Answer:
f = 4.6 × 10¹⁴ Hz
Explanation:
Given data:
Wavelength of light = 6.50x10^-7m
Speed of light = 3.00 x 10^8 m/s
Frequency of light = ?
Solution:
Formula:
Speed of radiation = frequency × wavelength
by putting values,
3×10⁸ m/s = f × 6.50x10^-7m
f = 3×10⁸ m/s / 6.50x10^-7m
f = 0.46 × 10¹⁵ s⁻¹
f = 0.46 × 10¹⁵ Hz
f = 4.6 × 10¹⁴ Hz
Kp/Kc for reaction for the equilibrium, A(g) ⇌ C(g)+B(g), is _______.
(Kc is the equilibrium constant in terms of concentrations, Kp is the equilibrium constant in terms of pressures, R is the gas constant, T is the temperature)
Select one:
(RT)2
(RT)-1
(RT)-2
(RT)-1.5
RT
Kp/Kc = RT
Further explanationGiven
Reaction
A(g) ⇌ C(g)+B(g)
Required
Kp/Kc
Solution
For reaction :
pA + qB ⇒ mC + nD
[tex]\large {\boxed {\bold {Kc ~ = ~ \frac {[C] ^ m [D] ^ n} {[A] ^ p [B] ^ q}}}}[/tex]
While the equilibrium constant Kp is based on the partial pressure
[tex]\large {\boxed {\bold {Kp ~ = ~ \frac {[pC] ^ m [pD] ^ n} {[pA] ^ p [pB] ^ q}}}}[/tex]
The value of Kp and Kc can be linked to the formula '
[tex]\large {\boxed {\bold {Kp ~ = ~ Kc. (R.T) ^ {\Delta n}}}}[/tex]
R = gas constant = 0.0821 L.atm / mol.K
Δn=moles products - moles reactants or
number of product coefficients-number of reactant coefficients
For reaction :
A(g) ⇌ C(g)+B(g)
number of product coefficients = 1+1=2
number of reactant coefficients = 1
Δn= 2 - 1 =1
So Kp/Kc = RT
An idea based on observations with no experimental evidence is a:
What is the definition of an atmosphere? a portion of the electromagnetic spectrum that makes the sky look blue the blanket of gases that surrounds Earth and some other planets an area above Earth that scatters sunlight into all colors of the rainbow
Answer:
the blanket of gases that surrounds Earth and some other planets
Explanation:
The best definition of the atmosphere is that it is a portion of the earth that is a made up of a blanket of gases.
The atmosphere is not peculiar to the earth alone, some other planets also have atmospheric cover. The earth's atmosphere is divided into many different layers. The weather we see and experience on the earth surface is conditioned within the troposphere. This troposphere is the closest layer to the surface.What is MnF3 + AL ? If anyone would
Be so kind
The table below shows properties of two compounds at standard pressure. Which statement classifies the two compounds? 1)Both compounds are ionic, 2)Both compounds are molecular, 3) Compound 1 is ionic, and compound 2 is molecular, 4)Compound 1 is molecular, and compound is ionic
Answer:
3) Compound 1 is ionic, and compound 2 is molecular
Explanation:
Compound-1 is an ionic compound while Compound-2 is a molecular compound. Option 3 is correct.
Ionic Compound:
They are formed when an atom donates its electron to another atom. This results in one positive and one negative ion.
Hence, it is a very strong bond. These compounds have a very high melting and boiling point. They are very good electric conductors in the aqueous solution.
For example- NaCl.
Molecular compounds:
They are compounds that are made up of discrete molecular units. For example- [tex]\bold {H_2O}[/tex]
They have very weak intermolecular bonds hence have low boiling and melting point and do not conduct electricity.
SInce Compound-1 has higher MP and BP and Compound-2 has low melting and boiling point.
Therefore, Compound-1 is an ionic compound while Compound-2 is a molecular compound.
To know more about Ionic Compound:
https://brainly.com/question/9167977
How is the temperature scale different than a typical thermometer?
air is trasferred from 75 L tank where the pressure is 125 psi and the temperature is 288 K to a tire with a volume. of 6.1 L and a pressure of 25 psi. what is the new temperature ?
Answer:
4.7K
Explanation:
Given parameters:
Initial volume = 75L
Initial pressure = 125psi
to atm gives 8.5atm
Initial temperature = 288K
New volume = 6.1L
New pressure = 25psi
to atm gives 1.7atm
Unknown:
New temperature = ?
