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
sasho [114]
2 years ago
6

Which event is an example of an endothermic reaction?.

Chemistry
1 answer:
g100num [7]2 years ago
7 0
For a reaction to be endothermic we have a process where heat is absorbed from a product and the end result is the product being colder than it originally was.

An event that can be a good practical example is using an ice pack on your arm. Your arm is warm before an ice pack is applied. After you apply an ice pack and leave it there for a while and then take it off, the site where the ice pack was would be colder than it was before the ice pack. Hope this helps!
You might be interested in
why are isotopes that have relatively short half lives the only ones used in medical diagnostic tests
Anettt [7]
 Hence, it is less preferrable to choose an isotope to enter your body, which will emit radioactivity for a long time, so we tend to choose isotopes, the radioactivity of which ceases quickly, so that the least possible amount of damage is caused to the cells
3 0
3 years ago
Read 2 more answers
In contracting skeletal muscle, a sudden elevation of cytosolic Ca2 concentration will result in: Inactivation of phosphorylase
skad [1K]

Answer:

ACTIVATION OF PHOSPHORYLASE KINASE AND ALLOSTERICALLY ACTIVATION OF PHOSPHORYLASE KINASE B

Explanation:

In a contracting skeletal muscle, there is a rapid need of ATP by the muscle cell. The energy need is obtained by the degradation of glycogen into glucose which then enters glycolysis.  Muscle contraction causes muscle depolarization in which there is the rapid influx of calcium ions from the sarcoplasmic reticulum into the sacroplasm of the myocytes. This in turn causes the binding of calcium ion with calmodulin which thenb activates phosphorylase kinase from which it  allosterically activate the b form of the enzyme needed for the conversion of glycogen to glucose. The other options do not occur as a result of increase in cytolic calcium concentration.

4 0
3 years ago
Naturally occurring boron has an atomic mass of 10.810 amu consists of two isotopes. One of those isotopes is 10B with an isotop
miskamm [114]

Answer:

boron has an atomic mass of 10.810 amu consists of two isotopes.

4 0
3 years ago
Read 2 more answers
Arrange ZN HG CU AU metals in order of decreasing activity with the most active first
Andrej [43]
  • AU ZN CU HG

Explanation:

hope it helps you

6 0
3 years ago
Which of the following causes clouds to form? (1 point)
elena-s [515]
The answer is B, early in the morning water covered areas (lakes,ponds,puddles,etc.) will vaporize a little bit because of the heat from the sun and it will continue all day, vapors rise towards the atmosphere and since it's a lot cooler there it will condense into a cloud which is full of tiny frozen water particles. Hope this helps <span />
6 0
3 years ago
Read 2 more answers
Other questions:
  • How many electrons are transferred between the cation and anion to form the ionic bond in one formula unit of each compound? (1
    6·1 answer
  • What shape and bond angles would this molecule have in three dimensions?
    9·2 answers
  • Both Earth and the planet Venus have a large amount of water vapor in the atmosphere, and have extensive volcanic activity throu
    15·2 answers
  • In a 1.143E+2 g sample of iron(III) oxide, how many grams of iron are present? Your answer should have the appropriate number of
    12·1 answer
  • What is the Symbol for Barium?
    11·1 answer
  • Look at the four images<br>Which image represents a tropical rainy climate?<br>1 2 3 4​
    15·2 answers
  • During a chemical reaction, the amount of energy (2 points)
    8·1 answer
  • He equation for the dissociation of pyridine is
    15·1 answer
  • n-Butane fuel (C4H10) is burned with the stoichiometric amount of air. Determine the mass fraction of each product. Also, calcul
    7·1 answer
  • Can grasshoppers fly?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!