Answer:
3.46
⋅
10
−
19
J
The energy of a photon is proportional to its frequency, as stated by the Planck - Einstein's equation
E
=
h
⋅
ν
, where
E
- the energy of the photon
h
- Planck's constant, equal to
6.626
⋅
10
−
34
J s
ν
- the frequency of the photon
Now, notice that you are given the wavelength of the photon,
λ
. As you know, frequency and wavelength have an inverse relationship described by the equation
λ
⋅
ν
=
c
, where
c
- the speed of light in vacuum, approximately equal to
3
⋅
10
8
m s
−
1
This means that the relationship between energy and wavelength looks like this
λ
⋅
ν
=
c
⇒
ν
=
c
λ
E
=
h
⋅
c
λ
Another important thing to notice here is that the wavelength of the photon is given in nanometers,
nm
. You need to convert this to meters, the unit used for the value of the speed of light.
E
=
6.626
⋅
10
−
34
J
s
⋅
3
⋅
10
8
m
s
−
575
⋅
10
−
9
m
=
3.46
⋅
10
−
19
J
Explanation:
Brainliest please?
If the half-life of substance A is 1.5 years, how long would it take an 8.0 gram sample of stances A to decay such that only 1.0 gram remained?
Answer: 4.5 Years
Explanation:
8 -> 4 -> 2 -> 1
Substance goes through 3 Half-Lives
3 Half-Lives x 1.5 Years = 4.5 Years
Answer:
4.5 i think
Explanation:
pls help me with science
The Calories on a food label indicate the
amount of energy the food contains in
one serving. Which form of energy is
contained in food?
Answer:
chemical energy
Explanation:
6.3 moles of water h20
Answer:
6.3 moles of water = 6.3*18=113.4 grams per mole
Explanation:
if hydrochloride tablets and eno combine what will the reaction
answer is attached in the image below
Answer:
Hydrochloric Acid
Explanation:
How do Ionic bods form in binary compounds?
Answer:
Ionic bonding is the complete transfer of valence electron(s) between atoms and is a type of chemical bond that generates two oppositely charged ions. By losing those electrons, these metals can achieve noble-gas configuration and satisfy the octet rule. ...
Explanation:
I HAVE 5 minutes HELP!!
Which organelle accurately completes the chart?
O lysosome
O cell wall
O vacuole
O endoplasmic reticulum
Answer:
endoplasmic reticulum
Explanation:
Endoplasmic reticulum will complete the chart. The Endoplasmic reticulum is one type of organelle that is present in eukaryotic cells. They form a network that is interconnected with membrane-enclosed sacs or structures that are tube shaped and are called cisternae.
An isotope of carbon has 6 protons and 8 neutrons. What is the atomic mass of this element?
6
O 12
O 12.011
O 14
Answer:
14
Explanation:
Atomic mass = protons + neutrons
6 + 8 = 14
. Now Sara comes along, and she is the exact same size as you. However, she is even stronger than you are! When she pulls you in the wagon, she pulls with a greater force than when you pull her. Now who is in the wagon when it has the greatest acceleration? Explain, using Newton's second law. Sara would win because she is stronger but we have the same force.
Answer:
See explanation
Explanation:
According to Newton's second law, the rate of change of momentum is proportional to the impressed force.
Mathematically;
Ft = mv - mu
Where;
F = Force
t = time
m= mass
v = final velocity
u = initial velocity
Since the mass is the same, the equation reduces to;
Ft = m(v-u)
So
F= m(v-u)/t
but
(v-u)/t = acceleration (a)
F = ma
a = F/m
Since the mass is the same because Sarah is the same size as i am but she pulls with a greater force, it follows that i will be the one in the wagon when the wagon has the greatest acceleration because the force that Sarah applies when pulling me is greater than the force i will apply when pulling her.
PLEASE HELP
The area in which you live has a particular climate. It also has weather. Which claim describes the difference between climate and weather?
Group of answer choices
Weather is determined by temperature and precipitation, whereas climate is determined only by humidity, air pressure, and wind conditions.
Climate is the condition of Earth’s atmosphere at a particular time and place, whereas weather is the characteristic climate in an area over a long period of time.
Climate is determined by temperature and precipitation, whereas weather is determined only by humidity, air pressure, and wind conditions.
Weather is the condition of Earth’s atmosphere at a particular time and place, whereas climate is the characteristic weather in an area over a long period of time.
Answer:
Weather is the condition of Earth’s atmosphere at a particular time and place, whereas climate is the characteristic weather in an area over a long period of time.
Explanation:
Weather and climate are two very important conditions that describes the atmospheric overview of a place.
Weather is reported over a short period of time, it is the condition of the atmosphere at a particular time and place.
Climate is reported over a long period of term. The average weather condition of a place over a long period of time is the climate.
