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
Westkost [7]
3 years ago
8

Explain why, even though a collision may have energy in excess of the activation energy, what reaction may not occur ?

Chemistry
1 answer:
Nata [24]3 years ago
4 0

Activation energy is the energy needed to start a reaction, eg the flame needed to start ... Collisions may have enough energy to react yet not react if the orientation of the molecules is incorrect. Difficult to explain here without graphics, but basically of the molecules are facing the wrong way it won't happen.

You might be interested in
Copper has a density of 8.920 g/cm3. What mass of copper will occupy 45cm3? What volume of copper will have a mass of 1.0 kg?
mixas84 [53]
Density = mass/volume
so rearranged mass = volume x density
mass = 8.920 x 45 = 401.4g

rearrange   (there are 1000grams in 1kg)
volume = mass/density
volume = 1000/8.920
volume = 112.1076233cm3
5 0
3 years ago
CH4(g) + H2O(g) CO(g) + 3H2(g)
boyakko [2]
Presuming the arrow is between H20 and CO

On the left there are 2 gas moles.
On the right there are 4 gas moles.

The equilibrium will shift to the side with the most no. He gas moles when pressure is decreased.

Therefore the answer is A, since 4>2.

If you have any questions, feel free to ask
5 0
3 years ago
In a physical change of matter,​
mel-nik [20]

Answer: C. no new substances are formed<span>
</span><span>
<span>In the physical change of matter, there is no new substance that is formed. It is only the appearance of the matter that is being changed and not its chemical composition. Cutting, tearing and grinding are only some of the examples that exhibit physical change. </span></span>

5 0
3 years ago
Read 2 more answers
What is measured by the reaction rate? the probability that a reaction will occur the speed at which products form the time requ
Cloud [144]

Answer: the speed at which products form

Explanation:

Rate of a reaction is defined as the speed at which a chemical reaction proceeds. It is often expressed in terms of the concentration of a reactant that is consumed in a unit time or the concentration of a product that is formed in a unit of time.

For a general reaction :A\rightarrow B

Rate=-\frac{d[A]}{dt}

or Rate=+\frac{d[B]}{dt}

where d[A] = change in concentration of reactant A

d[B] = change in concentration of product B

dt = time interval

5 0
3 years ago
What is the percent composition of sodium oxide?
4vir4ik [10]

Sodium : 74.186%

Oxygen : 25.814%

7 0
3 years ago
Read 2 more answers
Other questions:
  • How many of the following elements have 2 unpaired electrons in the ground state? C Te Hf Si
    14·1 answer
  • What is an input force?
    12·2 answers
  • If a particular ore contains 58.8 % calcium phosphate, what minimum mass of the ore must be processed to obtain 1.00 kg of phosp
    5·1 answer
  • The best description for the original composition of the universe is _________​, __________, and _________
    14·1 answer
  • Why does a solution of acid and sodium thiosulfate go cloudy
    8·1 answer
  • What is the Noble gas notation for mercury (Hg)?.
    13·1 answer
  • Tanks of compressed gas must be kept away from heat sources. If a compressed–gas tank is heated too much, it may explode and cau
    7·2 answers
  • Quartz,SiO2,contains 46.7% silicon. What mass of silicon is present in 381 g of quartz?
    8·1 answer
  • Pls help me will give brainliest.
    15·2 answers
  • Name the element described in each of the following:
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!