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
Margaret [11]
3 years ago
14

Your teacher directs you to combine two liquid substances into a flask. after you combine them, you notice that the flask feels

cold when you touch it. which if the following best depicts what happened?
A: an endothermic reaction has taken place

B: an exothermic reaction has taken place

C: the liquid has reached its freezing point

D: you have made an error because the flask should have gotten warmer, not colder
Chemistry
1 answer:
adelina 88 [10]3 years ago
3 0

Answer : The correct option is (A).

Explanation :

  • Endothermic reaction : When two liquids are combine into a flask, then the flask feels cold when we touch it because the system absorbed heat from the surrounding.

In general, endothermic process absorbs heat and cool the surrounding.

  • Exothermic reaction : When two liquids are combine into a flask, then the flask feels hot when we touch it because the system released heat into the surrounding.

In general, exothermic process releases heat and rise the temperature of surrounding.

You might be interested in
What are atoms made of
fomenos

Atoms are made of subatomic particles known as protons, neutrons, and electrons.

(Small bonus: in order to mimic the technology of replicators like in star trek, you need to mess with protons, neutrons, and electrons) (pls dont report)

8 0
3 years ago
What is being cycled??
swat32
Water is constantly being cycled between the atmosphere, the ocean and land. This cycling is a very important process that helps sustain life on Earth. As the water evaporates, vapors rise, and condense into clouds. The clouds move over land, and precipitation falls in the form of rain, ice, or snow.
6 0
3 years ago
The combustion of hydrogen and oxygen is commonly used to
posledela

Answer:

6.66 mol

Explanation:

(atm x L) ÷  (0.0821 x K)

(0.875 x 250) ÷  (0.0821 x 400)

=6.66108

5 0
3 years ago
Which of the following would have the largest amount of mass?
Elodia [21]

Answer:

1 kg

Explanation:

prefix nano means 10^-9

kilo 10^3

mili 10^-3

centi 10^-2

the largest amount is 1 kg

7 0
3 years ago
Read 2 more answers
What is the name of the gas law relating pressure and volume at a<br> constant temperature?
pochemuha

Answer:

Charles Law

Explanation:

Charles's law (also known as the law of volumes) is an experimental gas law that describes how gases tend to expand when heated. A modern statement of Charles's law is: This relationship of direct proportion can be written as: V∝T

5 0
3 years ago
Other questions:
  • What are the two processes underlying this image that turn peat into coal
    15·2 answers
  • Suppose you start with 1.80 g of mgco3·5h2o, after complete dehydration how many grams of the sample do you have remaining?
    9·1 answer
  • List the three components of traditional cell theory.
    5·2 answers
  • Comparing mitosis and meiosis can you help anyone
    10·1 answer
  • Why is second ionization energy larger than first ionization energy
    9·2 answers
  • rank these species by their ability to act as an oxidizing agent from best oxidizing agent to best reducing agent. Ag+ cr3+ sn2+
    5·2 answers
  • From the options provided for each element below, choose the properties that it may have based on its location in the periodic t
    11·2 answers
  • What is the purpose of the scientific method?
    7·1 answer
  • Oxygen has 8 positively charged protons what is the number of negatively charged electrons in an atom of oxygen?
    15·1 answer
  • Climate change is ONLY caused by human activities<br> OTrue<br> O False
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!