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aivan3 [116]
2 years ago
5

Describe how you could feel weightless on Earth.

Chemistry
1 answer:
Alexeev081 [22]2 years ago
5 0
Gravity is a force that acts between the Earth's mass and the mass of other objects that surround it. ... Astronauts merely feel weightless because there is no external contact force pushing or pulling upon their body. They are in a state of free fall.
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The diameter of a hydrogen atom is approximately 1.06 ✕ 10−10 m, as defined by the diameter of the spherical electron cloud arou
mylen [45]

Answer:

a) 10.0 mm

b) 8.7 x 10¹³ times

Explanation:

Atom diameter = 1.06 x 10⁻¹⁰ m  ________________ 100%

Nucleus diameter = 2.40 x 10⁻¹⁵ m ______________   x

x = 2.26 x 10⁻³ %

The nucleus diameter is equivalent to 2.26 x 10⁻³ % of the total atom size.

a) The Empire State Building model:

1 ft = 304.8 mm

1454 ft = 443179.2 mm

443179.2 mm______ 100%

        y           ______   2.26 x 10⁻³ %

              y = 10.0 mm

In this model,  the diameter of the nucleus would be 10.0 mm.

b) Sphere volume: V =(4 · π · r³ )/3

V atom = (4 . π .( 0.53x10⁻¹⁰)³ )/3

V atom = 6.2 x 10⁻³¹ m³

V nucleus = (4 . π .( 1.2x10⁻¹⁵)³ )/3

V nucleus = 7.2 x 10⁻⁴⁵ m³

V atom / V nucleus = 6.2 x 10⁻³¹ m³ / 7.2 x 10⁻⁴⁵ m³

V atom / V nucleus = 8.7 x 10¹³

The atom is  times 8.7 x 10¹³ larger in volume than its nucleus.        

6 0
3 years ago
Fill the three 3d subshells with the specified number of electrons.
lana66690 [7]

1. 5 electrons.

3d^{5}

  • Therefore, the 3d subshells blanks will be like this:
  • ↑ ↑ ↑ ↑ ↑

2. 6 electrons.

3d^{6}

  • The 3d subshells blanks will be:
  • ↑↓ ↑ ↑ ↑ ↑

3. 7 electrons.

3d^{7}

  • The 3d subshells blanks will be:
  • ↑↓ ↑↓ ↑ ↑ ↑

Hope you could understand.

If you have any query, feel free to ask.

8 0
2 years ago
What is the correct definition of density
BartSMP [9]

Answer: Density is defined as the ratio between mass and volume or mass per unit volume.

Explanation:

3 0
3 years ago
Read 2 more answers
How can professionals increase their levels of stress as a result of personal work habits?
zmey [24]

Answer:

A

Explanation:

Developing work ethics won't lower your stress although it may make your conscience a little happier. Not B

Not C. Procrastinating just makes things harder. The mountain of things to do is not diminishing at all and your stress knows it.

Not D. Although D is the second best answer, setting goals is not really an action. It is a plan for how to work. But it is not work. Still having a goal is useful.

The answer is A. Just keep hitting what you have to do at a steady pace.

8 0
2 years ago
Heat and pressure deep beneath earths surface can change any rock into what?
Alik [6]

Answer:

Metamorphic

Explanation:

Because it describes as a rock framed from other rocks by the action of heat and pressure.

5 0
3 years ago
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