4 years ago

The electron cloud model describes which of the following?

1 answer:

8 0

1) The trails left by an electron as it moves around the nucleus
The electron model dictates that the electrons have no fixed position so it traces their path.
2) 8
Atomic number is equivalent to proton number
3) Its mass is lowered, but it is still the same element.
The element's identity is due to the number of protons; however, neutrons play a large role in an atom's mass. Thus, the mass will decrease but the element will be the same. Such variants are called isotopes.

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In what unit is formula mass expressed?

Illusion [34]

Italicized lowercase m

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4 years ago

Escriba un poema usando 4 de las siguientes palabras: lluvia, nieve, lluvia, granizo, tornado, huracanes, frente cálido, frente

Artemon [7]

Answer:

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Explanation:

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3 years ago

An air bubble with a radius of 2.5 cm at the bottom of a lake where the temperature is 5.4 0C and the pressure is 3.2atm rises t

olasank [31]

Answer:

3.8 cm

Explanation:

Given data

Initial pressure (P₁): 3.2 atm

Initial volume (V₁): 65 cm³

Volume of a sphere: V = 4/3 × π × r³ = 4/3 × π × (2.5 cm)³ = 65 cm³

Initial temperature (T₁): 5.4°C + 273.15 = 278.6 K

Final pressure (P₂): 1.0 atm

Final volume (V₂): ?

Final temperature (T₂): 25.0°C + 273.15 = 298.2 K

We can find the final volume using the combined gas law.

$\frac{P_{1}\times V_{1}}{T_{1}} =\frac{P_{2}\times V_{2}}{T_{2}}\\\frac{3.2atm\times 65cm^{3} }{278.6K} =\frac{1.0atm\times V_{2}}{298.2K}\\V_{2}=223cm^{3}$