It tells you how much of one atom you have.
Hey! In order to answer this question, we need to understand the difference between mass and density. Mass is the property of matter that measures its resistance to its acceleration, while density is the measure of mass per volume.
Mass is independent as it just focuses on how heavy an object is while density isn't. It can be represented by this equation.
Density = Mass/Volume
If the iron block has more mass per volume than the gold. Then you can consider that the iron has a higher density than gold. However, only if both have the same amount of volume. If there is less or more, then it can fluctuate.
Answer:
2.5 M NaOH
Explanation:
The solution with the highest molarity is the most concentrated one.
Molarity is the number of moles per unit volume of a solution.
- Molarity =
2.5M implies there are 2 mole of NaOH per solution of this given substance.
This is the highest from the list as other ones falls below it.
The lowest concentration is 0.2M because just 0.2 mole of NaOH is contained per unit volume.
Answer:
Energy is needed to break the bonds of H-H in H2 and Cl-Cl in Cl2
Energy is released when the H-Cl bonds form.
Explanation:
During a chemical reaction, energy is needed to break the bonds between reactants in order for reactants to recombine with each other to form products.
According to the collision theory, chemical reactions occur when reactant particles of appropriate activation energy collide with each other to form the products. This implies that energy must be absorbed in order to break Cl-Cl and H-H bonds in the reactants so that they can collide to form HCl. As the new bond is formed in the product, the excess energy absorbed by the reactants is given off.