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
wlad13 [49]
3 years ago
14

Calculate the wavelength and frequency of an emitted photon of gamma radiation that has energy of 2.93 × 109 J/mol

Chemistry
1 answer:
shusha [124]3 years ago
6 0

Answer:

Explanation: Calculate the wavelength and frequency of an emitted photon of gamma radiation that has energy of 2.93 × 109 J/mol

You might be interested in
The rate constant for a certain reaction is k = 4.70×10−3 s−1 . If the initial reactant concentration was 0.700 M, what will the
Lynna [10]

Answer:

Therefore the concentration of the reactant after 4.00 minutes will be 0.686M.

Explanation:

The unit of k is s⁻¹.

The order of the reaction = first order.

First order reaction: A first order reaction is  a reaction in which the rate of reaction depends only the value of the concentration of the reactant.

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

[A] = the concentration of the reactant at time t

k= rate constant

t= time

Here k= 4.70×10⁻³ s⁻¹

t= 4.00

[A₀] = initial concentration of reactant = 0.700 M

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

\Rightarrow -\frac{d[A]}{[A]}=kdt

Integrating both sides

\Rightarrow\int -\frac{d[A]}{[A]}=\int kdt

⇒ -ln[A] = kt +c

When t=0 , [A] =[A₀]

-ln[A₀]  = k.0 + c

⇒c= -ln[A₀]  

Therefore

-ln[A] = kt - ln[A₀]

Putting the value of k, [A₀] and t

- ln[A] =4.70×10⁻³×4 -ln (0.70)

⇒-ln[A]=  0.375

⇒[A] = 0.686

Therefore the concentration of the reactant after 4.00 minutes will be 0.686M.

5 0
3 years ago
A 0.8115 g sample of HCl was placed into a 50 mL volumetric flask and the sample was thoroughly dissolved in water to make 50 mL
inysia [295]

Answer:

Molarity of NaOH solution is 1.009 M

Explanation:

Molar mass of HCl is 36.46 g/mol

Number moles = (mass)/(molar mass)

So, 0.8115 g of HCl = \frac{0.8115}{36.46}moles HCl = 0.02226 moles HCl

1 mol of NaOH neutralizes 1 mol of HCl.

So, if molarity of NaOH solution is S(M) then moles of NaOH required to reach endpoint is \frac{S\times 22.07}{1000}moles

So, \frac{S\times 22.07}{1000}=0.02226

or, S = 1.009

So, molarity of NaOH solution is 1.009 M

5 0
3 years ago
2-ciclopropilpropano​
DaniilM [7]

Answer:

cool

Explanation:

3 0
2 years ago
Noz at
Ne4ueva [31]

Answer:

<h2> ncjchchdgshdihdyshfjgjfjfjfjfjfjfjcjfjfjcn jivk kvi</h2>
4 0
3 years ago
Which equation correctly defines Hooke's law?
den301095 [7]
I think it is the third one.
4 0
3 years ago
Read 2 more answers
Other questions:
  • How does a car get elcetricity
    14·1 answer
  • What is the compound MnCl2 called?
    7·1 answer
  • The molar mass of c3h8o2 (four significant figures) is ________.
    6·1 answer
  • The barium isotope 133Ba has a half-life of 10.5 years. A sample begins with 1.1×1010 133Ba atoms. How many are left after (a) 6
    6·1 answer
  • Which statement describes an intensive property of matter?
    15·2 answers
  • Which salt solution is more concentrated, solution a, which contains 18g of salt in 6l of water, or solution b, which contains 2
    13·1 answer
  • What is the bond angle of a methane molecule that contains four hydrogen atoms bonded to one carbon atom?
    9·2 answers
  • Do mutations occur in DNA and RNA?
    6·2 answers
  • Explain why the element of an atom doesn't change if you remove or add electrons or neutrons
    10·1 answer
  • What is the concentration of acetic acid if three 65.0 mL samples of actic acid were neutralized with 16.8 mL, 18.2 mL, and 17.3
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!