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
slega [8]
3 years ago
9

Determine the energy in joules or a photon with frequency of 5.78 x 10^17 Hz​

Chemistry
1 answer:
xenn [34]3 years ago
4 0

Answer:

E= 3.829 x 10-16 J

Explanation:

Data Given

Frequency= 5.78 x 10^17 Hz

Energy in joules = ?

Solution:

Formula used to calculate Energy

E= hv…………….. (1)

Where E is Energy

h is Planks Constant = 6.626 x 10–34 J s

v is frequency

The given frequency is in Hz (Hertz)

Hz is equal to s-1 (per second)

1 hertz = 1 /second

Putting the values in Equation 1

E= (6.626 x 10–34 J s) (5.78 x 1017 s-1)

E= 3.829 x 10-16 J

You might be interested in
Enter your answer in the provided box. Before arc welding was developed, a displacement reaction involving aluminum and iron(III
Likurg_2 [28]

Answer:

grams of iron = 2262.4  g

Explanation:

The balanced chemical equation should be represented first.  

2Al + Fe2O3 → Al2O3 + 2Fe

find the limiting reactants by converting to moles.

covert 1.64 kg to grams = 1640 g

moles = mass/molar mass = 1640/27 = 60.7407407407  moles

60.7407407407 × 1 mol-rxn /2 = 30.37  mol-rxn

The limiting reactant is Fe2O3 Therefore it will determine the yield of Iron

2Al + Fe2O3 → Al2O3 + 2Fe

molar mass of Fe2O3 = 56 × 2 + 16 × 3 =  112 + 48 = 160 g

atomic mass of iron = 56

mass of iron in the reaction = 56 × 2 = 112 g

moles = mass/molar mass

mass = moles × molar mass

mass = 20.2 × 160 = 3232  g

if 160 g of Fe2O3  give 112 g of iron

3232 g of Fe2O3 will give ? grams of iron

grams of iron = 3232 × 112/ 160

grams of iron = 361984 /160

grams of iron = 2262.4  g

7 0
3 years ago
Trans-2-butene does not exhibit a signal in the double-bond region of the spectrum (1600–1850 cm−1); however, ir spectroscopy is
Elza [17]
However <em>trans</em>-2-Butene does not give a characteristic peak in 1620-1680 cm⁻¹ region but still the presence of carbon double bond carbon can be detected by detecting following peaks in IR Spectrum.

1)  3010-3100 cm⁻¹:
                               As in trans-2-Butene a hydrogen atoms ate attached to sp² hybridized carbon, therefore the stretching of =C-H (C-H) bond will give a peak of medium intensity in the range of 3010-3100 cm⁻¹.

2)  675-1000 cm⁻¹:
                             Another peak which is given by the bending of =C-H (C-H) bond with strong intensity will appear in the range of 675-1000 cm⁻¹.
3 0
4 years ago
A compound has a molecular formular of C12H24O6.What is the compound's empirical formula ​
scoundrel [369]

Answer:

The empirical formula for C12 H24 O6 is C2 H4 O.

5 0
4 years ago
Read 2 more answers
&gt;
DiKsa [7]

Answer:

It has a negative charge and is located in orbitals around the nucleus

Explanation:

5 0
3 years ago
Read 2 more answers
How many Hydrogen atoms are there in 5 g of NH3? (molar mass of NH3 = 17<br>g/mol)​
goldfiish [28.3K]

Answer:5.309 × 10²⁴ atoms.

Explanation:

Given that

molar mass of NH3 = 17 g/mol

Mass of NH3 = 5g

Therefore, No of moles of NH3 = Mass/ molar mass

=  5g/ 17g/mol

= 0.294 moles.

I  mole = 6.02 × 10²³ atoms

Therefore  the number of hydrogen atoms in a 0.294 moles of ammonia  gives us

0.294× 6.02 × 10²³ × 3  ( since there are 3 hydrogens in Ammonia )

= 5.309 × 10²⁴ atoms.

5 0
3 years ago
Other questions:
  • Do you think there is a time when we will run out of fossil fuels to burn. why or why not?
    8·1 answer
  • What was Antoine Henri Becquerel studying when he discovered radioactivity?
    10·1 answer
  • Acetylene is the substance burned in oxy-acetylene torches. Write a balanced equation for the complete oxidation reaction that o
    6·1 answer
  • Which statement describes a chemical property of oxygen
    5·2 answers
  • What is one pro and one con of mining?
    10·1 answer
  • COMMONLIT: WATER SCARCITY: A GLOBAL ISSUE
    13·1 answer
  • 3. I have 10 moles of a gas mixture. If there are 2.7 moles of hydrogen gas
    9·1 answer
  • The part of an atom that has an overall positive charge is called
    7·1 answer
  • Which change is an unlikely result of destruction of wetlands?
    11·2 answers
  • Fossil fuel in a sentence <br> biomass in a snentence
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!