Silicon-32's half-life is actually 710 years.
Answer:
Molar mass of K₃PO₄ = 212.27 g/m
Explanation:
K₃PO₄ (Potassium phosphate)
This is a ionic salt compounded of phosphate and potassium
Mass of potassium = 39.10 g/m
Mass of phosphorus = 30.97 g/m
Mass of oxygen = 16 g/m
Molar mass of K₃PO₄ = 39.10 x3 + 30.97 + 16 x4 = 212.27 g/m
If it's your first encounter with chemistry, your instructor will want you to learn how to use the periodic table<span> to find the atomic mass (</span>atomic weight<span>) of an element. This number usually is given below an element's symbol. Look for the decimal number, which is a </span>weighted average of the atomic masses<span> of all the </span>natural isotopes<span> of an element. </span>
Answer:
Rock
Explanation:
Rock -
It refers to the naturally occuring mass of mineral , with a uniform chemical composition , is referred to as a rock .
In the crust of the Earth , the composition is by the igneous rocks .
<u>There are three main type of rocks , i.e. , </u>
- sedimentary rocks ,
- metamorphic rocks ,
- igneous rocks .
Hence , from the given information of the question ,
The correct term is rock.
Answer:
As any molecular or ionic compound, 0 net charge, as a hypothetical diatomic cation, 2+
Explanation:
The question states that this is a compound, and any molecular or ionic compound would have a net charge of 0.
However, such a compound doesn't exist. Francium generally exists in nature having a 1+ charge in its cation form. Combining two francium ions would result in a 
species which is simply a diatomic ion but not a compound.
