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Nadusha1986 [10]
3 years ago
8

Explain how scientific observations led to the development of, and changes to, the periodic table.

Chemistry
1 answer:
Vesna [10]3 years ago
7 0
By the observations made by scientists on the properties of the elements that is found in the periodic table, these elements are arranged accordingly depending on their properties. The rows are called as the periods while columns are known as groups. In the case of the size of the atom, they are arranged in a way that from left to right across a period the atomic radius increases as well as going down a group. For reactivity, it increases from left to right and up to down. Also, the elements are arranged with respect to increasing atomic number. It is Dmitri Mendeleev that is one of the chemist  who arranged the periodic table which has been used up to till now.
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How do you convert volume to moles at STP?
Vanyuwa [196]

The conversion of volume to moles at STP is 1 mole.

The ideal gas equation is given as :

P V = n R T

where,

P = pressure of the gas

V = volume of the gas

n = ?

R = constant = 0.823 atm L / mol K

T = temperature

At STP , the pressure is 1 atm and the temperature is 273.15 K, the volume At STP is 22.4 L.

moles , n = P V / R T

n = ( 1 × 22.4 ) / (0.0823 × 273.15)

n = 1 mole

Thus, at STP , the number of moles is 1 mol.

To learn more about moles here

brainly.com/question/8429153

#SPJ4

6 0
1 year ago
How many moles are in 54.0 grams of Silver?
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3 years ago
What does a useful scientific explanation include ??
ArbitrLikvidat [17]

Answer: scientific explanation

Explanation:

A really good scientific explanation should do two main things: It should explain all the observations and data we have. It should allow us to make testable predictions that we can check using future experiments.

7 0
3 years ago
How are protons, electrons, and neutrons correctly compared​
Fiesta28 [93]

they all have one thing in common and that its all made up of atoms. When these components are active it creates energy  

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What is the difference between polar and non-polar
ExtremeBDS [4]

Answer:

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Explanation:

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5 0
2 years ago
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