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ra1l [238]
3 years ago
10

Why is beryllium-8 different from beryllium-9 in terms of the nuclear particles?

Chemistry
1 answer:
Helen [10]3 years ago
6 0

Answer:

Beryllium-8 (8Be, Be-8) is a radionuclide with 4 neutrons and 4 protons. It is an unbound resonance and nominally an isotope of beryllium. It decays into two alpha particles with a half-life on the order of 10−16 seconds; this has important ramifications in stellar nucleosynthesis as it creates a bottleneck in the creation of heavier chemical elements. The properties of 8Be have also led to speculation on the fine tuning of the Universe, and theoretical investigations on cosmological evolution had 8Be been stable.

Explanation:

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What is the solute when stirring salt in water until the salt disappears?
Umnica [9.8K]

Answer:

The solute is the substance being dissolved.

The solvent is the substance dissolving the solute.

Therefore, the salt is the solute and the water is the solvent.

Explanation:

The salt is the solute.

3 0
2 years ago
A sample of gas contains 3.0L of nitrogen at 320kPa. What volume would be necessary to decrease the pressure at 110kPa
Phoenix [80]

Answer:

V_{2} = 8.92 L

Explanation:

We have the equation for ideal gas expressed as:

PV=nRT

Being:

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n = molar number

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T = Temperature

From the statement of the problem I infer that we are looking to change the volume and the pressure, maintaining the temperature, so I can calculate the right side of the equation with the data of the initial condition of the gas:

P_{1} V_{1} =nRT

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1000L = 1m^{3}

So

nRT= 0.96

Now, as for the final condition:

P_{2}V_{2}=nRT

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clearingV_{2}

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6 0
3 years ago
Gregor Mendel identified seven distinguishable individual __________________________Each one he discovered had two different for
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Answer:

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________ are molecules whose general structure includes a central carbon with a carboxyl group, an amine group, a hydrogen molec
IgorLugansk [536]

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5 0
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Answer:

a) a space in an atom where an electron is most likely to be found

Explanation:

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Option A best describes atomic orbital.

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