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astraxan [27]
2 years ago
10

“What is the group number for the elements that have a stable number of electrons in their outer energy level?”

Chemistry
1 answer:
Studentka2010 [4]2 years ago
3 0

Answer:

A. 18

Explanation:

Sulfur number sixteen forms a negative

|ω・)

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Suppose that 4.8 L of methane at a pressure
Ghella [55]

Answer:

972.3 Torr

Explanation:

P2=P1V1/V2

You can check this by knowing that P and V at constant T have an an inverse relationship. Hence, this is correct.

6 0
2 years ago
17
leonid [27]

Answer:

Which of the following

properties distinguishes a solution

oversaturated with a dilute?

  • The supersaturated solution is one in which the solvent has dissolved more solute than it can dissolve in the saturation equilibrium.  The solute can be a solid, or a gas. The molecules of the solvent surround those of the solute and seek to open space between themselves to be able to harbor more amount of solute.
  • A dilute solution is a solution that has not reached the maximum concentration of solute dissolved in a solvent. The additional solute will dissolve when added in a dilute solution and will not appear in the aqueous phase.   It is considered a state of dynamic equilibrium where the speeds in which the solvent dissolves the solute are greater than the recrystallization rate.
8 0
3 years ago
What type of rock forms from the cooling of magma below the surface?
wlad13 [49]

It forms an igneous rock

8 0
3 years ago
Calculate the energy difference for a transition in the paschen series for a transition from the higher energy shell n=4. expres
Troyanec [42]
Electrons are orbiting around the nucleus in a specific energy level as described in Bohr's atomic model. There are 7 energy levels all in all; 1 being the strongest and nearest to the nucleus, and 7 being the weakest and farthest away from the nucleus. Electron can transfer from one energy level to another. If it increases energy, it absorbs energy. If it goes down an energy level, it emits energy in the form of light. This light can be measure in wavelength through the Rydberg equation:

1/λ =R(1/n₁² -1/n₂²), where
λ is the wavelength
R is the Rydberg constant equal to 1.097 × 10⁻7<span> per meter
n</span>₁ and n₂ are the energy levels such that n₂>n₁

In the Paschen series is an emission spectrum of hydrogen when the energy level is at least n=4. So, this covers n=4 to n=7.

1/λ =(1.097 × 10⁻7)(1/4² -1/7²)
λ  = 216.57 ×10⁻⁶ m or 216.57 μm
5 0
3 years ago
How to answer this ?
tamaranim1 [39]

Answer:

as follow

Explanation:

2

a acceptor

b Donor electron

3

A. MgBr2 B. Na2O

C. HCl D. AlCl3

E. K3N F. CaS

* the number is under the charactor/atoms

4 0
3 years ago
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