Question

Calculate the calorie: you have 10 g of water in your bomb calorimeter, and you heat 50 g of a sandwich, finding that it raised the temperature of the water by 45 degrees Celsius. How many calories does the 50 g sandwich provide?

Answer 1

To calculate the number of calories provided by the 50g sandwich, you can use the formula: Calories = (mass of water) x (change in temperature of water) x (specific heat capacity of water). Therefore, the 50g sandwich provides approximately 13.34 kilocalories.

Step-by-step explanation:

To calculate the number of calories provided by the 50g sandwich, we can use the formula:

Calories = (mass of water) × (change in temperature of water) × (specific heat capacity of water)

First, convert the change in temperature from Celsius to Kelvin by adding 273.15: 45 + 273.15 = 318.15 K. Then, substitute the values into the formula:

Calories = (10g) × (318.15 K) × (4.18 J/g·K) = 13335 J = 13.34 kJ

Therefore, the 50g sandwich provides approximately 13.34 kilocalories.