<span>it must be a compound of a polyatomic cation (i think ammonium might be the only</span>
You know if it's endothermic or exothermic by doing the enthalpy reaction. If the change of temperature is negative then it is exothermic, while positive is endothermic.
If you get -22K then its exothermic, but if you get +22 its endothermic.
Answer:
<h3>Na2O + H2O → 2NaOH</h3>
<h3>explanation:</h3>
Sodium oxide react with water to produce sodium hydroxide.
Answer:
A process known as Subduction
Explanation:
In the event that two tectonic plates collide, they structure a convergent plate boundary. Typically, one of the converging plates will move underneath the other, a procedure known as subduction. Profound trenched are included frequently where tectonic plates are being subducted and earthquakes are normal. As the sinking plate moves further into the mantle, fluids are discharged from the rock making the overlying mantle to somewhat melt. The new magma ascents and may emit fiercely to frame volcanoes, regularly forming curves of islands along the convergent boundary.
