A green leaf has a surface area of 2.50 cm2. If solar radiation is 1000 W/m2, how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 nm for solar radiation.

Q: A heat lamp produces 22.5 watts of power at a wavelength of 7.0 μm . How many photons are emitted…

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Q: a frequency of 30 Hz .  What is the wavelength of this radiation in meters?

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: Place the following types of radiation in order of increasing wavelength by numbering them from 1…

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Q: Is it possible for a fluorescent material to emit radiation in the ultraviolet region after…

A: Given : Is it possible for a fluorescent material to emit radiation in the ultraviolet region after…

Q: In a hydrogen atom, an electron loses energy from n = 5 to n = 2, a process that leads to some kind…

A: The formula used to calculate energy of line spectrum of hydrogen atom. RH is the Rydberg constant.…

Q: What is the wavelength of microwave radiation whose frequency is 1.395 x 10 10/s?

A: Given Data:  microwave radiation Frequency = fmw=1.395 x 10 10/s?  Wavelength= ?

Q: Consider a cellphone operating at the radio frequency of 2.99 x 10s!. What is the wavelength of the…

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Q: List the following three types of electromagnetic radiation-visible, gamma rays, and microwaves in…

A: Electromagnetic radiation is classified into types according to the frequency or wavelength of the…

Q: At a given point in its orbit, the moon is 2.4 x 105 miles from earth.  How long does it take light…

A: Given : Distance between earth and moon = 2.4 X 105 miles. And the speed of light = 3.0 X 108 m/s.

Q: Calculate the frequency of light that has a wavelength of 35.5 nm. x 10 Hz What type of radiation is…

A: Given data wavelength = 35.5 nm

Q: Water is exposed to infrared radiation of wavelength 2.8×10−4 cm . Assume that all the radiation is…

A: Given data, wavelength (λ)=2.8×10-4cmMass of water=2.1g∆T=2.3KCwater=4.184J/g.K

Q: What is the wavelength of radiation that has a frequency of 6.3×1011 s−1s−1 ?         Express the…

A: Given that:  Frequency = 6.3×10-11 s-1 Wavelength = ?

Q: The microwave from the introduction emits radiation at 2,450 MHz. You want to make a mug cake after…

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Q: A 493 g portion of soup is heated in a microwave oven from 25.0°C to 90.0°C, using radiation with a…

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Q: calculate the wavelength of light in nanometers that corresponds to a frequency of 7.25 x 10^14 Hz

A: Given:  Frequency of light, v = 7.25 × 1014 Hz  Formula used:  Wavelength of light = speed of light…

Q: A person does not apply sunscreen and has 0.43 m2m2 of skin exposed to the sun for 1.00 hh.…

A: Energy of photon = hcλ  = 6.63×10-34×3×108320×10-9 = 6.216×10-19 J/photon   Area of the skin = 0.43…

Q: A photon of blue light has a frequency of 6.20 x 10¹4 Hz. Calculate the wavelength of this photon (c…

A: Frequency is inversely proportional to wavelength

Q: Which of the following types of radiation has the greatest frequency? Microwaves, Ultraviolet,…

A: X-rays has Highest frequency in given radiations and  hence has highest energy .

Q: Arrange the following kinds of electromagnetic radiation in order of increasing wavelength:…

A: As the energy of the photon is increases, then the wavelength of light is decreases.            E =…

Q: A container with 0.2450.245 L of water is placed in a microwave and radiated with electromagnetic…

A: Since the energy required for increasing the temperature of water by 69.9 °C is given by  Q = mCpΔT…

Q: 10. What is the wavelength of a 109.6 MHz (Megahertz or 10^6Hz) wave?

A: Given,           C = λ υ           E = h υ = hcλ          C = 3.00 x 108 m/s          h = 6.626 x…

Q: number of photons

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Q: A liquid is exposed to infrared radiation with a wavelength of 3.10 × 10–4 cm. Assume that all the…

A: Recall the following relation to calculate number of photons         E=nhν        E=nhcλWhere,…

Q: Suppose an oven's radiation wavelength is 0.125 m. A container with 175.00 g of water was placed in…

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Q: Microwave ovens use microwave radiation to heat food. The energy of the microves is absorbed by…

A: 1.To calculate the energy of a photon with a wavelength of 11.2cm, use the Energy relation:

Q: Light in the infrared portion of the electromagnetic spectrum excites vibrations of certain…

A: Given: power = 1000 mW wavelength = 808 nm volume of water = 50.0 mL initial temperature = 22.0 oC…

Q: A 437 g portion of soup is heated in a microwave oven from 25.0°C to 90.0°C, using radiation with a…

A: Given,  Mass of the Soup = 437g grams Initial Temperature of the Microwave Oven, Ti = 25. 0°C Final…

Q: An x-ray has a wavelength of 6.88 nm. Calculate the energy of one mole of photons of this radiation…

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Q: wavelength

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Q: A liquid is exposed to infrared radiation with a wavelength of 2.97 x 10 cm. Assume that all the…

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Q: The flux of solar energy reaching the Earth’s surface is approximately 7J/cm2. Assume that all of…

A: The maximum efficiency is 35%. Surface area of leaf is 10 cm2  Amount of solar energy is 7J/cm2  The…

Q: 9. A few people in your neighborhood are protesting the erection of a 5G cell tower. They claim the…

A: Cell towers emerging now a days has a lot of health hazards associated with it due to the release of…

Q: Most remote controllers for AV equipment emit radiation with the wavelength profile shown in the…

A: Energy of a photon can be calculated by using the formula :                              E=hcλWhere…

Q: The ultraviolet spectrum can be divided into three regions based on wavelength: UV-A (315–400 nm),…

A: Ultraviolet radiations are considered particularly harmful to the Environment. They are classified…

Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.