Solution:
To solve this problem, we use the combined gas law which is given below:
[tex]\frac{P1 V1}{T1}[/tex] = [tex]\frac{P2 V2}{T2}[/tex]
P, V and T are pressure, volume and temperature
1 and 2 are initial and new states
[tex]\frac{8.5 x 75}{288}[/tex] = [tex]\frac{1.7 x 6.1}{T2}[/tex]
T2 = 4.7K
matter can undergo chemical reactions and nuclear reactions. which properly is conserved in nuclear reactions?
Answer:change in number of atoms
Explanation:AP3X
What do most mollusks have?
C
Answer:
C- A foot
Particularly a muscular foot.
Answer/Explanation
you"re right they have a foot
Muscular foot for creeping or burrowing. Some also have a head with sense organs.
did u need someone to confirm it or what
Jill graphs the speed of a model train that is travelling at a speed of 15 kilometers per hour. Which graph shows the speed of the model train?
Answer:c
Explanation:
How many parents does asexual reproduction involve?
Answer:
only 1 parent is needed! and the offspring is a identical copy of the parent
8. How many moles of carbon dioxide are there in 52.06 g of carbon dioxide?
A) 0.8452
B) 1.183
C) 6.022 x 1023
D) 8.648 x 1023
E) 3.134 x 1025
Answer:
B) 1.183
Explanation:
To convert from grams (mass) to moles, we need to divide by the atomic mass (amu)..
The amu of [tex]CO_{2}[/tex] is 44.008
52.06/44.08 = 1.182966733
This can be rounded to 1.1830 moles of CO2
1.183 moles of carbon dioxide are there in 52.06 g of carbon dioxide.
Explanation:
Moles of substance are defined ratio of the given mass of the substance to the molar mass of the substance.Given :
The 52.06 grams of carbon dioxide.
To find :
The moles of carbon dioxide.
Solution:
The mass of carbon dioxide = 52.06 g
The molar mass of carbon dioxide = 44.01 g/mol
The moles of carbon dioxide:
[tex]=\frac{52.06 g}{44.01 g/mol}=1.183 mol[/tex]
1.183 moles of carbon dioxide are there in 52.06 g of carbon dioxide.
Learn more about the number of moles here:
brainly.com/question/16192776?referrer=searchResults
brainly.com/question/2293228?referrer=searchResults
Select the correct balanced equation for the single displacement reaction of bromine and potassium iodine.
Br + Kl -> KBr +1
Answer:
D
D...............DDDDDDD
Answer: D
Explanation:
The answer is D as it is the only correctly balanced equation.
HELPPP PLEASE
Calculate the mass of beryllium (Be) needed to completely react with 18.9 g nitrogen gas (N2) to produce Bez N2, which is the only product of the reaction.
A. 6.19
B. 12.29
C. 18.29
D. 36.69
Answer:
Mass = 18.29 g
Explanation:
Given data:
Mass of beryllium needed = ?
Mass of nitrogen = 18.9 g
Solution:
Chemical equation:
3Be + N₂ → Be₃N₂
Number of moles of nitrogen:
Number of moles = mass/molar mass
Molar mass of nitrogen = 28 g/mol
Number of moles = 18.9 g/ 28 g/mol
Number of moles = 0.675 mol
Now we will compare the moles of nitrogen and Be.
N₂ : Be
1 : 3
0.675 : 3/1×0.675 = 2.03 mol
Mass of Be:
Mass = number of moles × molar mass
Mass = 2.03 mol × 9.01 g/mol
Mass = 18.29 g
What is the frequency of a photon that has a wavelength of 6.58 x 10-8m?
Answer:
6 x 10 (power to the 15) H2
Answer:
i dont know the answer but you could search up photon calculator, hope this helps (im very sorry i couldnt help but i havent learned about that yet, im in 9th grade)
Leopard seals are animals adapted to survive in the freezing conditions of Antarctica. Individual leopard seals vary in their different traits.
Which of the following variations would give a leopard seal the greatest chance of surviving in its harsh environment?
A. More spots on its coat. B. Thicker layer of blubber
C. More elongated head
D. Wider, flatter teeth
Answer:
B. Thicker layer of blubber
Explanation:
For the leopard seals to survives this harsh environment, it must have a thicker layer of blubber
Blubber is a thick layer of fat. It is called the adipose tissues and found in most marine organisms.
