What are the different chemical properties of the element Cobalt?

It is a hard ferromagnetic, silver-white, lustrous, brittle element.

It is stable in air and does not react with water.

Like other metals, it can also be magnetized.

With dilute acids, it reacts slowly.

The metal melts at 1495 °C and boils at 2927 °C

Explanation:

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i think the answer is terrae but not 100 percent sure. ▓▬▬ §

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.