The correct answer is 226Ra is half and long as radioactive decay
Answer:
We will need two potassium ions to balance the charge on the sulfate ion, so the proper chemical formula is K 2SO 4.
Explanation:
hope this helps
Answer:
a. acid
Explanation:
- The neutralization of a base requires the addition of acid.
- Hydroxide ions of the base are neutralized using hydrogen ions of an acid.
- Acid-base neutralization results in the formation of water and salt.
For example: NaOH is neutralized by HCl as:
<em>NaOH + HCl → NaCl + H₂O.</em>
Answer:
Exothermic reaction
Explanation:
The freezing of n-octane is an exothermic reaction.
An exothermic reaction is a type of reaction in which energy usually in the form of heat is released to the environment. In an exothermic reaction, the reactants are at a higher energy level compared to the product. Hence heat energy is usually released.
Now, freezing is a change in state from the liquid state to the solid state , for example, the turning of water to ice block.
In freezing, energy is released and hence, thus it is an exothermic reaction
The textbook Would most likely have more gravitational potential energy because it is heavier. Things that are heavier have a larger gravitational pull and are pulled to the earth faster