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Bess [88]
2 years ago
9

A piece of gold (density 19.3 g/mL) has a mass of 3.85 g. What is its volume?

Chemistry
1 answer:
vaieri [72.5K]2 years ago
7 0

Answer:

about 0.2 mL

Explanation:

To find the volume, you take the mass and divide it by the density

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mr_godi [17]
They are the same as animals ability to find food and get away from others.
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Elements that share properties of both metals and nonmetals?
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I can help with that!
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Vera_Pavlovna [14]

Answer:

Energy is transferred from one object to another when a reaction takes place.

Explanation:

Energy comes in many forms and can be transferred from one object to another as heat, light, or motion, to name a few.  

The answer could be It is a well known fact that energy can neither be created and nor be destroyed but can be transformed from one form to another.

Now talking about your example in a typical light bulb electrical energy is converted into light energy and heat energy. Now when the electric current flows through the conductor/filament in the light bulb,this would cause vibrations and the free ions are more likely to go to an higher energy level,and when the ions come back to their original state,the difference in the two energy levels is usually emitted as a photon,thus light energy is obtained and the heat energy is the energy dissipated as a result of flow of electricity through the conductor.

Anything that gets transformed into light energy or in better words ElectroMagnetic Energy would be a result of this.

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3 years ago
What activates a convection current, starting the flow of a fluid ??
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Hey there!

<span>What activates a convection current, starting the flow of a fluid ?

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6 0
2 years ago
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After completing an experiment to determine gravimetrically the percentage of water in a hydrate, a student reported a value of
SIZIF [17.4K]

Answer:

b) The dehydrated sample absorbed moisture after heating

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This will result in a higher percent of water than the real one, because you assume in the calculation that the splattered sample was only water (which in not true).

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Usually inorganic salts may absorbed moisture from the atmosphere so this will explain the 13% difference between calculated water percent the real content of water in the hydrate.

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It will create some errors but they do not create a difference of 13% difference as stated in the problem.

d) The crucible was not heated to constant mass before use.

Here the error is small.

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Usually the inorganic compounds are stable in the temperature range of this kind of experiments. If you have an organic compound which retain water molecules you may decompose the sample forming volatile compounds which will leave crucible so the error will be quite high.

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