Answer:More of the radioactivity is lost during the first half-life than in later half-lives.
Explanation: Passed test with 98
The mass of this 82.5 pounds
Answer:
B
Explanation:
Neutralization reaction is where you add equal moles or quantity of acid and base so that they both neutralize each other or "cancel" each other making the pH to be neutral which is 7. Group B is likely wrong as their pH is 5 which means they added too much acid, if they had equal acid and base their pH would be 7 however since they added more acid, there was still some acid left after the initial neutralization and this acid decreased the pH to 5.
Answer:
d. 6
Explanation:
Sodium chloride crystals have a<em> face-centered cubic structure</em>. This means that each of the atoms in the crystal is surrounded by other 6 atoms.
In the particular case of sodium chloride, the sodium cations are always surrounded by the oppositely-charged anions of chloride.
Answer: B= Rusting ability
Explanation:
Physical property is defined as the property which can be measured and whose value describes the state of physical system. For Example: State, density etc.
Chemical property is defined as the property of a substance which is observed during a reaction where the chemical composition identity of the substance gets changed.
1. Boiling point: is a physical property as there is a change of state.
2. Rusting ability: is a chemical property as there is formation of new substances.
3. Melting point: is a physical property as there is a change of state.
4. Density: is a physical property as there is no formation of new substances.