This question is about sea water and the substances found in sea water. Sea water contains dissolved gases. Name the gas that is essential for aquatic life. .........................................................................................................................................

Chemistry

IGCSE&ALevel

CAIE

Exam No：0620_s25_qp_31 Year：2025 Question No：2(f)

Answer:

10.1.1. Describe chemical tests for the presence of water using anhydrous cobalt(II) chloride and anhydrous copper(II) sulfate

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