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
WARRIOR [948]
3 years ago
13

Explain how a cold compress used by

Chemistry
1 answer:
Fynjy0 [20]3 years ago
7 0

Answer: A cold compress used by  athletes is an endothermic reaction.

Explanation:

A pack of cold compress used by athletes contains water that holds another bag or tube inside it which is filled with ammonium nitrate fertilizer.

So, on hitting the cold compress the tube breaks down due to which fertilizer gets mixed with water. This mixture absorbs the heat when placed on the area of body having pain, strain or bump.

As a result, we tend to feel cold at the affected area of our body.

Thus, we can conclude that a cold compress used by  athletes is an endothermic reaction.

You might be interested in
What group is the element NITROGEN in? 1 Group 4<br> 2 Group 5<br> 3 Group 2<br> 4 Group 8
Butoxors [25]

Answer:

r7ñopdyiwriduwyzgpxpo

3 0
3 years ago
Read 2 more answers
Explain surface tension and capillary action
Andreas93 [3]

Adhesion of water to the surface of a material will cause an upward force on the liquid. The surface tension acts to hold the surface intact. Capillary action occurs when the adhesion to the surface material is stronger than the cohesive forces between the water molecules.

4 0
3 years ago
Why is the mesosphere colder than the troposphere
mezya [45]
The mesosphere is the coldest of the atmospheric layers. In fact it is colder than the Polar regions of the Earth cold enough to freeze water vapor into ice clouds. As you increase in altitude, temperature decreases The thermosphere is the layer to which this pattern does not apply.
3 0
3 years ago
Design a synthesis of acetophenone from benzene or toluene. 1275q Part 1 out of 5 Choose the best option for the nucleophile pre
Trava [24]

Answer:

A Fridiel craft catalyst will convert benzene to acetophenone.

Permanganate catalyst can be used to convert toluene to acetophenone.

Explanation:

Benzene can be reduced to acetophenone by the addition of anhydrous aluminium chloride, AlCl₃

The mechanism is as follows:

Benzene + Acetyl choloride → acetophenone

To convert toluene to acetophenone, the following steps are necessary:

  • Oxidation of Toluene to Benzoic acid.

     This is done by refluxing toluene with alkaline potassium permanganate         (KMnO₄+ Na₂CO₃).

  • Benzoic acid is converted to Benzoyl chloride by treating with thioyl chloride and heating at about 80 ⁰C.
  • Benzoyl chloride is treated with methyl lithium to form Acetophenone.
5 0
3 years ago
Burning gas on a stovetop transforms chemical energy into what other types of energy?
svp [43]

<u>Answer:</u>

<em>Burning gas on a stove top transforms chemical energy into thermal energy.</em>  

<u>Explanation:</u>

Cooking food involves in two types of energies. <em>They are chemical energy and thermal energy. </em>

We use gas for a gas stove.Here gas is chemical energy.when we light the stove the fire lits up and here the <em>chemical energy energy is converted into thermal energy.</em>

Breaking and combining of bonds during combustion gives heat and light.This thermal energy heats the vessels and cooks the food through the <em>process of conduction, convection and radiation. </em>

3 0
3 years ago
Other questions:
  • A compound with the molecular formula C10H10O4 produces a 1H NMR spectrum that exhibits only two signals, both singlets. One sig
    15·1 answer
  • Characteristics of matter that cannot be changed are called
    5·1 answer
  • For each element, predict where the "jump " occurs for successive ionization energies. (For example, does the jump occur between
    5·1 answer
  • The density of an object is
    6·1 answer
  • A person's heartbeat is 73 beats per minute. If his heart beats 3.1e9 times in a lifetime, how long does the person live?
    8·1 answer
  • If you were preparing a defined, minimal medium for an aerobic, chemolithotrophic bacterium to grow on, which of the following c
    7·1 answer
  • Calculate the freezing point of a solution containing 5.0 grams of KCl and 550.0 grams of water. The molal-freezing-point-depres
    6·1 answer
  • Solve and round to the correct number of significant figures: 129 ÷ 29.20
    11·1 answer
  • When blood moves from an atrium to a ventricle, it must pass through a __________
    7·2 answers
  • Which one is a Synthesis reaction?​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!