1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Dmitry [639]
3 years ago
13

When an athlete gets hurt they apply sometimes an instant cold pack to the injury. The instant cold pack works by mixing two che

micals that create a chemical reaction. What evidence is there that a chemical reaction is taking place in the cold pack?
Chemistry
1 answer:
NeX [460]3 years ago
3 0

Answer:

The evidence showing that there is a chemical reaction taking place is the instantaneous temperature drop once the cold pack is shaken.

Explanation:

When an athlete applies a cold pack to the injury, they shake it before, mixing the water and <em>ammonium-nitrate fertilizer</em> inside the cold pack. This mixing is an endothermic reaction, which means it absorbs heat. In turn, the temperature falls to 35 F for around 10 minutes.

You might be interested in
If a scientist knows the relative age of a fossil, he can also know
IrinaVladis [17]
I feel like it's the all the above but if it had to be one choice then I think it's the type of climate from which it came.
4 0
3 years ago
Read 2 more answers
You have a rock with a mass of 10 g in a density of 30. g/ml. What is the volume?
Lerok [7]
10/30= 0.3 repeating
5 0
4 years ago
If moving objects have kinetic energy, do moving atoms kinetic energy?
podryga [215]

Answer:

yes, if they were in rest they would have potential energy

Explanation:

7 0
3 years ago
1.Outline the results of the Cathode ray tube?
kobusy [5.1K]

Answer:

this showed that the cathode rays traveled in straight line

8 0
3 years ago
Compare how entropy changes for the following two systems:
DanielleElmas [232]

Answer:

Explanation:

Entropy is concept which the describes the state of randomness or disorderliness of particles of a system. The entropic level depends on two important factors:

1. Temperature

2. Physical state of matter

For system A, in going from solid to liquid by dissolution in water the entropy increases. Solids are the most ordered substances followed by liquids. Gases are the most random.

For system B, moving from gas to a condensed state, there is a huge decrease in randomness of the system. The system tends towards more orderliness as the condensing forces changes a gas to a liquid. For this system, entropy reduces.

5 0
4 years ago
Read 2 more answers
Other questions:
  • What is the total number of molecules in 11.2 liters of N2 gas at STP?
    15·1 answer
  • Which statement best explains how isotopes can have different masses and still be the same element?
    12·1 answer
  • Ionic bonds are formed between metal and nonmetal elements. Potassium has only one valence electron and it is stripped away in t
    12·2 answers
  • If an ion has a charge of 3+ the ion must have..?
    10·1 answer
  • The subatomic particles that can form chemical bonds with subatomic particles
    5·1 answer
  • A weather balloon has a maximum volume of 6.25 x 10^3 L. The balloon contains 510. L of helium gas at a pressure of 0.882 atm. W
    15·1 answer
  • A 5.0 g block of steel has 500 J of heat added to it. If the specific heat capacity of steel is 0.466 J/g What is the temperatur
    14·1 answer
  • If the amount of energy required to break bonds in the reactants is more than the amount of energy released in forming bonds in
    6·1 answer
  • How many moles are in 8.7 x 104 atoms of oxygen?
    12·1 answer
  • in the reaction of magnesium metal with hydrochloric acid, how do you determine when the magnesium metal has reacted completely?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!