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
gulaghasi [49]
3 years ago
8

someone pls help thanks - Calculate the total energy in the 1.5x10^13 photons of gamma radiation having wavelength of 3.0x10^-12

Chemistry
2 answers:
vlada-n [284]3 years ago
6 0

Answer:

  • <u><em>0.99 J</em></u>

<u><em></em></u>

Explanation:

<em>Photons</em> are quanta of light (electromagnetic radiation).

The energy of a photon can be determined using the Planck-Einstein's equation:

  • E = hυ = h×c/λ

Where:

  • E is the energy of one photon
  • h is Planck's constant = 6.626 × 10 ⁻³⁴ J.s
  • υ is the frequency
  • c is the speed of light, which you can approximate to 3.00×10⁸ m/s
  • λ is the wavelength (3.0 × 10⁻¹² m for this problem)

Substituting the data in the equation, you get:

  • E =  6.626 × 10 ⁻³⁴ J.s × 3.00×10⁸ m/s / 3.0 × 10⁻¹² m = 6.626×10⁻¹⁴ J

Since that is the energy of one photon, multiply by the number of photons to get the total energy:

  • Total energy =  6.626×10⁻¹⁴ J/ photon × 1.5 × 10¹³ photon = 0.99 J

Answer: 0.99 J (rounded to two significant figures).

gregori [183]3 years ago
6 0
<h3>Answer:</h3>

Total energy is 9.932 × 10^-1 Joules

<h3>Explanation:</h3>

Using the concept on energy of photons

Energy of a photon, E, is given by;

E = hf, where h is the plank's constant and f is the frequency of the radiation.

But, since frequency is given by dividing the velocity, c, by wavelength, λ,

Then; E = hc/λ

In this case; we are given more than one photons.

Therefore;

Energy = n × hc/λ , where n is the number of photons

Given;

n (the number of photons) = 1.5x10^13 photons

h (plank's constant) = 6.626× 10^-34 J/s

c (speed of light in vacuum) = 2.998 x 10^8 m/s

λ (wavelength of the radiation) = 3.0x10^-12 m

We can calculate energy;

     Energy =  (nhc)/λ ,

Energy = \frac{(1.5.10^{13})(6.626.10^{-34} J/s)(2.998.10^8 m/s)}{3.0.10^{-12} m}

                  = 9.932 × 10^-1 Joules

Thus the total energy in the 1.5x10^13 photons is 9.932 × 10^-1 Joules

You might be interested in
The rate constant for this second‑order reaction is 0.610 M − 1 ⋅ s − 1 0.610 M−1⋅s−1 at 300 ∘ C. 300 ∘C. A ⟶ products A⟶product
Darya [45]

Answer: It takes 3.120 seconds for the concentration of  A to decrease from 0.860 M to 0.260 M.

Explanation:

Integrated rate law for second order kinetics is given by:

\frac{1}{a}=kt+\frac{1}{a_0}

k = rate constant = 0.610M^{-1}s^{-1}

a_0 = initial concentration = 0.860 M

a= concentration left after time t = 0.260 M

\frac{1}{0.260}=0.860\times t+\frac{1}{0.860}

t=3.120s

Thus it takes 3.120 seconds for the concentration of  A to decrease from 0.860 M to 0.260 M.

8 0
3 years ago
What is the equilibrium constant of pure water at 25°C?
ANEK [815]
The equilibrium reaction, causes the water dissociation constant, Kw, is 1.01 × 10-14<span> at 25 °C. That is because every H</span>+<span> (H</span>3O+) ion these forms accompanied by the formation of an OH-<span> ion, are the concentrations of these ions and in pure water the same thing can be calculated from </span>Kw<span>. 

HOPED THIS HELP OUT ;)



</span>
6 0
2 years ago
Read 2 more answers
7. Describe the difference between a genetically modified organism (GMO) and an unmodified organism.
schepotkina [342]

Answer:

there

Explanation:

organic food is farmed and manufactured per the guidelines put forth by the Department of Agriculture. Organic food is typically pesticide-free, GMO-free, and sustainably farmed.

