Electrons absorb energy, as they absorb energy they go from ground state to excited state and to return to ground state electrons release energy in the form of photons producing that color.
D. The average kinetic energy increases, and the particles collide more frequently.
Explanation:
When the temperature of a gas is increased, the average kinetic energy increases and the particles collide more frequently with one another and the walls of the container.
- The temperature of a gas is a measure of the average kinetic energy of the molecules.
- When temperature increases, the frequency of ordinary and effective collision increases per unit time.
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Kinetic energy of gases brainly.com/question/7966903
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Basically, every moles of H2O has around 6.022 x 10^23 Molecules
So for 2.00 moles, the amount of molecules would be :
2x 6.022 x 10^23
= 12.044 x 10^23
Answer:
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The
equation for the photosynthesis reaction in which carbon dioxide and water
react to form glucose is .
The hear reaction is the difference between the bond dissociation energies in
the products and the bond dissociation energies of the reactants
The
reactant molecules have 12 C = O, 12 H - O bonds while the product molecules
have 5 C - C, 7 C – O, 5 H – O, and 6 O = O bonds. The average bond
dissociation energies for the bonds involved in the reaction are 191 for C = O,
112 for H – O, 83 C –C, 99 C – H, 86 C – O, 119 O = O.
Substitute
the average bond dissociation energies in the equation for and
calculate as follows
=
[12 (C=O) + 12 (H-O)] – [5(C-C) + 7(C-H) + 7 (C-O) + 5(H-O) + 6(O=O)]
=
[12x191 kcal/mol + 12x112 kcal//mol] – [5x83 kcal/mol + 7x99 kcal/mol + 7x86
kcal/mol + 5x112 kcal/mol + 6x119 kcal/mol]
=
3636 kcal/mol – 2984 kcal/mol = 652 kcal/mol x 4.184 Kj/1kcal = 2.73x10^3 kJ/mol
So,
enthalpy change for the reaction is 652 kcal/mol or 2.73x10^3 kJ/mol
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