When you crush a first-aid pack for an injured athlete and the pack gets cold, which of the following is true?
a. A physical change has occurred, with energy being absorbed.
b. A chemical change has occurred, with energy being given off.
c. A physical change has occurred, with energy being given off.
d. A chemical change has occurred, with energy being absorbed.
Answers (1)
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “When you crush a first-aid pack for an injured athlete and the pack gets cold, which of the following is true? a. A physical change has ...” in 📗 Chemistry if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
What is the concentration (M) of sodium ions in 4.57 L of a 0.398 M Na3PO4 solution?
Answers (1)
A persn uses 750 kcal on a long hike. Calculate the energy used in both units: a. joules b. kilojoules
Answers (1)
Electron configuration of Zn+2
Answers (1)
A nuclide of Superscript 64 subscript 29 upper C u. absorbs a positron. Which is the resulting atom? Superscript 65 subscript 29 upper C u. Superscript 63 subscript 29 upper C u. Superscript 64 subscript 28 upper N i.
Answers (1)
rank the following list of aqueous solutions and solvents according to decreasing vapor pressure the substance with the higher vapor pressure should be placed at top 0.10 M glucose pure water 0.050 M urea 0.20 M sucrose
Answers (1)
New Questions in Chemistry
A penny has a mass of 2.50g and the moon has a mass of 7.35 X 10^22 Use this information to answer the questions below. Be sure your answers have the correct number of significant digits.
Answers (1)
If a car tire has a diameter of 3232 inches, what is the approximate circumference of the tire?
Answers (1)
9) Bettina spoke into a microphone during the school play to increase the sound of her voice so the audience could hear her speak.
Answers (1)
Explain what happens to the average kinetic energy thermal energy and temperature of a substance when the particles in the substance slows down
Answers (2)
Which of the following could be used to describe the rate of a reaction? change in time/change in concentration change in mass/change in concentration change in concentration/change in time change in concentration/change in mass
Answers (1)