Answer:
Polyatomic - Yes, (NH4)2CO3 contains polyatomic ions.
Metalloid - No, (NH4)2CO3 does not contain any metalloids.
Acid - No, (NH4)2CO3 is a salt, not an acid.
High Melting Point - No, (NH4)2CO3 has a relatively low melting point of around 58 °C.
Soluble in Water - Yes, (NH4)2CO3 is soluble in water.
Contain Anions and Cations - Yes, (NH4)2CO3 contains both anions (CO3^2-) and cations (NH4+).
Multivalent - No, (NH4)2CO3 does not contain any multivalent ions.
Therefore, the properties that apply to (NH4)2CO3 are 1, 5, and 6. The numerical response in ascending order is: 1, 5, 6.
Step-by-step explanation: