This balanced chemical equation shows that 1 mole of magnesium reacts with 2 moles of hydrochloric acid to form 1 mole of magnesium chloride and 1 mole of hydrogen.

This is a colorless streak that occurs when urine dries on the test strip. Disregard this evap line if it appears; it doesn't mean you're pregnant. The evaporation line can appear for a number of ...