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
Murrr4er [49]
2 years ago
5

What type of reaction occurs in a hand warmer? Exothermic Endothermic

Chemistry
1 answer:
storchak [24]2 years ago
8 0

Answer:

The reaction is exothermic.

Explanation:

You might be interested in
Why is a thermos considered a (mostly) closed system? Question 3 options: different types of liquids stay hot thermoses come in
cestrela7 [59]

Answer:

Different types of hot or cold items can be stored in a thermos and power cannot enter or exit the system when the thermos lid is tightly closed

Explanation:

Closed systems are those that do not interact or do not exchange energy with the environment that surrounds them, that is why internal temperatures and conditions are maintained.

The human body is an open system, that is, it would be the opposite of the thermos since we constantly exchange energy with the environment through sweating, emission of gases, urine, feces, and the ingestion of food.

Thermoses are systems specially created to maintain a medium, it will be maintained if its lid is hermetically closed to prevent heat leakage or entry in situations of cold fluids.

4 0
3 years ago
The compound ncl3 is nitrogen trichloride, but alcl3 is simply aluminum chloride. why
AveGali [126]
The answer to this question would be:
NCl3 is a molecular compound (two or more nonmetals), and therefore in its name prefixes indicate the number of each type of atom. so NCl3 is nitrogen trichloride<span>.
</span><span>The compound AlCl3 is an ionic compound (metal and nonmetal), and therefore does not require prefixes. so AlCl3 is aluminum chloride.
</span><span>
Both of nitrogen and chlorine is nonmetal, but aluminum is metal. Metal with nonmetal will make an ionic compound that doesn't need prefixes.</span>
5 0
3 years ago
Read 2 more answers
In which set do all elements tend to form anions in binary ionic compounds? li, na, k n, o, i c, s, pb k, fe, br?
pav-90 [236]

Atoms or molecule after gaining of electron possesses negative charge and is known as anion.

For the given sets:

  • Li, Na, K

The given elements are alkali metals and have tendency to lose electrons easily and form cations.

  • N, O, I

The given elements are non-metals and are electronegative. So, they gain electrons easily and form anion.

  • C, S, Pb

Carbon has tendency to form bond by sharing of electrons, Sulfur has tendency to gain electrons and form anion whereas Lead has tendency to lose electron.

  • K, Fe, Br

Potassium and Iron has tendency to lose electron and form cation whereas Bromine has tendency to gain electron to form anion.

Hence, from the given sets, all elements of set: N, O, I have tendency to form anions in binary ionic compounds.

8 0
3 years ago
Read 2 more answers
The surface of what he can act like a sort of skin due to a Liquid called
PIT_PIT [208]
 A Liquid called Surface Tension. 
8 0
3 years ago
Which ones are false? need help please.
kirill [66]

Answer:

A.) False B.)False C.) True D.) False E.) False

Explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • How do you calculate net force?
    6·1 answer
  • common state of matter on earth for tin ,scientist related to tin and color,texture,hardness,smell of tin please help really imp
    11·1 answer
  • Ants live on acacia trees in South America. The ants feed on sugars secreted by the trees. The trees provide room for the ants t
    5·1 answer
  • Indicate the type of solute-solvent interaction that should be most important in the solution:HCl in acetonitrile (CH3CN)A. disp
    12·2 answers
  • Campare how the structure and function of a plant is similar to the human body
    13·1 answer
  • Calculate the concentration of acetic acid and acetate ion in a 0.2 M acetate buffer at pH 5. The p K a of acetic acid is 4.76
    13·1 answer
  • If a number is lass than 1 is the exponent positive or negative?
    12·2 answers
  • Scientists who are investigating what has happened over the years to the people who were exposed to radiation during the 1986 Ch
    13·1 answer
  • (NH4)3P is it Ionic or Molecular??​
    12·1 answer
  • The bacteria are known to be prokaryotes. Prokaryote means
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!