energy are in the Snickers candy
barThe specific heat of water is 4.184 j/(e^ -0 C The density of water is 1.00g/ mL
Ans)
To solve this problem, we need to use the formula for calculating the heat released or absorbed in a
calorimeter:
Q= mc ∆T
Where:
Q = heat released or absorbed
M = mass of the substance (in grams)
C = specific heat capacity of the substance (in J/(g°C))
ΔT = change in temperature (in °C)
Explanation:
In this case, we are given that the heat released by burning the Snickers bar increases the temperature
of the water in the calorimeter from 14°C to 54°C, which is a change in temperature of
∆T = 54- 14 = 40°C.
The mass of the water in the calorimeter is given as 5.5 L, and we know that the density of water is 1.00
g/mL. Therefore, the mass of the water is:
M = density × volume
M = 1× 5.5 × 1000
= 5500 g
Next, we need to calculate the heat released by the Snickers bar. We don’t know the mass of the
Snickers bar, but we can use the energy required to raise the temperature of the water in the
calorimeter to calculate the heat released:
Q = 5500 g × 4.184 J/(g°C) × 40°C
Q = 920,480 J
