B) Tellurium is a metalloid. Metalloids in some classifications are also or alternatively called “semi-metals.”
It should remain constant because of the law of conservation of mass and because the flask is sealed no mass will escape
Answer:
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Explanation:
Silicon is the element having a mass of 28.09 g
<u>Explanation</u>:
- Silicon is the element having an atomic mass of 28.09 g / mol. So 28.09 g of silicon contains 6.023
10^23 atoms. One mole of each element can produce one mole of compound.
- The Atomic weight of an element can be determined by the number of protons and neutrons present in one atom of that element. So atomic weight expressed in grams always contain the same number of atoms( 6.023
10^23).
- Avagadro number is the number of atoms of 1 mole of any gas at standard temperature and pressure. It has been determined that 6.023
10^23 atoms of an element are equal to the average atomic mass of that element.