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Dvinal [7]
2 years ago
8

The basic principles of atomic theory were first conceived by:

Chemistry
1 answer:
Natasha2012 [34]2 years ago
7 0

The ancient atomic theory was proposed in the 5th century bc by the Greek philosophers Leucippus and Democritus and was revived in the 1st century bc by the Roman philosopher and poet Lucretius.

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What is the coefficient in this chemical formula? 3C6H12O6
erma4kov [3.2K]

Answer:

C-3

Explanation:

7 0
2 years ago
Read 2 more answers
How many miles are there in 20g of KClO3 (k=39 Cl=35.5 O=16)​
SashulF [63]
<h3>Answer:</h3>

0.144 moles

<h3>Explanation:</h3>
  • The relationship between mass of a compound, number of moles and molar mass of the compound is given by;
  • Number of moles = Mass ÷ Molar mass
  • Molar mass is equivalent to the relative formula mass of the compound that is calculated the atomic masses of the elements making the compound.

In this case;

Our compound, KClO3 will have a molar mass of;

= 39 + 35.5 + 4(16)

= 138.5 g/mol

Mass of KClO3 is 20 g

Therefore;

Number of moles = 20 g ÷ 138.5 g/mol

                            = 0.144 moles

Thus, the number of moles in 20 g of KClO3 is 0.144 moles

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3 years ago
Why do health care professionals limit the number of radiation treatments that a person can be given
katovenus [111]
Radiation is s very powerful substance and can cause major health problems do the health care professionals limit the use to help not create sickness
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3 years ago
which of the following is an example of an electromagnetic wave A. an ocean wave B. A sound wave C. A light wave D. A wave trave
ruslelena [56]

Answer:

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Explanation:

It isn't sound because it isn't infrared, involve electromagneticism, or light/radiation. An ocean wave is a literal wave of water, and a wave traveling along a rope is way off course. Choose a light wave. Also, brainliest would be nice. Glad to help

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2 years ago
What type of mountain are the andes mountains
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