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PtichkaEL [24]
3 years ago
6

During a hurricane, what effect can the ocean have on the beach?

Chemistry
1 answer:
Katen [24]3 years ago
4 0
C is the answer I’m pretty sure
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Which observation about methane (ch4) can be explained using the orbital hybridization theory?
MissTica
<span>All 4 C-H bonds are identical.

Hybridisation or hybridization is the idea of blending atomic orbitals into new hybrid orbitals, with various energies, shapes, and so on, than the component atomic orbitals, appropriate for the matching of electrons to make chemical bonds in valence bond theory.
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7 0
3 years ago
Julie finds a snail on the sidewalk and wants to know whether or not the snail moves throughout the day. She places a single mar
dexar [7]

Answer:

b-acting as a standard unit of measure

Explanation:

8 0
3 years ago
Read 2 more answers
A thermally isolated system is made up of a hot piece of aluminum and a cold piece of copper; the aluminum and the copper are in
Illusion [34]

Answer:

  • <u>Copper</u><em> is the object that experiences the greater temperature change.</em>

Explanation:

<em>Thermally isolated system </em>means that the system does not exchange thermal energy with the surroundings.

Hence, any thermal exchange, in virtue of the temperature difference of the aluminum and copper pieces, is between them.

In consequence, the law of conservation of energy states that the heat lost by the hot substance will be gained by the cold matter.

In equations, that is:

  • Heat lost by aluminum = heat gained by copper.

Now, the gain or loss or heat of a substance, Q, is related with the mass (m), the specific heat (Cs), and the cahnge of temperature (ΔT), per the equation:

  • Q = m × Cs × ΔT

∴ Q lost by aluminum = Q  gained copper ⇒

  • [m × Cs × ΔT ] aluminum = [m × Cs × ΔT ] copper.

Under the reasoning assumption that the masses of aluminum and copper are equal, the equations is simplified to:

  • [Cs × ΔT ] aluminum = [Cs × ΔT ] copper.

  • Cs aluminum / Cs copper = ΔT copper / ΔT aluminum

  • Cs aluminum > 2 × Cs copper  ⇒ Cs

  • Cs aluminum / Cs copper > 2 ΔT copper / ΔT aluminum

  • ΔT copper / ΔT aluminum > 2

  • ΔT copper > 2 × ΔT aluminum

In words, since it is stated that  the specific heat of aluminum is more than double that of copper,  in order to keep the equality, ΔT of copper shall be more than double ΔT of aluminum.

Hence, the <u>conclusion</u> is that the object that experiences the greater temperature change is copper (the one with the lower specific heat), under the assumption that both objects have the same amount of matter (mass).

6 0
3 years ago
BRAINLIESTT ASAP! PLEASE HELP ME :)<br><br> Compare stored mechanical energy and mechanical energy.
UNO [17]

Stored mechanical energy is energy stored and awaiting to be used and mechanical energy is the energy that was stored being used.

6 0
3 years ago
The thallium Subscript 81 Superscript 208 Baseline Tl nucleus is radioactive, with a half-life of 3.053 min. At a given instant,
Genrish500 [490]

Answer: (E) 300 bq

Explanation:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

Radioactive decay process is a type of process in which a less stable nuclei decomposes to a stable nuclei by releasing some radiations or particles like alpha, beta particles or gamma-radiations. The radioactive decay follows first order kinetics.

Half life is represented by t_{\frac{1}{2}

Half life of Thallium-208 = 3.053 min

Thus after 9 minutes , three half lives will be passed, after ist half life, the activity would be reduced to half of original i.e. \frac{2400}{2}=1200, after second  half life, the activity would be reduced to half of 1200 i.e. \frac{1200}{2}=600,  and after third half life, the activity would be reduced to half of 600 i.e. \frac{600}{2}=300,

Thus the activity 9 minutes later is 300 bq.

7 0
3 years ago
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