How many electron shells/orbitals will be around the nucleus of an atom of aluminum?

2 answers:

7 0

C.
There is 13 electrons in a aluminum atom. Looking at the picture, you can see there are two electrons in shell one, eight in shell two, and three in shell three.

Romashka-Z-Leto [24]3 years ago

6 0

C would be the correct answer I believe

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Unless the gasoline tank of a car is refilled, the car will stop moving when it runs out of gas. What happened to the energy tha

GaryK [48]

Answer: The correct answer is option d.

Explanation: Energy stored into gasoline is converted into another form of energy. This was very well explained on the basis of Law of conservation of energy. This law states that energy is conserved in the system which means that energy is converted from one form to another form.

The energy stored into gasoline is converted into mechanical energy which helps the car to move and some of the energy is lost in the form of heat.

Hence, the correct answer is Option d.

3 0

3 years ago

A mixture of so2(g) and o2(g), formed by the complete decomposition of so3(g), is collected over water at 34°c at a total pressu

Sedbober [7]

The decomposition of so3 to so2 gas and o2 gas can be described in the balanced chemical equation:

2so3(g) = 2 so2 (g) + 02(g).

so assuming a complete reaction, the ratio of so2 gas to total products is 2/3 while that of 02 is 1/3.

Subtracting water's water vapor pressure, 760-40 mm hG = 720 mm Hg.

then the products partial pressures are

so2 = 2/3 * (720) = 480 mm Hg.
o2 = 720-480 = 240 mm Hg.

8 0

3 years ago

Which statement related to particle and wave properties of matter is correct? a. Interference patterns are observed when a wave

DerKrebs [107]

Answer:

a. Interference patterns are observed when a wave passes through a barrier with two slits

Explanation:

Interference is a situation where two waves superimpose to form a new wave of a different amplitude. This amplitude can be greater, same or lower.

the diagram attached below shows the movement of a wave through a barrier with two slits.

you can notice the portions of the wave that overlap. This overlapping of waves is the interference.

Thus, option A is correct.

The other options however, are not correct. as shown below:

Option B is wrong as waves exhibit diffraction (it is diffraction of the light wave that produces the rainbows we see in the sky)

Option C is wrong as waves do not travel straight through slits always.

Option D is wrong as waves can also interfere constructively and destructively.

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4 years ago

If a star is shown ti be 33.11 trillion killometers away , how many light year would that be

adoni [48]

Use proportions.

1 lightyear = 9.4605284 trillion kilometers
x light years ≈ 33.31 trillion kilometers

33.31/9.46 = x/1
3.50 ≈ x

8 0

3 years ago

If the temperature of an object is 335 K, how would this be expressed on the Celsius scale?

Arturiano [62]

C it the correct answer

5 0

3 years ago