Specific Heat Problems

Slides:

Advertisements

Similar presentations

Intro to thermochem - Discuss HEAT v. TEMPERATURE

Advertisements

CHEM 1011 Calorimetry: The Determination of the Specific Heat of a Metal.

CHEMISTRY 161 Chapter 6

 Energy is transferred ◦ Exothermic – heat is released  Heat exits ◦ Endothermic – heat is required or absorbed by reaction  Measure energy in Joules.

How many Joules of energy are required to raise the temperature of 75 g of water from 20.0 o C to 70.0 o C? Heat =75 g x 50.0 o C x 4.18 J/g o C Heat=

Determining the Molar Heat of Combustion for Paraffin

EQ: Describe the parts and each part’s function in a calorimeter?

Thermochemical Equations & Calorimetry

Specific Heat. Names Specific Heat Capacity Specific Heat Heat Capacity.

Heat Problems 1.Using calories, calculate how much heat 32.0 g of water absorbs when it is heated from 25.0 o C to 80.0 o C. How many joules is this?

Calorimetry C ontents: Basic Concept Example Whiteboards Bomb Calorimeters.

Solutions Calculations. Questions 1.What mass of NaOH is needed to make 350 mL of 0.45 mol/L NaOH solution? 2.What is the molarity if 25 g of KClO 3 is.

Calculating Heat. Specific Heat Amount of heat energy needed to raise the temp of 1 ml of a substance 1°C For water the specific heat is 4.19 J/g °C,

1 Copyright © 2008 by Pearson Education, Inc. Publishing as Benjamin Cummings Chapter 3 Matter and Energy 3.5 Specific Heat.

Measuring Enthalpy Changes (Calorimetry) Practical Working and Solutions.

Written Final Review Titration and Calorimetry. Titration 1. Use the data below to answer the following questions: 2.8 M HNO 3 NaOH

Enthalpy Defining the term  Enthalpy Is defined as the heat content contained by a substance. The word is derived from.

1. The universe is made up of: The system – the thing that you are studying The surroundings- everything else 2.

Calorimetry. Since we cannot know the exact enthalpy of the reactants and products, we measure  H through calorimetry, the measurement of heat flow.

Enthalpy (ΔH). Calorimetry the measurement of heat flow in/out of a system performed in a calorimeter the heat released by the system is equal to the.

Determining the enthalpy of a reaction mL of mol L –1 AgNO 3 solution is mixed with 25.0 mL of mol L –1 NaCl solution in a styrofoam.

Everyday Calorimetry. whenever we heat water, its like using a calorimeter calorimeters are used to compare quantities of different fuels that burn to.

E. Calorimetry q = m C  T q = heat or enthalpy J m = mass g C = specific heat J/g°C  T = temperature change °C Note – these problems could also be done.

READING for Thursday: 7.3 – 7.4 READING for Thursday: 7.3 – 7.4 HOMEWORK – DUE TUESDAY 10/20/15 HOMEWORK – DUE TUESDAY 10/20/15 HW-BW 7.1 (Bookwork) CH.

Specific Heat Capacity Weather Unit – Science 10.

Thermal Energy. Temperature & Heat Temperature is related to the average kinetic energy of the particles in a substance.

Warm Up What do we use to measure temperature? 2.What is the difference between heat and temperature? 3.True or false: Heat is energy and energy.

Specific Heat & Phase Changes. Specific Heat ____________ (c) – the amount of heat required to raise the temperature of 1 g of a substance 1 °C The units.

Calorimetry College Chemistry. 6. Specific Heat a. Some things heat up or cool down faster than others. Land heats up and cools down faster than water.

1. A 322 g sample of lead (specific heat = J/g o C) is placed into 264 g of water at 25 o C. If the system's final temperature is 46 o C, what was.

Challenge Problem If the density of an alloy of Al and Cd is 6.08g/cm 3, what is the % by mass and the % by volume of Al? The density of Al=2.70g/cm 3.

SPECIFIC HEAT CAPACITY Thermal Energy Transfer. H EAT C APACITY Explain the following diagram.

Heat Exchange. HOW IS THERMAL ENERGY TRANSFERRED? 3 MECHANISMS: CONDUCTION CONDUCTION CONVECTION CONVECTION RADIATION RADIATION.

Specific Heat Q = m c ΔT.

Specific Heat Capacity Every substance has it’s own specific heat because it has a different arrangement of atoms SubstanceSpecific Heat (J/g°C) Water4.18.

Specific Heat Capacity Or the amount of energy needed to heat substances up.

Heat energy is measured in units called joules or calories. 1 calorie is the amount of heat energy needed to raise the temperature of 1.0 g (mL) of water.

Energy Potential energy- energy of position or composition. Potential energy- energy of position or composition. Kinetic energy- energy of motion Kinetic.

Chapter 3 Lecture Basic Chemistry Fourth Edition Chapter 3 Matter and Energy 3.5 Specific Heat Learning Goal Calculate specific heat. © 2014 Pearson Education,

2.2 c)Thermal Capacity By Rishabh Poddar. Thermal Capacity  It is the amount of energy needed to heat substances.  It is denoted by a “C”

 Different substances require different amounts of heat to change their temperature.  Objects that require more energy have a high heat capacity like.

WS: Calorimetry Problems

CHM 101/102 Laboratory Manual Calorimetry. CHM 101/102 Laboratory Manual Calorimetry Background Background  The thermal energy (q) transferred when an.

Question 49 The combustion of .1584g benzoic acid increases the temperature of a bomb calorimeter by 2.54°C. Calculate the heat capacity of this calorimeter.

Quantifying Heat and Work, and Enthalpy

SPECIFIC HEAT OF A METAL

Lecture 5.3 Specific Heat.

Classifying Matter, Energy, Properties & Changes

Heat Energy: Heat (thermal) energy is simply a type of energy

Specific Heat IB1 Chemistry

Specific Heat Capacity

Specific Heat Problems

Hello! (January 10th) Pre-lab in lab books out, please!

Chemical Systems & Heat

Heat Capacity and Specific Heat

Quantifying Heat and Work, and Enthalpy

Specific Heat Capacity

Energy Measuring Heat Calorimetry

Look at these two nutrition labels

Calorimetry Thermochemistry pt2.

qsurroundings = -qsystem

Chapter 2 Energy and Matter

qsurroundings = -qsystem

Happy late bday, Matthew (Sunday)

Calorimetry Conservation of thermal energy: Final Temperature: m1 m2

To find the shc of water by the method of mixtures

Experiment to find the specific latent heat of fusion of ice

ENTHALPY OF COMBUSTION ΔHc

What is the specific heat capacity of the metal?

Presentation transcript:

Specific Heat Problems Unit 3 Specific Heat Problems

A piece of copper with a mass of 23. 8 g is heated to 100 A piece of copper with a mass of 23.8 g is heated to 100.00°C and dropped into 50.0 mL of water at 24.0 °C. The water in the calorimeter rises to 35.40 °C. 23.8 g 100.00°C 50.0 mL 24.0°C 35.40°C

Calculate ΔT of the water Calculate ΔT of the copper Calculate ΔE of the water Calculate ΔE of the copper (-heat lost = heat gained) Calculate c of the copper Calculate heat capacity of copper =Specific heat x molar mass (J/mol°C)