Purchase Solution

# Heat Conversion of Ice to Water

Not what you're looking for?

A sample of water weighing 125g releases 10.0 kcal of heat as it cools from 80.5ºC to 0ºC. It then releases another 10.0 kcal of heat as it freezes at this temperature. How many kcal of heat are needed in order to convert 125g of ice at 0º to water at 80.5ºC?

##### Solution Summary

The solution outlines the conversion between ice and water, with heat as the prime factor. With the parameters established, the specific amount of kcal of heats are stated as the amount needed to convert ice to water.

##### Solution Preview

We know that heat released or absorbed is given by q = m C dT, where m is the mass C is the specific heat and dT is the change in temperature.
Heat is released when water at 80.5 deg C cools to 0 deg C. This value is q1 = 10 kCal. The amount of heat required per unit mass of a substance at freezing point (constant), and under 1 atmosphere pressure to convert it from the liquid to the solid state, is called Latent Heat of Freezing.
q = m ...

##### Match Elements with their Symbols

Elements are provided: choose the matching one- or two-letter symbol for each element.

##### Functional groups in Organic Chemistry

You will be tested on the names of functional groups in Organic Chemistry. It is very important to know the functional groups to understand Organic reactions.

##### Thermochemistry

The quiz helps in revising basic concepts about thermochemistry.

##### Organic Chemistry Naming: Alkanes

This is a quiz which is designed to assist students with learning the nomenclature used to identify organic compounds. This quiz focuses on the organic compounds called Alkanes.