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.
<span>The addition of water affect the acidity of a highly acidic solution having pH 2 by increasing the pH level making it more neutral. This is because the concentration of the hydronium ions decreases as more water is added to the solution.</span>
Aye you have the same class as me bruh I need help on some chemistry qustions
Answer:
The rates of decay of radioactive elements
Explanation:
The age of a rock in years is called its absolute age. Geologists find absolute ages by measuring the amount of certain radioactive elements in the rock. When rocks are formed, small amounts of radioactive elements usually get included.
