Answer:
35.75 days
Explanation:
From the given information:
For first-order kinetics, the rate law can be expressed as:
Given that:
the rate degradation constant = 0.12 / day
current concentration C = 0.05 mg/L
initial concentration C₀ = 3.65 mg/L
㏑(0.01369863014) = -(0.12) t
-4.29 = -(0.12)
t = -4.29/-0.12
t = 35.75 days
The two properties which are used to define matter are that it has mass
and it takes up space. The other properties do not necessarily apply to
each matter. Such some matter can be a conductor of heat (such as metal)
and some not (such as non metals). Likewise, some matter can be buoyant
and float on liquid of density more than it but others would not on the
liquids of density less than it. In-fact not all the matters are
conductors of energy (such as heat, sound, electricity) or at-least a
very poor conductor of energy and tend to find application as
insulating agents (non conductors). So the only thing which is
necessarily true is that the matter would definitely have mass in even
their minutest form as atom and would take up some space.
There are 6 neutrons in an atom of Boron
Water, or H2O, is a compound composed of the elements hydrogen (H) and oxygen (O).
Answer:
Where it is on the periodic table
Explanation:
The periodic table is a table that provides a systematic pattern for arranging elements.
The table is based on the periodic law. The modern version of the periodic law states that " the properties of elements are periodic function of their atomic number".
In the modern periodic table, elements having the same number of electrons in their outermost shell are placed over one another in a vertical column.
Elements in the same group exhibits similar chemical properties because of the same number of electrons in their outermost shell. Physical properties also varies progressively down any group.
So, the position of an element on the periodic table determines its properties.
