Question

there is a reaction between magnesium sulfate and sodium carbonate. what color is the solid produced? yellow white red black

Explanation:

When magnesium sulfate ($MgSO_4$) reacts with sodium carbonate ($Na_2CO_3$), a double - displacement reaction occurs. The chemical equation is $MgSO_4 + Na_2CO_3=MgCO_3\downarrow+Na_2SO_4$. Magnesium carbonate ($MgCO_3$) is a white solid.

Answer:

White