Answer: The athlete will have same mechanical energy at the bottom of the hill.
Explanation:
Mechanical energy is defined as the sum of the potential energy and kinetic energy that is used to do work. Mechanical energy of an object cannot be created nor be destroyed. It can be transformed from one form to another.
M.E= P.E+K.E
The mechanical of the energy of an athlete on skate board on the top of the hill was 'X' joules.
When she reached the bottom of the hill, the mechanical energy of her remained constant. During this process the potential energy from the initial point got transformed into the kinetic energy at final point by which the mechanical energy remained constant.
In chemistry, the letter "H<span>" represents the enthalpy of a system. Enthalpy refers to the sum of the internal energy of a system plus the product of the system's pressure and volume. The delta symbol is used to represent change. Therefore, delta </span>H<span>represents the change in enthalpy of a system in a reaction. hope that helps</span>
A calculator .... that's the answer
Answer is 128.892 g.
moles (mol) = mass (g) / molar mass (g/mol)
According to the given data,
moles = 4.60 mol
mass = ?
molar mass = 28.02 g/mol
By substitution,
4.60 mol = mass / (28.02 g/mol)
mass = 4.60 mol x 28.02 g/mol
mass = 128.892 g
Hence, mass of 4.60 mol of N₂ is 128.892 g.
They become a piece of matter