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sdas [7]
3 years ago
9

can someone answer! please don't answer for points or if you don't know it and don't answer if you are guessing make sure you un

derstand and show proof for brainliest.

Chemistry
2 answers:
inessss [21]3 years ago
8 0

Answer:

B

Explanation:

As the distance between the planets and the sun increases, the period of revolution increases as well. The period of revolution is how long it takes for a planet to revolve around the sun. So, because the planets farther from the sun have a higher period of revolution in earth years, this also means they have longer actual years, which means the answer is B.

Vesna [10]3 years ago
3 0

Answer:

the answer is B

Explanation:

look at the table. the closest planet Mercury is 58,000,000 kilometers from the sun, and the furthest Neptune is 4,498,000,000 kilometers from the sun. however, mercury takes 0.24 earth years to make a full rotation, and Neptune takes 165.00 earth years to. so the closer a planet is to the run, the faster its days are

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The product of the nuclear reaction in which 40Ar is subjected to neutron capture followed by alpha emission is ________. The pr
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Answer:

37S

Explanation:

Radioactivity is the spontaneous emission of particles and / or electromagnetic radiation by unstable atomic nuclei leading to their disintegration.

We have two main types of radioactivity: radioactive decay and artificial transmutation.

In radioactive decay ( natural radioactivity ), a naturally occurring radioactive element like Uranium-238 disintegrates or decays into more stable isotopes with the emission of particles and/or radiation.

23892U = 23490Th + 42He

Artificial transmutation is the collision of two particles where one particle captures the other used to bombard it. There is subsequent production of isotopes similar or different from the bombarded particle. Neutrons, alpha particles ( helium nucleus ), electrons, protons can be used to bombard elements.

147N + 42He = 178O + 11P

For the above question which is artificial transmutation, the reaction equation is

4018Ar + 10n = 3716S + 42He

So, the neutron capture by Argon-40 will produce a radioisotope Sulphur-37 with the emission of an alpha particle.

5 0
3 years ago
Which of the following variables has the least effect on the rate a substance dissolved in a container of water?
Lelechka [254]
I think it’s A. The force of the stirring
4 0
3 years ago
For the reaction 3ZnCO3 + 2H3PO4 —> 3H2O + 3CO2, how many miles of zinc carbonate are required to produce 3.0 mil of Zn3(PO4)
drek231 [11]

Answer:

\boxed{ \text{9.0 mol of ZnCO$_{3}$}}

Explanation:

(a) Balanced equation

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(b). Calculation

You want to convert moles of Zn₃(PO₄)₂  to moles of ZnCO₃

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\text{Moles of ZnCO$_{3}$} =\text{3.0 mol Zn$_{3}$(PO$_{4})_{2}$ } \times \dfrac{\text{3.0 mol ZnCO$_{3}$}}{\text{1 mol Zn$_{3}$(PO$_{4}$)$_{2}$}} \\\\\\= \text{9.0 mol ZnCO$_{3}$}

You need \boxed{ \textbf{9.0 mol of ZnCO$_{3}$}} to form 3.0 mol of Zn₃(PO₄)₂.

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3 years ago
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Sergeu [11.5K]

Answer:

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Explanation:

4 0
3 years ago
I need help asap thank u
UNO [17]
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