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
Grace [21]
3 years ago
5

Help I'm giving you a lot of points and do not put random or crazy stuff the real question

Chemistry
1 answer:
dybincka [34]3 years ago
6 0

Answer:

Endothermic

Explanation:

Because Endothermic is cold and exothermic is hot and if you are using an ice pack it would be Endothermic and if you were using something that was hot it would be exothermic

You might be interested in
What information does the percent composition of an atom in a molecule
max2010maxim [7]

C.

This is basically the definition of percent composition which is how much mass a element contributes to a specific molecule.

7 0
3 years ago
Which isotope in each pair is more stable? Why?(d) ¹⁴₇N or ¹⁸₇N
quester [9]

<u>¹⁴₇N</u><u> </u>is the more stable isotope

<h3>Briefly explained</h3>

We have ¹⁴₇N which has a neutron to proton ratio of one, and we look at ¹⁸₇N which has a neutron to proton ratio of 1.57 Again, you look at table 24 to and you see the atomic number of seven and there is really no stable isotope. It has any more than 10 neutrons.

When we have eight, protons will go down seven protons. There's really nothing stable that has more than maybe eight neutrons. So the fact that we have 11 neutrons with ¹⁸₇N suggests that this is very unstable and

¹⁴₇N is the stable isotope of the pair.

<h3>Stable and Unstable Nuclei</h3>

An atom is electrically neutral. It contains an equal number of positively charged protons and negatively charged electrons and their charges balance. The nucleus however contains only positively charged protons which are closely packed together in a very small volume (remember neutrons have no charge).

From the laws of physics (Coulomb’s Law) one would expect that the protons being of the same charge and so close together would exert strong repulsive forces on each other. The combined gravitational force from the protons and neutrons in a nucleus is insignificant as an attractive force because their masses are so tiny.

This implies there must be an additional attractive force similar in size to the electrostatic repulsion which holds the nucleus together.

Learn more about stable and unstable nuclei

brainly.com/question/24748035

#SPJ4

6 0
1 year ago
Which substance has a chemical formula with the same ratio of metal ions to nonmetal ions as in potassium sulfide?
pav-90 [236]
Answer=1

Potassium Sulfide= K2S (two metals, one non metal)


Sodium Oxide=Na2O (two metals. one nonmetal)

Sodium Chloride=NaCl (one metal, one nonmetal)

Magnesium Oxide=MgO (one metal, one nonmetal)

Magnesium Chloride=MgCl2 (one metal, two nonmetals)
6 0
3 years ago
Read 2 more answers
Which of the following is the electron configuration for an electrically neutral atom of beryllium(Be)?
masya89 [10]
1s^2 2s^2 <span>is the electron configuration for an electrically neutral atom of beryllium(Be).</span>
5 0
3 years ago
Read 2 more answers
A common anesthetic in dentistry known as nitronox consists of a mixture of dinitrogen oxide, n2o, and oxygen gas, o2, which is
Nesterboy [21]

Anesthetic in dentistry  consists of a mixture of dinitrogen oxide (N₂O) and oxygen gas (O₂), which is administered through an inhaler over the nose. Total pressure of the mixture (P_{total}) is sum of partial pressure of N₂O (p_{N_{2}O }) and partial pressure of O₂, (p_{O_{2} }).

P_{total}=p_{N_{2}O } + p_{O_{2} }

P_{total}= 740 mmHg, p_{O_{2} }=370 mmHg

So, p_{N_{2}O }= (740-370) mmHg= 370 mmHg=370 torr

Hence, partial pressure of N₂O is 370 torr.

As, 1mmHg= 1 torr.


3 0
3 years ago
Other questions:
  • Identify the Bronsted-Lowry acid, the Bronsted-Lowry base, the conjugate acid and the conjugate base for each of the following r
    6·1 answer
  • Do atoms lose energy during evaporation
    7·1 answer
  • Which of the following represents a physical change?
    11·1 answer
  • How many molecules is 0.360 mole of water?
    5·1 answer
  • Why is gold foil used on sculptures
    14·2 answers
  • Sketch the titration curve for the titration of a generic weak base B with a strong acid. The titration reaction is
    6·1 answer
  • Will Upvote!!!<br> Determine the correct IUPAC name for this branched chain hydrocarbon.
    11·1 answer
  • Please help me please
    12·1 answer
  • PLEASE HELP WILL GIVE BRAINLIEST
    5·1 answer
  • Based on the information below, both Polaris and Sirius are much hotter than the Sun. However, on Earth, we feel the heat from t
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!