<h2>Project Reports</h2>
<h3>A) Mixture</h3>
This refers to the material that is made when different substances mix up physically and causes a reaction.
You can make on the project of Mixture -
- 1) Alloys
- 2)Colloids
- 3) Suspension
- 4) Solution
<h3>B) Compound</h3>
This refers to the chemical bond that holds different atoms tightly
You can make on the project of Compound -
- 1)Water
- 2)Methane
- 3)Carbon Dioxide
- 4) Sulfuric Acid
<h3>C) Elements</h3>
Based on the fact that the atom is the smallest indivisible part of an element, elements like phosphorous cannot be further broken down.
You can make on the project of Elements -
- 1) Mercury
- 2) Iron
- 3) Copper
- 4)Carbon
Read more about mixtures and compounds here:
brainly.com/question/491220
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X equals <span>2.76923076923</span>
Sodium- Na
most active element- Fluorine
lightest element- Hydrogen
Answer:
The correct answer is option c.
Explanation:
Formula used to determine an average atomic mass :

Mass of isotope Sb-121 = 120.904 amu
Fractional abundance of Sb-121 = 57.21% = 0.5721
Mass of isotope Sb-123 = 122.904 amu
Fractional abundance of Sb-123 = 42.79% = 0.4279
Average atomic mass of Sb:
