Use the equation to answer the question
2H + 2H = 4H
1. 1. 2
Which statement best describes the mass numbers of the atoms in the reaction
There is one atom with a mass number of one
There is one atom with a mass number of two
There are two atoms with mass numbers of two
There are two atoms with mass numbers of one
There are two atoms with mass numbers of one.
The correct statement is: There are two atoms with mass numbers of two.
In the equation 2H + 2H = 4H, the representation "2H" means two hydrogen atoms. Hydrogen has a mass number of one. So, in total, there are two hydrogen atoms, each with a mass number of one. When they combine, the equation results in 4H, representing two hydrogen atoms that have combined to form a molecule with a mass number of two.
To answer this question, we need to understand the concept of mass numbers and how they relate to atoms. The mass number of an atom refers to the total number of protons and neutrons in its nucleus.
In the given equation, 2H + 2H = 4H, we see that the reactants (2H) are hydrogen atoms and the product (4H) is also a hydrogen atom. The subscripts represent the number of atoms present in the equation.
So, we can conclude that there are two atoms of hydrogen being added together (2H). This means that the statement "There are two atoms with mass numbers of one" is the correct answer.
To arrive at this answer, we simply count the number of atoms (2) and note that the mass number of hydrogen is one.