C) gas particles move rapidly but they collide with each other as well as on the wall of the container
Answer:
i can't see the image so sorry
Explanation:
i couldnt see the imagee
Explanation:
A period 4 element is one of the chemical elements in the fourth row (or period) of the periodic table of the elements.
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Period 4 element.
Hydrogen Rubidium
Strontium
Yttrium
Zirconium
Niobium
Answer:
strength and vitality required for sustained physical or mental activity
Explanation:
Answer:
<span>The mole concept is important in chemistry because, "</span>Atoms and molecules are very small and the mole concept allows us to count atoms and molecules by weighing macroscopic amounts of material".
Explanation:
To understand this question lets take an example of Hydrogen atom. Let suppose you need to react Hydrogen with Oxygen. You need exactly Two Hydrogen atoms and one Oxygen atom to form one water molecule.
The mass of 1 hydrogen atom is 1.76 × 10⁻²⁴ grams. How will you count the Hydrogen atoms??? How can you measure exactly for 1 Million Hydrogen Atoms???
Answer to these questions and Calculations lies in Mole. It is found that 1 Mole of Hydrogen weights exactly 1.008 gram and contains 6.022 × 10²³ atoms. Now, having this reference in hand you can calculate for any number of Hydrogen atoms.
Result:
So the Mole helps us to zoom a microscopic level to a macroscopic level. :)