This layer helps in insulating the body against heat loss. By so doing, the animal is able to conserve internal heat. They have low thermal conductivity and do not easily lose heat or gain heat as such.Answer:
B
Explanation:
A parallel circuit contains four identical lamps. The current through the energy source is 4 A. The total resistance of the circuit is 10 Ω. What is the voltage across the energy source and across each lamp
Answer:
a parallel circuit has two or more paths for current to flow through voltage is the same across each component of the parallel circuit the sum of the current through each path is equal to the total current that follows from the source another definition is in a parallel circuit all components are connected across each other formally exactly two sets of electricity common points a branch in a parallel circuit in a path of electricity current formed by one of the load component
What is creating our Earth's Magnetic field?
1) Our Earth's iron liquid outer core rotating around the solid inner core
2) Our Earth having a stationary inner core
3) Our Earth having rocky center
4) All of the above
Answer:
1) Our Earth's iron liquid outer core rotating around the solid inner core
Explanation:
The earth's magnetic field or the geomagnetic field is produced as a result of the earth's iron liquid outer core rotating around the solid inner core.
This produces the earth's magnetic field.
The earth's core is made up of solid and liquid region. Only the densest elements are found within this region. So, the core is made up of metals which are mainly iron and nickel. The outer core is liquid or molten iron and the inner core is solid. The molten iron and nickel in the outer core moves around the inner core and generates the currents which induces a magnetic field round the earth.Which statement best describes the polarity of SF 4 CI 2?
Always polar , always non polar or depending on the arrangement of outer atoms ?
Answer:
use common sense!........
275L/sec to mL/hour with work
Which chemical equation is unbalanced?
C + O2 Right arrow. CO2
Sr + O2 Right arrow. 2SrO
6H2 + 3O2 Right arrow. 6H2O
H2 + H2 + O2 Right arrow. H2O + H2O
Answer:
Sr + 02 Right arrow.2Sr0
Answer:
b
Explanation:
Many organisms on Earth exhibit similar ____________.
Question 1 options:
time
single-celled
characteristics
nonliving
Answer:
characteristics
Explanation:
i promise becasue i am a teacher so i hope you like it
Which change of state involves a release of energy?
Answer: CONDENSATION When steam is cooled, it releases thermal energy and turns into its liquid state. This process is called condensation. reversed if the liquid is cooled. The change from the liquid state to the solid state is called freezing
PLZ HELP ME BEING TIMED!!!!!
PLZ HELP IT BEING TIMED!!!!!! PLZ ANSWER!!!!!
Answer:
YIKES. a bit late. Answers include 1, 2, 3
Explanation:
Measure that affects the thermal energy of matter but not it's temperature.
Answer: mass
Explanation:
What is the kinetic energy of a ball when it stops moving?
Question 2 options:
3
2
1
Answer:0
Explanation:
What are the names of the compounds containing silver?
Show the compound formula and their names. (WRITE CLEARLY AND NEATLY OR THE QUESTION WILL BE CONSIDERED WRONG)
Answer:
the silver compounds include:
silver chloride agcl ,
silver bromide agbr ,
and silver iodide agi.
What is the correct name of CUCIO2
Chemistry
Answer:
Copper(II) Chlorite = Cu(ClO2)
Explanation:
how you write the compound is very important as well
ammonium phosphate is an important ingredient in many solid fertilizers. It can be made by reacting aqueous phosphoric acid with liquid ammonia. Calculate the moles of ammonium phosphate produced by the reaction of 2.4 mol of ammonia. Be sure your answer has a unit symbol, if necessary, and round it to significant digits.
Answer:
0.57 moles (NH4)3PO4 (2 sig. figs.)
Explanation:
To quote, J.R.
"Note: liquid ammonia (NH3) is actually aqueous ammonium hydroxide (NH4OH) because NH3 + H2O -> NH4OH.
H3PO4(aq) + 3NH4OH(aq) ==> (NH4)3PO4 + 3H2O
Assuming that H3PO4 is not limiting, i.e. it is present in excess
1.7 mol NH4OH x 1 mole (NH4)3PO4/3 moles NH4OH = 0.567 moles = 0.57 moles (NH4)3PO4 (2 sig. figs.)"