Answer: Molecular formula
Explanation:
Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound.
Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.
Ionic formula is the simplest chemical formula which depicts the whole number of atoms of each element present in an ionic compound.
Molecular formula of hydrogen peroxide is 
. Empirical formula of hydrogen peroxide is OH.
Answer:There are, however, other forms of empirical evidence that support the theory of evolution. The fossil record, anatomical and embryological homologous, and genetic similarities are also used to support the theory of evolution. Many pieces of evidence support the theory that birds and dinosaurs are related.
Explanation:hope i am helpful
Explanation:
The three sub atomic particles are;
Neutrons, Electrons and Protons
Hydrogen - H
Neutrons: 0
Electrons: 1
Protons: 1
Deuterium - D
Neutrons: 1
Electrons: 1
Protons: 1
Tritium - T
Neutrons: 2
Electrons: 1
Protons: 1
Answer: A) grinding coffee beans
Explanation:
A physical change is defined as a change in which there is alteration in shape, size etc. No new substance gets formed in these reactions.
A chemical change is defined as a change in which a change in chemical composition takes place. A new substance is formed in these reactions.
1. Grinding coffee : Only change in size takes place, thus a physical change
2. Baking a cake: the chemical reaction occurs by combination of flour with oxygen , thus a chemical change.
3.:converting water to hydrogen and oxygen: The decomposition iof water takes place, thus is a chemical change
4.Burning of coal: the chemical reaction occurs by combination of carbon with oxygen , thus a chemical change.
The correct one is Respiratory Distress !!
As rest are not concerned with air pollution !!
