The correct answer is, tobacco.
Answer:
,
Explanation:
pH is defined as the negative logarithm of the concentration of hydrogen ions.
Thus,
pH = - log [H⁺]
Strong acids dissociate completely and thus, 0.5 M of a solution of a strong acid yields a pH of 1.0 .
The expression of the pH of the calculation of weak acid is:-
Where, C is the concentration = 0.5 M
Given, pH = 4.0
So, for ,
pH = 4.0
<u>Hence, the acid is HOCl.</u>
Answer: since water is denser than the ice, the ice, floats to the top
Explanation:
Answer:
The Symbols of elements is given by :
IUPAC : International Union Of Pure and Applied Chemistry .
Its is the Universally recognuised organisation which works on Chemical nomenclature and terminology.
Explanation:
According to IUPAC the elements are named according to mythological concept of country ,mineral , place , property and scientist.
Ex:Copper name comes from the old english word Cyprus.
Rules of Naming elements :
1. The first Alphabet of the element is always Capital.Example:-
Sodium : Na not ''na'
2. The second alphabet is always small .Example
Sodium : Na not ''nA' or NA
3.For most of the elements ,The symbol of the element comes from the <u>first two words.</u>
Example : Hydrogen : H
Helium : He
Copper : Cu
Rules for naming elements having mass> 100
1. The names are derived directly from the atomic number .
Ex : 0 = nil 1= un 2=bi 3=tri
2. The name always ends with ''ium''
For example :
102 = Unnilbium
Answer:
Due to drought in Florida, people were informed to minimize the use of water and certain rules were made regarding water usage.
Explanation:
A drought is a shortage in the water supply. The drought in Florida led to water restriction as it was a way to prevent the shortage of water in the long run. Florida experienced a drought and water restriction was used as a way to curtail further shortage of water.
New rules were made to prevent wastage of water such as limiting lawn watering to one day in a week, limiting of car washing, and homeowners were not allowed to do things that can lead to an increase in water usage.