1) moles = mass/mR
CaCO3 Mr = 40 + 12 + (16×3)
= 52 + 48
= 100
mass = 15
so the moles would be 15 ÷ 100
which is 0.15 moles of CaCO3
2) moles = mass ÷ Mr
Mr of Al2O3 = 27 + (16×3)
= 27 + 48
= 75
mass = 204
so the moles would be 204/75 which is 2.72 moles of Al2O3
The periodic table is known to consist of different elements. According to the chart, the element is lithium with an atomic number of 3.
- Lithium is known too be the third element on the periodic table after hydrogen and helium.
This element is mostly used in the production of rechargeable batteries for mobile phones, laptops, etc. and it is also used non-rechargeable batteries for production of heart pacemakers, toys, etc.
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Meiosis 1 makes 2 Haploid cells from one Diploid cell. Meiosis 2 separates the sister chromatids in the haploid cell in order to make 4 daughter cells.
Chemical potential energy
Answer: Ionic bonding is a type of chemical bonding that involves the electrostatic attraction between oppositely charged ions, or between two atoms with sharply different electronegativities, and is the primary interaction occurring in ionic compounds.
Explanation: