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
Aleksandr [31]
3 years ago
13

Reactions cannot occur without a certain minimum amount of energy. What is this amount of energy called?

Chemistry
1 answer:
d1i1m1o1n [39]3 years ago
8 0
Activation energy is the asnwer
You might be interested in
Plants have functions that make them a(n) ?????????? part of the world. ^Insignificant or vital
olga55 [171]
I don't fully understand your question, but I believe that plants have functions that are vital to the planet. They take sunlight, make it into food for themselves, and release oxygen that we need to survive.
5 0
3 years ago
Is a light bulb chemical or physical change. State evidence why
irakobra [83]

Answer:

It is a chemical change.

Explanation:

When the electricity is off, the filament cools down to its original physical state. This physical process repeats every time the light is turned on and off. However, if the bulb is cracked and air is introduced, the oxygen in the air reacts with the tungsten filament which then undergoes a chemical change.

8 0
3 years ago
Gaseous methanol (CH4O) reacts with oxygen gas to produce carbon dioxide gas and liquid water. Balanced the equation using the l
NikAS [45]

Answer:

The sum of the coefficients in the balanced equation is 11

Explanation:

A reaction where an organic compound reacts with oxygen to produce carbon dioxide and water is called combustion.

The balance reaction of combustion for methanol is:

2CH₃OH (l) + 3O₂(g) →  2CO₂(g)  +  4H₂O (g)

Coefficients from stoichiometry are 2, 3, 2 and 4

Sum =  2 + 3 + 2 + 4 = 11

4 0
3 years ago
Why is it necessary to find the percent yield of a reaction? A. to determine the efficiency of the reaction B. to determine the
Sveta_85 [38]

Answer:

Explanation:

Answer:

A. to determine the efficiency of the reaction

Explanation:

Percentage is the ratio of the actual yield to theoretical yield as a percentage. It is calculated by dividing the actual yield by theoretical yield then multiplying by 100%.

Calculation of percentage yield is important as it helps in the determination of efficiency of a reaction. For example in most industries for the purpose of making the most product with the least waste.

Additionally, calculating the percentage yield helps in determining other products that may be formed during the reactions.

7 0
3 years ago
What molality of a nonvolatile, nonelectrolyte solute is needed to raise the boiling point of water by 7.10°c (kb = 0.520°c/m)?
faltersainse [42]
According to boiling point elevation equation:
Δ T = i Kb m
when ΔT (change in boiling point) = 7.10 C° 
and i (van't Hoff factor)= 1
and Kb = 0.520
so, by substitution:
7.10 = 1*0.520 *m
m = 7.1 / 0.52 = 13.65 m
7 0
3 years ago
Other questions:
  • Which stament about energy is mostly correct
    14·1 answer
  • The protein keratin is composed of two helical strands that wrap around each other in what is called a coiled coil. The two stra
    12·1 answer
  • Where is an earthquake most likely to occur?
    9·2 answers
  • Name the cycloalkanes with molecular formula c6h12 that have a 3-membered ring and two substituents.
    8·1 answer
  • Which groups are potassium (K) and calcium (Ca) ) in ? Describe the similarities and differences between these groups
    5·1 answer
  • PLEASE HELP ASAP!!!
    12·2 answers
  • What is the Ka of a 0.0326 M solution of hydrofluoric acid with a pH of 3.94?
    13·1 answer
  • Which characteristics define a liquid?
    11·2 answers
  • Dos moléculas de Clorato de Potasio en estado sólido, al aplicarle calor se descompone en dos moléculas de Cloruro de Potasio en
    15·1 answer
  • In pea plants, yellow seeds are dominant to green seeds. A heterozygous yellow-
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!