Question

1. calorimetry is

a. a type of reaction
b. the study of measuring the amount of heat released or absorbed along a physical or chemical
c. the process of measuring the temperature of water
d. the study of food calories

1. we can measure the amount of thermal energy that is transferred in a system using

a. the boiling point (delta t)
b. the mass of the object or substance
c. the specific heat of the object or substance
d. the change in temperature that occurs
in a calorimetry experiment, you combusted an entire chocolate - chip muffin under a 100g can that contained water.

• the can contained 100g of water
• the specific heat of water is 4.184 j/g°c
• the change in temperature of the water was 20°c
• assume there was no error in the experiment and all of the energy in the muffin was transferred to the water in the can.

how much energy in joules was in the muffin? use (q = mcdelta t) and show your work.

Explanation:

Step1: Identify the values

We are given that $m = 100g$ (mass of water), $c=4.18J/g^{\circ}C$ (specific - heat of water), and assume a temperature change $\Delta T$. Since the problem doesn't state the final temperature, we'll assume a common - sense scenario where the muffin is hot and let's say the water temperature rises to a reasonable value. If we assume the final temperature of water is $30^{\circ}C$ (initial is $20^{\circ}C$), then $\Delta T=30 - 20=10^{\circ}C$.

Step2: Apply the heat - transfer formula

The formula for heat transfer is $Q = mc\Delta T$. Substitute the values: $m = 100g$, $c = 4.18J/g^{\circ}C$, and $\Delta T = 10^{\circ}C$ into the formula.
$Q=(100g)\times(4.18J/g^{\circ}C)\times(10^{\circ}C)$

Step3: Calculate the result

$Q = 100\times4.18\times10J=4180J$

Answer:

$4180J$