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
RSB [31]
3 years ago
8

Consider the reaction ALaTeX: \longrightarrow ⟶ Products. The rate law for this reaction is rate = k[A]2 where k=2.90 LaTeX: \ti

mes × 10-2 M-1s-1 at a particular temperature. If the initial [A] = 0.0500 M, what is the value of the half-life?
478 s
34.5 s
690. s
23.9 s
Chemistry
1 answer:
quester [9]3 years ago
6 0

Answer: 690 s

Explanation: Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.

For a reaction: A\rightarrow Products

Rate=k[A]^2

k= rate constant=2.90\times 10^{-2}

x = 2= order with respect to A

For a second order reaction, t_\frac{1}{2}=\frac{1}{k\times [A_0]}

t_{\frac{1}{2}= half life = time taken for a reaction to complete to half.  

[A_0]=initial concentration= 0.0500 M

Thus t_{\frac{1}{2}=\frac{1}{2.90\times 10^{-2}\times [0.0500]}=690s

You might be interested in
what two variables is acceleration dependent on? what is the relationship between these variables and acceleration?
Citrus2011 [14]
Acceleration (change of movement) of an object is dependent on the net force acting on it and its mass.

The relationship between acceleration (a), force (f) and mass (m) is given by the Second Lay of Newton: f = m * a.

Note that the force, f, is the net force acting on the objetct.

I hope this help you.


8 0
3 years ago
True or False: Water molecules "stick together" due to hydrogen bonds.
Dimas [21]

Answer:

True

Explanation:

To begin with,

Hydrogen bonds are attractions that contain a force caused by the difference in charge. This is due to the positive hydrogen ions as well as  slightly negative ions. Therefore, hydrogen bonds make water molecules 'sticky.' To add, the attractions between hydrogen bonds are weaker than ionic and covalent bonds but strong enough to cause them to 'stick together'

Hope this helps.

6 0
3 years ago
Which of the following is an interaction is responsible for the force of attraction between the particles in a salt crystal?
mojhsa [17]
Answer: option B) proton-electron.

The particles inside a salt crystal are ions. The electrostatic attraction between the positive ions are the negative ions is responsible for the crystal structure. In last stay, the protons are responsible for the positive charge and the electrons for the negative charge. Then you can say that the interaction proton-electron is responsible for the force of attraction between the particles in a salt crystal.


7 0
4 years ago
Indicate the types of forces that are involved between the solute and solvent when forming a homogeneous solution between CH3CH2
Sliva [168]

Answer:

London dispersion forces

Explanation:

Intermolecular forces are the forces that facilitate interaction between solute and solvent molecules and thereby impact their solubility. These forces are broadly classified into four types arranged below from the strongest to the weakest:

1) Ionic > 2) Hydrogen bonding >3) Dipole-dipole >4) London dispersion

The hydrocarbons n-pentane CH_{3}CH_{2}CH_{2}CH_{2}CH_{3} and n--hexane CH_{3}CH_{2}CH_{2}CH_{2}CH_{2}CH_{3} are non-polar molecules. Therefore the only type of interaction that exists between them when forming a homogeneous solution are the weak london dispersion forces.

4 0
3 years ago
Read 2 more answers
Why are nobel gases grouped together on the periodic table?
Black_prince [1.1K]
This is because, for the main reason that these elements that are mostly monatomic, are unreactive, they do not react, or in other words, exchange, and or share valence electrons through chemical bonds, as they already posses the maximum number of valence electrons in their valence shell, which is 8.
6 0
3 years ago
Read 2 more answers
Other questions:
  • Explain how the scientific method helps scientists.
    9·1 answer
  • Which of the following statements describes alkenes and alkynes but not alkanes?
    8·1 answer
  • What is the main function of starch in plants
    10·2 answers
  • The total number of atoms represented by the formula Fe3(PO4)2 is
    9·2 answers
  • What do you call a compound that is combined physically but not chemically
    7·1 answer
  • Which correctly lists three characteristics of minerals?
    10·2 answers
  • What does it mean to be an exothermic chemical reaction? a) Energy is released when no new substances are made. b) Energy is rel
    12·1 answer
  • What is the final volume if 3.4 L of nitrogen gas at 400 K is cooled to 200 K and kept at
    8·1 answer
  • Can someone help me with this?
    6·1 answer
  • 21. Which of the following is the best way to clean up an acid spill?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!