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
viva [34]
3 years ago
12

______ reactions release energy.

Chemistry
1 answer:
Igoryamba3 years ago
4 0
Combustion reactions release energy in the form of heat. 
        Hope this helps and tell me if you need more help!
You might be interested in
How many moles of calcium are there in 5.74 x 1022 atoms of calcium?
igor_vitrenko [27]

Answer:

0.095 moles of Calcium is there in 5.74 x 1022 atoms of calcium.

Explanation:

  • As we know, 6.023*10^23 atoms of an element is equal to its atomic weight.

       And, 6.023*10^23 atoms of an element is also equal to 1 mole of the             element.

We have,

  • 6.023*10^23 atoms of element calcium equals to 1 mole of Calcium
  • 5.74*10^22 atoms of element calcium equals to

         (1/(6.023*10^.23)) * 5.74*10^22 moles of calcium

Therefore,

  • 5.74 x 1022 atoms of calcium= 0.095 moles of calcium.

6 0
3 years ago
What is significant about the temperature absolute zero
lara [203]
<span>0 K on the Kelvin scale, which is absolute temperature scale; and –273.15 degrees Celsius on the Celsius scale, thus world wide has come to an agreement saying absolute zero is precisely. </span>
4 0
3 years ago
Read 2 more answers
Which missing item would complete this beta decay reaction?
madam [21]

Answer:

<h3>The answer is option A.</h3>

Hope this helps you

8 0
3 years ago
H2 + O2 ---&gt; H2O<br> Classifying reaction
Degger [83]

Answer:

hydrogen + oxygen = water

3 0
3 years ago
Read 2 more answers
Which of the following describes the location and energy of all the valence electrons
Nastasia [14]

Answer:

1s22s22p6<u>3s23p4</u>

Explanation:

Sulfur is located in the p block and has 6 valence electrons (the 2 exponent on the 3s and the 4 exponent on the 3p add up to 6)

4 0
3 years ago
Other questions:
  • An experiment is designed to determine if the amount of sugar in a drink affects the likelihood that bees will be attracted to i
    14·2 answers
  • A graduated cylinder contains 15.75 mL of water. A metal that weighs 53.405 g is added.
    10·1 answer
  • Which of the following statements correctly distinguishes between an acidic and a basic solution? . A. An acidic solution contai
    8·1 answer
  • What is the WATER concentration in 1 liter of a solution that contains 2 moles of ions? (NOT the ion concentration)
    13·1 answer
  • Iron-59 has a half-life of 45.1 days. How old is an iron nail if the Fe-59 content is 25% that of a new sample of iron? Show all
    5·1 answer
  • How many oxide ions are in 0.55 grams of titanium oxide?
    6·1 answer
  • What is the sum of kinetic energy and potential energy?
    15·1 answer
  • How to spell poop help please
    14·2 answers
  • During what change is heat absorbed?
    13·2 answers
  • Osmium has a density of 22.6 g/cm^3. What volume (in cm^3) would be occupied by a 21.8 g sample of osmium?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!