Purchase Solution

# heat and energy

Not what you're looking for?

Please see the attached file for the fully formatted problem(s).

Heat, Energy, and Changes of State

Part A
How much energy in joules would be absorbed by 3.0 L of liquid oxygen as it vaporized? The density of liquid oxygen at its boiling point is 1.14 kg/L , and its heat of vaporization is 213 kJ/kL .

Part B
Some velomobile seats have been designed to hold ice packs inside their cushions. If you started a ride with ice packs that held 1400 g of frozen water at 0.0 degrees C , and the temperature of the water at the end of the ride was 32 C , how many calories of heat energy were absorbed?
Water's heat of fusion is 80 cal/g , and its specific heat is 1.0 .

Part C
A canister is filled with 390 g of ice and 100 g of liquid water, both at 0.0 C. The canister is placed in an oven until all the H2O has boiled off and the canister is empty. How much energy in calories was absorbed?
Water's heat of fusion is 80 cal/g , its specific heat is 1.0 , and its heat of vaporization is 540 cal/g.

Energy Conversions

Part A: Duncan has prepared ramen noodles so many times he does not need to measure the water carefully, but he knows that it takes 3.64×104 to heat 1.00 of water from room temperature to boiling. If 0.534 of room-temperature water is heating on the stove, how many kilojoules of heat energy have been absorbed by the water at the moment it begins to boil?

Specific Heat Calculations
Part B: Duncan takes a break from studying and goes to the gym to swim laps. If he uses when he swims, how long will he have to swim to use 4.75×105 ?

Part A: How much heat energy is required to raise the temperature of 0.363 of copper from 23.0 to 60.0 ? The specific heat of copper is 0.0920 .

Part B: If 125 of heat is applied to a 60.0- piece of copper at 25.0 , what will the final temperature be? The specific heat of copper is 0.0920 .
Express the final temperature numerically in degrees Celsius.

Problem 6.6

Part A: 3.1 kcal to cal

Part B: 525 J to kJ

Part C: 6550 cal to kJ

Part D: 6.50 kcal to J

##### Solution Summary

The solution is composed to detailed explainations to heat and energy related questions.

##### 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.

##### Match Elements with their Symbols

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

##### Thermochemistry

The quiz helps in revising basic concepts about thermochemistry.

##### 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.