Solve the following problems;How many calories of heat are needed to raise the temperature of 75g of water from 20 °Cto 80 °C.1.2.3.How much heat is liberated when 50g of water is cooled from 100 ° C to 20 °C5.One hundred grams of aluminum at 100° C is mixed with 100 g of water at 10° C. What isthe final temperature of the mixture ?4.A block of metal of mass 1000g is heated to 100 ° C.It is then immersed in 100g of water at0°C in a calorimeter of mass 50 g and specific heat is 0.2. If the final temperature of theMixture is 70 ° C, What is the specific heat of the metal.?Four hundred grams of aluminum at 100 ° C is dropped into 100 g of water at 20°Ccontained in a copper calorimeter of mass 80 g. What is the final temperature of the mixture?6. If 5 kg of water freezes at 0° C, how many kilocalories of heat are liberated ?7. How many calories of heat are needed to vaporize 500g of water at 100 ° C ?8. How many calories of heat are liberated when 50 g of steam is converted to ice at 0 °C ?

1- mass of water, m=75 g Initial temprature, Ti=20 °C Final temprature, Tf=80 °C To determine heat…

Answered: 1. How many calories of heat are needed…

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1. How many calories of heat are needed to raise the temperature of 75g of water from 20 ° C to 80 °C.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

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Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Calorimetry

Measuring the heat transferred during chemical reactions or other physical processes is known as calorimetry. It comes under the branch of thermochemistry.

Question

Solve the following problems;
How many calories of heat are needed to raise the temperature of 75g of water from 20 °C
to 80 °C.
1.
2.
3.
How much heat is liberated when 50g of water is cooled from 100 ° C to 20 °C
5.
One hundred grams of aluminum at 100° C is mixed with 100 g of water at 10° C. What is
the final temperature of the mixture ?
4.
A block of metal of mass 1000g is heated to 100 ° C.It is then immersed in 100g of water at
0°C in a calorimeter of mass 50 g and specific heat is 0.2. If the final temperature of the
Mixture is 70 ° C, What is the specific heat of the metal.?
Four hundred grams of aluminum at 100 ° C is dropped into 100 g of water at 20°C
contained in a copper calorimeter of mass 80 g. What is the final temperature of the mixture?
6. If 5 kg of water freezes at 0° C, how many kilocalories of heat are liberated ?
7. How many calories of heat are needed to vaporize 500g of water at 100 ° C ?
8. How many calories of heat are liberated when 50 g of steam is converted to ice at 0 °C ?

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