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Mekhanik [1.2K]
3 years ago
15

Alchemists were able to _____. A. study the properties of common elements B. study the properties of compounds C. develop labora

tory techniques used by later scientists D. all of the above.
Chemistry
2 answers:
Dvinal [7]3 years ago
7 0

The correct option is D.

Alchemists are early chemical scientists, who first delved into the subject of chemistry. These early scientists were able to study the characteristics of common elements, the features of compounds and some of the laboratory methods that they developed then were found useful by later scientists. One thing that alchemists are known for is their quest to turn lead into gold.

Maurinko [17]3 years ago
3 0
I think the correct answer from the choices listed above is option D. Alchemists were able to study the properties of common elements, properties of compounds and develop laboratory techniques used bylater scientists.
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What is the frequency of radiation whose wavelength is 2.25 X 10^-5cm?
Semenov [28]

Answer:

1.25 x 10^15Hz

Explanation:

c = frequency x wavelength

c is the speed of light, which is equal to 3.00 x 10^8 m / s

frequency = c /wavelength

= (3.00 x 10^8m /s) / (2.40 x 10^-5 cm x 1 m /100cm)

= (3.00 x 10^8 m/s) / 2.40 x 10^-7m

= 1.25 x 10^15/s 1 / s = 1Hz

So, the Frequency = 1.25 x 10^15Hz

I hope this helped :)

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Which planet listed below will take the longest amount of time to orbit the sun?
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Answer:

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3 years ago
Why is helium found in deposits of uranium and thorium vores? What kind of radioactive emission produces it?
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Two protons and two neutrons are emitted and trapped as materials like uranium and thorium deep underground decay into radium and thorium, respectively. These alpha-particles transform into stable helium atoms as they take on electrons from their surroundings.

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Alpha decay usually occurs in heavy nuclei such as uranium or plutonium, and therefore is a major part of the radioactive fallout from a nuclear explosion.

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Alpha decay occurs most often in massive nuclei that have too large a proton to neutron ratio. An alpha particle, with its two protons and two neutrons, is a very stable configuration of particles.

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Which describes the composition of carbohydrates?
UkoKoshka [18]

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3 years ago
What is the kinetic energy of a 2,000-kilogram ball that is on the ground
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