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3 years ago

How many gold atoms are in a 1kg gold bar?

Physics

2 answers:

Naya [18.7K]3 years ago

7 0

Answer:

The answer is a 1 kilo gold bar has 32.15 ounces of gold or 1000 grams.

Explanation:

SpyIntel [72]3 years ago

3 0

Answer:

. You use the fact that 1 mole of any substance contains exactly 6.022⋅1023 atoms or molecules of that substance - this is known as Avogadro's number. In your case, 1 mole of gold will have exactly 6.022⋅1023 atoms of gold

Explanation:

Well, what is the molar mass of gold metal?

My (and your!) Periodic Table tells me that it has a molar mass of 196.97∙g∙mol−1.

And so (i) we determine the molar quantity of gold, i.e.

Moles of gold≡1000∙g196.97∙g∙mol−1≡5.077∙mol.

And (ii), since we KNOW that 1∙mol represents 6.02214076×1023 individual items…we take the product….

5.077∙mol×6.02214076×1023∙mol−1≡3.057×1024∙individual gold atoms.

Given that gold is worth $48–30 USD∙g−1 how much is this mass worth? And what is the price for an ATOM of gold?

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One hazard of space travel is debris left by previous missions. there are several thousand objects orbiting earth that are large

iren2701 [21]

The chip, during the collision, has a change in momentum:
Δp = m · (v₂ - v₁)

The final speed is equal to zero, since it sticks to the spacecraft, therefore:
Δp = m · v
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= 4.8×10⁻⁴ kg·m/s
where we transformed the mass into the proper units of measurement (kg).

This change in momentum is equal to the impulse J:
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We can solve for F
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3 years ago

A plant was placed in the corner of a room away from a window. What might you observe about the plant after five days?

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Answer:

4 the plant is leaning towards the window

Explanation:

that is due to the plant inhabit to grow towards the sunlight so the plants tries its best to get the sunlight by doing so and growing

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3 years ago

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CaHeK987 [17]

Explanation:

What is the weight of a 2.00-kilogram object on the surface of Earth?

2.00 N

4.91 N

9.81 N

19.6 N

Given parameters:

Mass of the object = 2kg

Unknown:

Weight of the object = ?

Solution:

The weight of an object is the force of gravity acting on the object;

Weight = mass x acceleration due to gravity

Acceleration due to gravity = 9.8m/s²

Now insert the parameters and solve;

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A person weighing 785 Newtons on the surface of the Earth would weigh 47 Newtons on the surface of Pluto. What is the magnitude of the gravitational acceleration on the surface of Pluto?

1.7 m/s²

0.59 m/s²

0.29 m/s²

9.8 m/s²

Given parameters:

Weight on Earth = 785N

Weight on Pluto = 47N

Unknown:

Acceleration due to gravity on Pluto = ?

Solution

The mass of the body both on Earth and Pluto is the same.

Weight = mass x acceleration due to gravity

Now find the mass on Earth;

Acceleration due to gravity on Earth = 9.8m/s²

785 = mass x 9.8

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3 years ago

A common physics demonstration is to drop a small magnet down a long, vertical aluminum pipe. Describe the motion of the magnet

Rzqust [24]

Answer and Explanation:

This experiment is known as Lenz's tube.

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