Precipitation reaction and double displacement reaction
Answer:
A. The number of atoms of each element is the same on the reactant side as the product side.
Explanation:
The equation demonstrates the law of conservation of mass in such a way that the number of atoms of each element is the same on the reactant side as the product side.
According to the law of conservation of mass "matter is neither created nor destroyed in a chemical reaction but they are changed from one form to another".
- By virtue of this, the number of moles of atoms on both sides of the expression must be the same.
Answer:
Protons, Neutrons, and Electrons are all in atoms so the one not present would be the Element since Elements are made of atoms.
Explanation:
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.
A. time/mass b. number/time c. energy/time d. time/energy