The most important control over the climate of a place is the temperature and amount of precipitation it receives over a period of time. Weather conditions is reported using more diverse factors such a temperature, pressure, humidity, precipitation, etc.group viia elements are very active non metals give reason
Answer:
because they need only one electron
The more bonds an atom can make, the more likely it is to combine with other atoms in different ways Which element is most likely able to make the greatest variety of bonds? a. nitrogen b. hydrogen c. oxygen d. carbon
Answer:
D. Carbon.
Explanation:
Carbon can be mixed with Many things. for example, YOU are mostly made out of carbon. Other things include furniture, clothing, plastics, charcoal, pencil led, diamonds, and gas.
Answer:
b xplanation:
One isotope of a nonmetallic element has mass num- ber 127 and 74 neutrons in the nucleus. The anion derived from the isotope has 54 electrons. Write the symbol for this anion.
Answer:
I⁻
Explanation:
The identity of the element is obtained when the proton number is known.
Mass Number = 127
Neutrons = 74
Number of protons is obtained from;
Protons = Mass Number - Number of Neutrons
Protons = 127 - 74 = 53
The element is Iodine and it's symbol is I.
However, The anion derived from the isotope has 54 electrons
A neutral Iodine should have 53 electrons. This means it has gained a single electron. The symbol is now written as;
I⁻
which of the following best describes a decomposition reaction?
a. two substances combine to form a single new substance
b.two substances recombine to form two new substances
c. one element takes place of another in a compound
d. a single substance breaks down
Answer:
d.
Explanation:
because its right :)
The statement among the following which best describes a decomposition reaction is a Single complex substance breaks down in to two or more simpler substances.Hence, Option (D) is correct.
What is Decomposition Reaction ?Chemical decomposition, or chemical breakdown, is the process or effect of simplifying a single chemical entity into two or more fragments.
Chemical decomposition is usually regarded and defined as the exact opposite of chemical synthesis.
Therefore, The statement among the following which best describes a decomposition reaction is a Single complex substance breaks down in to two or more simpler substances.Hence, Option (D) is correct.
Learn more about Decomposition reaction here ;
https://brainly.com/question/8009068
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what mineral is least important to plant growth
a. Nitrogen
b. Phosphorus
c. Potassium
d. Sodium
Answer:
sodium
Explanation:
nitrogem, phosphorous and potassium are very important to plant growth, but sodium isnt necessary.
Answer:
the answer is sodium hope this helps
What do electric conducts and thermal conducts have in comman?
Usually electrical conductors have loosely bound electrons. Materials that conduct heat are thermal conductors
which metal can be obtain from calvertie ores?
Answer:
Ore
hope this helps
thanks for the points
A. 207 kJ
B. 4730 kJ
C. 9460 kJ
D. 414 kJ
Answer:
Q = 9460 Kj
Explanation:
Given data:
Mass of copper = 2kg
Latent heat of vaporization = 4730 Kj/Kg
Energy required to vaporize 2kg copper = ?
Solution:
Equation
Q= mLvap
It is given that heat required to vaporize the one kilogram copper is 4730 Kj thus, for 2 kg
by putting values,
Q= 2kg × 4730 Kj/Kg
Q = 9460 Kj
Jordan places a hot spoon into a container of ice
cream. How does this help him scoop out the ice
cream?
Answer:
It melts some of the ice cream and it makes it easier for him to scoop the ice cream out
Explanation:
In the ground state, all of the atoms of Period 3 elements have the same
A) atomic number
B) number of oxidation states
C) number of occupied energy shells
D) atomic mass
Answer:
C) number of occupied energy shells
Explanation:
Atomic numbers of different elements must differ, as well as atomic masses. The number of oxidation states differs per atom as well.
what is dark matter
can we travel faster than speed of light
what is chlorophyll
Answer:
Explaining dark matter and black holes
Here are six big questions about our universe that current physics can’t answer:
What is dark energy, the mysterious energy that appears to be accelerating the expansion of the universe?
What is dark matter, the invisible substance we can only detect by its gravitational effect on stars and galaxies?
What caused inflation, the blindingly fast expansion of the universe immediately after the Big Bang?
For that matter, what caused the Big Bang?
Are there many possible Big Bangs or universes?
Is there a telltale characteristic associated with the death of a universe?
Despite the efforts of some of the world’s brightest brains, the Standard Model of particle physics – our current best theory of how the universe works at a fundamental level – has no solution to these stumpers.
A compelling new theory claims to solve all six in a single sweep. The answer, according to a paper published in European Physical Journal C by Herb Fried from Brown University and Yves Gabellini from INLN-Université de Nice, may be a kind of particle called a tachyon.