Non-GMO food, or non-genetically modified food, has not been altered or engineered in any way. Non-GMO food doesn’t necessarily adhere to the same guidelines that organic food does.

GMO food has been genetically modified in some form, usually in a laboratory.

4 0
2 years ago
PLSS HELP ASAP it's due
BartSMP [9]
<h3>Answer:</h3>

87.02%

<h3>Explanation:</h3>

Percent yield of a product in a chemical equation is the ratio of actual or experimental yield to theoretical yield expressed as percentage.

In this case we are given;

Mass of Zinc as 7.23 g

Actual volume of Hydrogen gas produced as 2.16 L

We are required to calculate the percentage yield of Hydrogen gas;

<h3>Step 1: Write a balanced equation for the reaction</h3>

The balanced equation for the reaction between Zinc metal and Hydrochloric acid is given by;

Zn(s) + 2HCl(aq) → ZnCl₂(aq) + H₂(g)

<h3 /><h3>Step 2: Moles of Zinc metal that reacted </h3>

Moles are given by dividing mass with molar mass

Moles = Mass ÷ Molar mass

Molar mass of Zinc = 65.38 g/mol

Therefore;

Number of moles = 7.23 g ÷ 65.38 g/mol

                             = 0.1106 moles

<h3>Step 3: Calculate the number of moles of Hydrogen gas produced</h3>

From the equation 1 mole of Zinc results in the formation of 1 mole of Hydrogen gas.

Therefore, Moles of hydrogen gas = Moles of Zinc × 1

                                                         = 0.1106 moles × 1

                                                         = 0.1106 moles

<h3>Step 4: Calculate the theoretical volume of Hydrogen gas produced.</h3>

At STP, 1 mole of a gas occupies 22.4 Liters

Therefore;

Volume of Hydrogen = Number of moles × 22.4 L

                                   = 0.1106 mole × 22.4 L

                                  = 2.477 L

<h3>Step 5: Calculate the percent yield </h3>

Percent yield = (Actual yield ÷ Theoretical Yield) × 100%

                      = (2.16 L ÷ 2.477 L)× 100%

                     = 87.20%

Thus, the percent yield of hydrogen gas produced is 87.02%

8 0
3 years ago
How many atoms of neon (Ne) are in a 1452.96 moles sample of neon?
Firlakuza [10]

Answer:

8749.73× 10²³ atoms of He

Explanation:

Given data:

Number of atoms of neon = ?

Number of moles of neon = 1452.96 mol

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

1452.96 mol ×  6.022 × 10²³ atoms of He/ 1 mol

8749.73× 10²³ atoms of He

7 0
3 years ago
Other questions:
  • Correct each of the following statements: (a) In the modern periodic table, the elements are arranged in order of increasing ato
    5·1 answer
  • Determine the correct set of coefficients to balance the chemical equation. __c6h6(l) + __o2(g)? __co2(g) + __h2o(g)
    6·1 answer
  • The substances in a chemical reaction that are combined or separated to form new substances are the _______.
    13·2 answers
  • What happens immediatesly after you dissolve acid in water? Positively charged hydrogen atoms are released. Positively charged h
    7·1 answer
  • Which of the following statements about the ordinary IR spectroscopic regions are TRUE? 1. In general, the IR FUNDAMENTAL region
    8·1 answer
  • What is the result of the following calculation? Record to the correct number of significant figures. 7.94 g + 0.0132 g = ?
    5·1 answer
  • 43 mg = [?]g <br>A. 0.043 g <br>B. 4.3 g <br>C. 4300 g <br>D. 43,000 g​
    11·1 answer
  • Compared with halogens, the alkali metals in the same period has
    13·1 answer
  • A. How many moles AgNO3 will need to make 6.5 moles of Ca (NO3)2?
    10·1 answer
  • Calculate the wavelength (in nm) of a photon emitted when an electron
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!