Answer:
false
Explanation:
not all science is good, or has good effects
I believe the correct response would be A. Energy being absorbed, as temperature increase must for instance occur for the reaction to occur, this increase in temperature for the reacting substances indicates energy being absorbed as the reaction proceeds.
Answer:
False
Explanation:
According to kinetic molecular theory, all collisions are perfectly elastic and energy is conserved.
Because it has fixed boiling point up to 100 C
Answer:
A) CaCO₃
C) No precipitate
Explanation:
To answer these questions we need to consider the solubility rules.
<em>Identify the precipitate or lack thereof for the following:</em>
CaCl₂(aq) + K₂CO₃(aq) ⇒ CaCO₃(s) + 2 KCl(aq)
- Group II carbonates are insoluble. Thus, CaCO₃ is insoluble.
- Salts containing Group I cations are soluble. Thus, KCl is soluble.
FeCl₂(aq) + (NH₄)₂SO₄(aq) ⇒ FeSO₄(aq) + 2 NH₄Cl(aq)
- Most sulfates are soluble. Thus, FeSO₄ is soluble.
- Salts containing the ammonium ion are soluble. Thus, NH₄Cl is soluble.