Tachyons are hypothetical particles that travel faster than light. According to Einstein’s special theory of relativity – and according to experiment so far – in our ‘real’ world, particles can never travel faster than light. Which is just as well: if they did, our ideas about cause and effect would be thrown out the window, because it would be possible to see an effect manifest before its cause.
Alt
Explanation:
Due to travelling faster than light, dark matter has a higher than usual mass in relation to its resting mass, thus accounting for the large 'missing' mass around galaxies. ... Dark matter is therefore non-baryonic, travelling faster than light and has a mass half that of a photon...
bts army forever.....vzgGgzs0
.......JK
.....justin bieber
The length of a year is equivalent to the time it takes for one.. (pls help I honestly forgot )
In your home, you can turn off your television set but all of your other appliances will stay on. This is because the appliances in your home are connected *
in series
in parallel
Well
Together
Answer:
in parallel
Explanation:
All of the home equipment in the residence are linked in parallel.
Are domestic appliances linked in collection or parallel?parallel association
electric appliances are connected in a parallel arrangement in a house circuit because every appliance gets complete voltage as resistance in a parallel association is low.
Why are electrical appliances in our household no longer connected in collection?electric appliances are not linked in series because the cutting-edge can be the same thru all the home equipment connected but voltage increases if extra no. Of appliances are related. If the battery has low voltage than the full voltage it can short circuit.
research greater approximately the parallel.
Learn more about parallel circuit
here:https://brainly.com/query/12069231
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Can someone answer this for me?
Answer: The moles of nitrogen dioxide produced are 96.3
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.
To calculate the moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given volume}}{\text {Molar volume}}=\frac{3714L}{22.4L}=165.8moles[/tex]
[tex]4NH_3(g)+7O_2(g)\rightarrow 4NO_2(g)+6H_2O(g)[/tex]
According to stoichiometry:
7 moles of oxygen [tex](O_2)[/tex] produce = 4 moles of nitrogen dioxide [tex](NO_2)[/tex]
Thus 168.5 moles of oxygen [tex](O_2)[/tex] will produce = [tex]\frac{4}{7}\times 168.5=96.3[/tex] moles of nitrogen dioxide [tex](NO_2)[/tex]
ygyjhu went to the store and bumped into afghsiugshjkds
Answer:
well dont hurt yourself
Explanation:
its not very good to
If a cake recipe requires 25g of sugar, how much sugar will the baked cake contain
In the above picture a solid aluminium rod is being heated by a flame. Explain the main reason why Glob
of wax A melts first.
TE from the candle moves through the air and Glob A feels the heat first
TE from the candle transfers particle to particle by touch through the rod to the wax
TE from the candle is carried by particles as they flow though the rod to the wax.
TE travels up as heat rises to the wax
Answer:
TE from the candle is carried by particles as they flow though the rod to the wax.
Explanation:
Can someone solve this for me I'm confused.
Answer:
310.53 g of Cu.
Explanation:
The balanced equation for the reaction is given below:
CuSO₄ + Zn —> ZnSO₄ + Cu
Next, we shall determine the mass of CuSO₄ that reacted and the mass Cu produced from the balanced equation. This can be obtained as follow:
Molar mass of CuSO₄ = 63.5 + 32 + (16×4)
= 63.5 + 32 + 64
= 159.5 g/mol
Mass of CuSO₄ from the balanced equation = 1 × 159.5 = 159.5 g
Molar mass of Cu = 63.5 g/mol
Mass of Cu from the balanced equation = 1 × 63.5 = 63.5 g
Summary:
From the balanced equation above,
159.5 g of CuSO₄ reacted to produce 63.5 g of Cu.
Finally, we shall determine the mass of Cu produced by the reaction of 780 g of CuSO₄. This can be obtained as follow:
From the balanced equation above,
159.5 g of CuSO₄ reacted to produce 63.5 g of Cu.
Therefore, 780 g of CuSO₄ will react to produce = (780 × 63.5)/159.5 = 310.53 g of Cu.
Thus, 310.53 g of Cu were obtained from the reaction.
Hi can anyone answer these two distance and time questions
if you have 30% of 100 milliliters of an aqueous solution of ethanol, what volumes of ethanol and water are in the solution?
Volumes of ethanol and water are in the solution : 30 mL and 70 ml
Further explanationThe concentration of a substance can be expressed in several quantities such as moles, percent (%) weight/volume,), molarity, molality, parts per million (ppm) or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.
Percent Volume (% v/v) : volume (ml) of solute/100 ml of solution ⇒ ratio of volume of the solute to total volume of the solution
[tex]\tt \%solute=\dfrac{solute~volume}{solution~volume}\times 100\%[/tex].
30% ethanol ⇒30% etanol, 70% water
In 100 mL solution :
[tex]\tt Ethanol=30\%\times 100~mL=30~mL\\\\Water=70\%\times 100~mL=70~ml[/tex]