QUESTION 24What happens to the water in a calorimeter when an exothermic reaction occurs in it?a. It absorbs heat, and a rise in temperature is observed.b. It releases heat, and a drop in temperature is observed.c. It absorbs heat, and a drop in temperature is observed.d. It releases heat, and a rise in temperature is observed.

The reaction in which the energy of the product is lower than the reaction and heat energy is…

QUESTION 24 What happens to the water in a calorimeter when an exothermic reaction occurs in it? O a. It absorbs heat, and a rise in temperature is observed. O b.lt releases heat, and a drop in temperature is observed. O. It absorbs heat, and a drop in temperature is observed. O d. It releases heat, and a rise in temperature is observed.

QUESTION 24 What happens to the water in a calorimeter when an exothermic reaction occurs in it? O a. It absorbs heat, and a rise in temperature is observed. O b.lt releases heat, and a drop in temperature is observed. O. It absorbs heat, and a drop in temperature is observed. O d. It releases heat, and a rise in temperature is observed.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

6. An enthalpy change is a. the difference in the kinetic energy of the reactants and the products in a chemical change b. the difference in the potential energy of the reactants and the products in a chemical change c. the difference in enthalpies of the reactants and the products in a chemical change d. the sum of the potential and kinetic energies of the products e. the sum of the potential and kinetic energies of the reactants 7. Which statement concerning the Law of Conservation of Energy is not true? a. it applies to all chemical changes b. it involves all different forms of energy c. it applies to nuclear reactions d. it includes potential energy e. it involves heat content of substances
I don’t get how to answer them?
An engineering student wants to study the heat transfer between a 50 g of a heated block of iron (cFe = 0.449 J/g ⁰C) at 500 ⁰C and 100 g of water (cH2O = 4.184 J/g ⁰C) at 10 ⁰C using a calorimeter. 1. What is the final temperature in Kelvin? A. 308.10 B. 273.18 C. 289.12 D. 273.21 2. What is qH2O in Joules? A. 124725 B. 10439.1 C. 2497.85 D. 116783 3. What is qFe in Joules? A. 124725 B. 10439.1 C. -127425 D. -10439.1
Enthalpy is the a. Heat of combustion at constant pressure b. Heat of formation at constant pressure c. Change in energy of a system at constant pressure d. Energy of a system at constant pressure
How much heat must be added to a 67.42 g sample of water to raise its temperature from 1.2 °C to 97.4 °C? a.21759 J b.-27100 J c.27137 J d.-27137 J
31 What is true about an exothermic reaction? 1. The reaction gives off heat and the surroundings cool down 2. The reaction gives off heat and the surroundings get warmer 3. The reaction absorbs heat and the surroundings get cooler 4.The reaction absorbs heat and the surroundings get warmer
1. Determine if each of the following is an example of an endothermic or exothermic process. a. When solid NaHCO; is dissolved into water in a beaker the beaker becomes very cold. b. Steam condenses on the bathroom mirror.
Indicate whether the reactions below involve a chemical changeor physical change. Identify change in physical state if applicable. Indicate if energy (heat) must be added or removed. Is the reaction endothermic or exothermic?
What is the amount of heat (value of q) when 22.8 g of gold is heated from 20.0℃ to 425℃? The specific heat capacity of gold is Cs,Au = 0.129 J/g℃. Select one: a. 2.94 J b. 405 J c. none of these d. –405 J e. –1.19 x 10^3 J f. –1.07 x 10^3 J g. 1.07 x 10^3 J h. 52.2 J i. 1.19 x 10^3 J j. –52.2 J
time will not stop. swer all questions to the best of your ability. Ek, Question 2 A 100.0-g sample of water has an initial temperature of 25.0°C. The final temperature of the after heating was 27.0°C. How many joules of heat is released by the reaction? (Cwater = 4.18 J/g•°C) O 426J O 5602J O 836J
Which of the following statements about bomb calorimetry is true? Select one: a. The operation of a bomb calorimeter is the same as that of a regular calorimeter. b. The typical reactions performed in bomb calorimeters usually result in small amounts of heat and gaseous products. c. Bomb calorimeters require calibration to ensure accurate results. d. If the amount of heat produced by a reaction in a bomb calorimeter will be too large, then a regular calorimeter like a Styrofoam cup should be used.
When solid calcium hydroxide reacts with hydrochloric acid in water, dissolved calcium chloride precipitate and water are formed. This reaction gives off heat. Find the a. chemical equation b. balanced equation