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jek_recluse [69]
3 years ago
13

Which element has six energy levels?

Chemistry
2 answers:
malfutka [58]3 years ago
4 0
The energy level is the electron cloud number and only Cesium is large enough to have electrons in its sixth shell. Thus,
the answer is B.
NARA [144]3 years ago
3 0
Answer:    B) cesium (Cs)
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URGENT!!-- Please help!
blondinia [14]

Moles of gas = 0.369

<h3>Further explanation</h3>

Given

P = 2 atm

V = 5.3 L

T = 350 L

Required

moles of gas

Solution

Ideal gas Law

\tt n=\dfrac{PV}{RT}\\\\n=\dfrac{2\times 5.3}{0.082\times 350}\\\\n=0.369

Avogadro's law : at the same temperature and pressure, the ratio of gas volume will be equal to the ratio of gas moles  

moles of O₂ = 45% x 0.369 = 0.166

moles of Ar = 12% x 0.369 = 0.044

moles of N = 43% x 0.369 = 0.159

3 0
2 years ago
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8 0
3 years ago
Why is beryllium-8 different from beryllium-9 in terms of the nuclear particles?
Helen [10]

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:

6 0
3 years ago
Methanogens are able to live in an ________ environment. extremely acidic. extremely salty. extremely hot or anaerobic.
vredina [299]
Anaerobic ............................................
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2 years ago
When you throw a ball your hand applies ____ to the ball.
Gelneren [198K]

Answer:

2.force

Explanation:

6 0
3 years ago
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