Answer:
<h3>The answer is 7.47 g/cm³</h3>
Explanation:
The density of a substance can be found by using the formula
From the question
mass = 53.137 g
volume = 7.11 cm³
We have
We have the final answer as
<h3>7.47 g/cm³</h3>
Hope this helps you
Answer:
It would be 5.8 times 10^9cm
Answer:
4.9 × 10²³ molecules
Explanation:
Given data:
Number of molecules = ?
Number of moles of oxygen = 0.815 mol
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number.
1 mole = 6.022 × 10²³ molecules
0.815 mol × 6.022 × 10²³ molecules / 1 mol
4.9 × 10²³ molecules
Elements that make up the compounds that are characterized as covalent are mostly in the right part of the periodic table.
Alkalyne metals and alkalyne earth metals, which are located in the left part of the table, and given that those elements form ions with relative ease they make up ioinic compounds.
Covalent compounds are made up mainly of a non metal element and a metal elements with low metallic properties.
The metallic character of the elements decrease as you go to the right of the periodic table, that is why you found those elements in the right part of the periodic talbe.