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How many photons at 660 nm must be absorbed to melt 5.0 x 10 x10 g of ice?
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∙ 16y ago
The question is not clear about the amount of ice is not clear
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∙ 6y ago
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How many joules of heat are required to melt 40 kg of ice at 0 dg C?
In order to answer this question, you need the enthalpy of fusion of ice, which is 333.55 J/g (Joules/gram). The enthalpy of fusion is the amount of heat that must be absorbed or lost in order to change physical state. The number of Joules required to melt the ice = enthalpy of fusion of ice x mass of ice. 1 kg = 1000g 40kg x (1000g/1kg) = 40,000g Joules needed to melt the ice = 333.55 J/g x 40000 g = 13342000 J or 1.3342 x 107 J
When light strikes the a material and most of the light is absorbed or reflected what optical must the material have?
true
How do you calculate the mass of light?
light has zero mass. Photons have zero mass. So according to e=mc2 light must also have zero energy. Astonishing how all these photons reach us from all the way across the universe! But all physical things have mass
Could you emit the same amount of light energy per second which must emit more photons per second a source of red light or a source of blue light?
Red light has less energy per photon than blue light, so to get the same energy we would need more red photons.
When an electron gets excited is energy released or absorbed?
To get excited, it must absorb energy. To get back to its ground state, it releases energy.
How many photons must be absorbed to reduce one CO2 in the Calvin Cycle?
8 photons
The heat of fusion for water is the amount of energy that must be absorbed for water to what?
Melt.
What must be absorbed for a solid to melt?
They must gather close together until they can't bunch anymore and then they start to melt because they ran out of space.
What is the heat of fusion for water is the amount of energy that must be absorbed for water to?
Melt.
What happens to electrons when pigments in photo-systems 2 absorb light?
Light or photons are little packets of energy. When this energy is absorbed by an electron it boots the electrons energy and the electron jumps to a higher orbital shell position (which must be vacant of its electron). The electron can only do this when the energy needed for the jump and the energy in the incoming photon match. Thus specific colours of light are absorbed depending on the element present.
Why must food be absorbed?
Food must be absorbed so the body can get all the nutrients from the food.
How much heat energy must be absorbed to completely melt 35 grams of h2o at o degrees?
it will be 11,700J since the formula would be: q=mHf=35g x 334 J/g= 11,700 J
What must happen to a rock for it to become a metamorphic rock?
It must melt.
What intermolecular forces must be overcome to melt solid I2?
To melt solid I2, one must overcome the covalent bonds holding the molecules together.
What must be added to wax to melt?
a heat source.
What must occur for a solid to melt?
Heat... Quite simpleTry it yourself, nothing cant melt without heat
How much heat energy must be absorbed to completely melt 35.0 grams of water at 0 degrees Celsius?
Ice at 0 deg C has a latent heat of melting of 335 kJ/kg. If you have 35 grams (0.035 kg), then it would take exactly 11.725 kJ to melt the ice to get 35 grams of water at 0 deg C.
