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
SSSSS [86.1K]
3 years ago
10

How and why are Endothermic and Exothermic reactions chemical changes?

Chemistry
1 answer:
Olin [163]3 years ago
8 0

Answer:

Chemical reactions often involve changes in energy due to the breaking and formation of bonds. Reactions in which energy is released are exothermic reactions, while those that take in heat energy are endothermic.

Explanation:

You might be interested in
The molecular weight of NaCl is 58.44 grams/moles. How many grams of NaCl are found in a beaket with 100 ml of a 0.0050 M soluti
Viktor [21]

Answer:

The mass of NaCl is 0.029 grams

Explanation:

Step 1: Data given

Molecular weight of NaCl = 58.44 g/mol

Volume of solution = 100 mL = 0.100 L

Molarity = 0.0050 M

Step 2: Calculate moles NaCl

Moles NaCl = molarity * volume

Moles NaCl = 0.0050 M * 0.100 L

Moles NaCl = 0.00050 moles

Step 3: Calculate mass NaCl

Mass NaCl = moles NaCl * molar mass NaCl

Mass NaCl = 0.00050 moles * 58.44 g/mol

Mass NaCl = 0.029 grams

The mass of NaCl is 0.029 grams

4 0
3 years ago
Common additives to drinking water include elemental chlorine, chloride ions, and phosphate ions. Recently, reports of elevated
NeX [460]

Answer:

Check the explanation

Explanation:

Kindly check the attached image below to see the step by step explanation to the question above.

8 0
3 years ago
Most matter is made up of _____, rather than single _____.
bixtya [17]

Answer:

molecules, elements

Explanation:

molecules are a mix of elements

7 0
2 years ago
What happens if you drink juice instead of water? reddit?
lina2011 [118]
Juice can be sugary so it can add more fat to your body... I don’t know man lol
8 0
3 years ago
Which atom has the largest atomic radius? potassium rubidium Francium cesium
suter [353]
Francium has the largest atomic radius.
5 0
3 years ago
Other questions:
  • How is condensation explained by the Kinetic Molecular Theory? Cooling reduces particle motion, resulting in coalescence by attr
    11·2 answers
  • Write the symbolic notation of an isotope of an element having 8 protons, 8 electrons, and 11 neutrons. Click on the “Templates”
    7·1 answer
  • Calculate the volume of a container that is 8.9 centimeters long, 5.2 centimeters wide, and 2.55 cm tall. Choose an appropriate
    6·1 answer
  • The same baseball is thrown two different times The second throw is faster than the first throw.Which has more kinetic energy?
    6·1 answer
  • What products would you expect from a reaction between hcl and koh?
    15·1 answer
  • Complete el crucigrama sobre conceptos del agua.
    11·1 answer
  • A person accidentally swallows a drop of liquid oxygen, O2(l), which has a density of 1.149 g/mL. Assuming the drop has a volume
    7·2 answers
  • Need help on this question
    7·2 answers
  • Please help me!! A sample of an unknown metal has a mass of 22.4g. A graduated cylinder contains 3.2 ml of water. After the meta
    14·1 answer
  • How many grams are in 6 moles of MgCl2?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!