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
kherson [118]
3 years ago
15

What is a chemical reaction that absorbs heat called?

Chemistry
2 answers:
kumpel [21]3 years ago
6 0

A chemical reaction that absorbs heat is called an endothermic reaction.

Gnesinka [82]3 years ago
6 0

Answer:

Chemical reactions can be classified as either exothermic or endothermic. An exothermic reaction releases energy into its surroundings. An endothermic reaction, on the other hand, absorbs energy from its surroundings in the form of heat.

Explanation:

You might be interested in
Calculate the maximum wavelength of light that will cause the photoelectric
Drupady [299]

Answer:

Explanation:

Work function of potassium = 2.29 eV = 3.67 X 10⁻¹⁹ J

So the minimum energy of photon must be equal to 3.67 X 10⁻¹⁹ J .

energy of photon of wavelength λ = hc / λ

where h = 6.67  x 10⁻³⁴

c = 3 x 10⁸

Putting the values in the equation above

6.67  x 10⁻³⁴  x  3 x 10⁸ / λ =  3.67 X 10⁻¹⁹

λ  = 6.67  x 10⁻³⁴  x  3 x 10⁸ /  3.67 X 10⁻¹⁹

= 5.452 x 10⁻⁷

= 5452 x 10⁻¹⁰ m

= 5452 A .

6 0
3 years ago
Draw the lewis structure for bef2 in the box at the right, including lone pairs.
Kamila [148]

Answer :

Lewis-dot structure : It shows the bonding between the atoms of a molecule and the unpaired electrons present in the molecule.

The given molecule is, BeF_2

Beryllium has '2' valence electrons and fluorine has '7' valence electrons. Beryllium is the central atom and fluorine is the terminal atom.

Total number valence electrons in BeF_2 = 2 + 2(7) = 16

According to the Lewis-dot structure, there are '4' number of bonding electrons and 12 number of non-bonding electrons (lone-pair).

The Lewis-dot structure is shown below.

3 0
2 years ago
In The Lord of the Rings, Frodo and Sam use a rope to rappel down a cliff. The rope was 30 ells long. How high was the cliff in
Tcecarenko [31]

Answer:

324 meters

Explanation:

I don't really have an explanation

7 0
3 years ago
What is the [H+] in a solution with pOH of 0.253?
sergey [27]
PH + pOH = 14

pH + 0.253 = 14

pH = 14 - 0.253

pH = 13.747

[ H+] = 10 ^ -pH

[ H+ ] = 10 ^- 13.747

[ H+ ] = 1.790x10⁻¹⁴ M

hope this helps!
4 0
3 years ago
Read 2 more answers
Matter appears to be conserved in chemical reactions but not in nuclear reactions because:
Vlad [161]
I think the best answer is B. Even this is the broadest case for the Conservation of matter and the one for Energy, the only way this can be applied is in nuclear rxns.
8 0
3 years ago
Read 2 more answers
Other questions:
  • HELP PLS<br> kakwkwkwkkwkwkw
    9·1 answer
  • What do elements in the same group in the periodic table have in common
    11·1 answer
  • Calculate the specific heat of a substance when 63j of energy are transferred as heat to an 8.0 g sample to raise it temperature
    10·2 answers
  • What is the basic definition of carbohydrates
    9·2 answers
  • An atom that has 13 protons and 15 neutrons is isotope of the element A.) nickel B.) silicon C.) aluminum D.) phosphorus. Why?
    8·2 answers
  • 2 NaOH + H2SO4 → 2 H,0 + Na S04
    14·1 answer
  • The effect of pH on the binding of oxygen to hemoglobin results in:
    14·1 answer
  • 6.) 50.0 mol H2O<br> ? molecules
    13·1 answer
  • How much NaOH (in moles) must be added to 1 L of a buffer solution that is 1.8 M in acetic acid and 1.2 M in sodium acetate to r
    9·1 answer
  • What is a polyprotic buffer?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!