Answer:
It's determined by the ability of one mineral to scratch another mineral.
you can't solve that, you need more information in that equations like and x or an y.
Otherwise, the equation stays like that.
Properties of elements usually repeated at regular intervals when the elements were arranged in order of increasing Atomic mass.
The properties of elements are a periodic function of their atomic masses. Mendeleev found that when elements are arranged in the order of increasing atomic mass ,the elements with similar properties occur at regular intervals. Mendeleev's periodic table means that if elements are arranged in the order of increasing atomic masses then the properties of elements are repeated after regular intervals or period. He arranged 63 elements in the order of increasing atomic masses in horizontal row but in such a way that elements having similar properties came directly under one another in the same vertical columns or groups.
To learn more about Mendeleev's Periodic table please visit:
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<em></em>hydrogen #1 carbon #6 nitrogen #7 oxygen #8 Phosphorus #15 Sulfur #16 Selenium #34
Answer:
Mass = 32 g
Explanation:
Given data:
Number of moles of oxygen = 1.0 mol
Mass of oxygen = ?
Solution:
Formula:
Number of moles = mass/molar mass
Molar mass of oxygen (O₂) is 32 g/mol
by putting values,
1.0 mol = mass/ 32 g/mol
Mass = 1.0 mol ×32 g/mol
Mass = 32 g
