Question

what does it mean when a compound (or element or alloy) appear above the arrow in a balanced chemical equation?
the compound is a catalyst.
the compound is a gas.
the compound is dissolved in water.
the reaction was maintained at the given temperature.
the compound is a liquid.
heat was applied to the chemical reaction.
the compound is a solid.
question 2
1 pts
balance the following equation (use the number 1 when needed - dont leave it blank):
ca(no3)2 (aq) + (nh4)3po4 (aq) →
ca3(po4)2 (s) + nh4no3 (aq)

Explanation:

In a balanced chemical equation, when a compound (or element or alloy) appears above the arrow, it indicates that the compound is a catalyst. A catalyst is a substance that speeds up a chemical reaction without being consumed in the reaction.

Answer:

The compound is a catalyst.